Ossila T2003 User manual

Manual version: 3.0.F
Product code: T2002/T2003
Product Version: 3.0
Software version: 2.2

Solar Cell I-V Test System User Manual
www.ossila.com 2 Ossila Limited © 2023
Contents
1. Overview .......................................................................................................................................................3
2. EU Declaration of Conformity (DoC)...........................................................................................................4
3. Safety.............................................................................................................................................................7
3.1 Use of Equipment.......................................................................................................................................................... 7
3.2 Hazard Icons .................................................................................................................................................................. 7
3.3 General Hazards ............................................................................................................................................................ 7
3.4 Power Cord Safety......................................................................................................................................................... 8
3.5 Servicing ......................................................................................................................................................................... 8
3.6 Health and Safety –Servicing....................................................................................................................................... 8
4. Requirements...............................................................................................................................................9
5. Unpacking.....................................................................................................................................................9
5.1 Packing List..................................................................................................................................................................... 9
5.2 Damage Inspection........................................................................................................................................................ 9
6. Specifications..............................................................................................................................................10
7. System Components..................................................................................................................................11
8. Installation..................................................................................................................................................12
9. Operation....................................................................................................................................................12
9.1 Measurement Types.................................................................................................................................................... 12
9.2 Quick Start Guide......................................................................................................................................................... 14
9.3 Shared Software Settings............................................................................................................................................ 15
9.4 Characterisation Settings............................................................................................................................................ 17
9.5 Lifetime Settings .......................................................................................................................................................... 18
9.6 Stabilised Current Settings ......................................................................................................................................... 20
9.7 Saving and Loading Settings....................................................................................................................................... 22
9.8 Saving Results .............................................................................................................................................................. 22
9.9 Controls ........................................................................................................................................................................ 24
9.10 Plot Controls................................................................................................................................................................. 25
10. Test Devices................................................................................................................................................26
10.1 Taking a Measurement ............................................................................................................................................... 26
11. Troubleshooting.........................................................................................................................................29
11.1 Installation and Setup ................................................................................................................................................. 29
11.2 Error Messages and Warnings ................................................................................................................................... 30
12. Related Products........................................................................................................................................31
12.1 Related Consumables ................................................................................................................................................. 31
12.2 Related Equipment...................................................................................................................................................... 31

Solar Cell I-V Test System User Manual
www.ossila.com 3 Ossila Limited © 2023
1. Overview
The Ossila Solar Cell I-V Test System is a low-cost solution for reliable current-voltage
characterisation of solar cells. The system is controlled by specially designed software which can
perform multiple I-V measurements, determine key metrics of solar cells, and measure these
properties over long periods of time. The automated version of the system enables automatic
switching between pixels, making measurements faster and easier.

Solar Cell I-V Test System User Manual
www.ossila.com 4 Ossila Limited © 2023
2. EU Declaration of Conformity (DoC)
We
Company Name: Ossila BV
Postal Address: Biopartner 3 building, Galileiweg 8
Postcode: 2333 BD Leiden
Country: The Netherlands
Telephone number: [phone]
Email Address: [e-mail]
declare that the DoC is issued under our sole responsibility and
belongs to the following product:
Product: Solar Cell I-V Test System –Manual
(T2002A2/T2002B2/T2002D2/T2002E2/T2002F2/T2002G2), Cell I-V Test System –Automated
(T2003A3/T2003B3/T2003C3/T2003E3/T2003F3/T2003G3)
Serial number: T2002A2-xxxx, T2002B2-xxxx, T2002D2-xxxx, T2002E2-xxxx, T2002F2-xxxx,
T2003A3-xxxx, T2003B3-xxxx, T2003C3-xxxx, T2003E3-xxxx, T2003F3-xxxx, T2003G3.
Object of declaration:
Solar Cell I-V Test System –Manual (T2002A2/T2002B2/T2002D2/T2002E2/T2002F2/T2002G2)
Solar Cell I-V Test System –Automated (T2003A3/T2003B3/T2003C3/T2003E3/T2003F3/T2003G3)
The object of declaration described above is in conformity with the
relevant Union harmonisation legislation:
EMC Directive 2014/30/EU
RoHS Directive 2011/65/EU
Signed:
Name: Dr James Kingsley
Place: Leiden
Date: 16/11/2021

Solar Cell I-V Test System User Manual
www.ossila.com 5 Ossila Limited © 2023
Декларация за съответствие на ЕС
Производител: Ossila BV, Biopartner 3 building, Galileiweg 8, 2333 BD Leiden, NL.
Декларира с цялата си отговорност, че посоченото оборудване съответства на приложимото законодателство на
ЕС за хармонизиране, посочено на предходната(-ите) страница(-и) на настоящия документ.
[Čeština] Prohlášení o shodě EU
Výrobce: Ossila BV, Biopartner 3 building, Galileiweg 8, 2333 BD Leiden, NL.
Prohlašujeme na vlastní odpovědnost, že uvedené zařízeni je v souladu s příslušnými harmonizačními předpisy EU
uvedenými na předchozích stranách tohoto dokumentu.
[Dansk] EU-overensstemme lseserklærin g
Producent: Ossila BV, Biopartner 3 building, Galileiweg 8, 2333 BD Leiden, NL.
Erklærer herved, at vi alene er ansvarlige for, at det nævnte udstyr er i overensstemmelse med den relevante EU-
harmoniseringslovgivning, der er anført på den/de foregående side(r) i dette dokument.
[Deutsch] EU-Konformitätserklärung
Hersteller: Ossila BV, Biopartner 3 building, Galileiweg 8, 2333 BD Leiden, NL.
Wir erklären in alleiniger Verantwortung, dass das aufgeführte Gerät konform mit der relevanten EU-
Harmonisierungsgesetzgebung auf den vorangegangenen Seiten dieses Dokuments ist.
[Eesti keel] ELi vastavusavaldus
Tootja: Ossila BV, Biopartner 3 building, Galileiweg 8, 2333 BD Leiden , NL.
Kinnitame oma ainuvastutusel, et loetletud seadmed on kooskõlas antud dokumendi eelmisel lehelküljel / eelmistel
lehekülgedel ära toodud asjaomaste ELi ühtlustamise õigusaktidega.
[Ελληνικά] Δήλωση πιστότητας ΕΕ
Κατασκευαστής: Ossila BV, Biopartner 3 building, Galileiweg 8, 2333 BD Leiden, NL.
Δηλώνουμε υπεύθυνα όn ο αναφερόμενος εξοπλισμός συμμορφώνεται με τη σχεnκή νομοθεσία εναρμόνισης της ΕΕ που
υπάρχει σnς προηγούμενες σελίδες του παρόντος εγγράφου.
[Español] Declaración de conformidad UE
Fabricante: Ossila BV, Biopartner 3 building, Galileiweg 8, 2333 BD Leiden, NL.
Declaramos bajo nuestra única responsabilidad que el siguiente producto se ajusta a la pertinente legislación de
armonización de la UE enumerada en las páginas anteriores de este documento.
[Français] Déclaration de conformité UE
Fabricant: Ossila BV, Biopartner 3 building, Galileiweg 8, 2333 BD Leiden, NL.
Déclarons sous notre seule responsabilité que le matériel mentionné est conforme à la législation en vigueur de l'UE
présentée sur la/les page(s) précédente(s) de ce document.
[Hrvatski] E.U izjava o sukladnosti
Proizvođač: Ossila BV, Biopartner 3 building, Galileiweg 8, 2333 BD Leiden, NL.
Izjavljujemo na vlastitu odgovornost da je navedena oprema sukladna s mjerodavnim zakonodavstvom EU-a o usklađivanju
koje je navedeno na prethodnoj(nim) stranici(ama) ovoga dokumenta.
[Italiano] Dichiarazione di conformità UE
Produttore: Ossila BV, Biopartner 3 building, Galileiweg 8, 2333 BD Leiden, NL.
Si dichiara sotto la propria personale responsabilità che l'apparecchiatura in elenco è conforme alla normativa di
armonizzazione UE rilevante indicata nelle pagine precedenti del presente documento.
[Latviešu] ES atbils tības deklarācija
Ražotājs: Ossila BV, Biopartner 3 building, Galileiweg 8, 2333 BD Leiden, NL.
Ar pilnu atbilclību paziņojam, ka uzskaitītais aprīkojums atbilst attiecīgajiem ES saskaņošanas tiesību aktiem, kas minēti
iepriekšējās šī dokumenta lapās.
[Lietuvių k.] ES atitikties deklaracija
Gamintojas: Ossila BV, Biopartner 3 building, Galileiweg 8, 2333 BD Leiden, NL,
atsakingai pareiškia, kad išvardinta įranga atitinka aktualius ES harmonizavimo teisės aktus, nurodytus ankstesniuose šio
dokumento

Solar Cell I-V Test System User Manual
www.ossila.com 6 Ossila Limited © 2023
[Magyar] EU-s megfelelőségi nyilatkozat
Gyártó: Ossila BV, Biopartner 3 building, Galileiweg 8, 2333 BD Leiden, NL.
Kizárólagos felelösségünk mellett kijelentjük, hogy a felsorolt eszköz megfelel az ezen dokumentum előző oldalán/oldalain
található EU-s összehangolt jogszabályok vonatkozó rendelkezéseinek.
[Nederlands] EU-Conformiteitsverklaring
Fabrikant: Ossila BV, Biopartner 3 building, Galileiweg 8, 2333 BD Leiden, NL.
Verklaart onder onze uitsluitende verantwoordelijkheid dat de vermelde apparatuur in overeenstemming is met de
relevante harmonisatiewetgeving van de EU op de vorige pagina('s) van dit document.
[Norsk] EU-samsvarserklæ ring
Produsent: Ossila BV, Biopartner 3 building, Galileiweg 8, 2333 BD Leiden, NL.
Erklærer under vårt eneansvar at utstyret oppført er i overholdelse med relevant EU-harmoniseringslavverk som står på
de(n) forrige siden(e) i dette dokumentet.
[Polski] Deklaracja zgodności Unii Europejskiej
Producent: Ossila BV, Biopartner 3 building, Galileiweg 8, 2333 BD Leiden, NL.
Oświadczamy na własną odpowiedzialność, że podane urządzenie jest zgodne ze stosownymi przepisami
harmonizacyjnymi Unii Europejskiej, które przedstawiono na poprzednich stronach niniejszego dokumentu.
[Por tuguês] Declaração de Conformidade UE
Fabricante: Ossila BV, Biopartner 3 building, Galileiweg 8, 2333 BD Leiden, NL.
Declara sob sua exclusiva responsabilidade que o equipamento indicado está em conformidade com a legislação de
harmonização relevante da UE mencionada na(s) página(s) anterior(es) deste documento.
[Română] Declaraţie de conformitate UE
Producător: Ossila BV, Biopartner 3 building, Galileiweg 8, 2333 BD Leiden, NL.
Declară pe proprie răspundere că echipamentul prezentat este în conformitate cu prevederile legislaţiei UE de armonizare
aplicabile prezentate la pagina/paginile anterioare a/ale acestui document.
[Slovensky] Vyhlásenie o zhode pre EÚ
Výrobca: Ossila BV, Biopartner 3 building, Galileiweg 8, 2333 BD Leiden , NL.
Na vlastnú zodpovednosť prehlasuje, že uvedené zariadenie je v súlade s príslušnými právnymi predpismi EÚ o
harmonizácii uvedenými na predchádzajúcich stranách tohto dokumentu.
[Slovenščina] Izjava EU o skladnosti
Proizvajalec: Ossila BV, Biopartner 3 building, Galileiweg 8, 2333 BD Leiden, NL.
s polno odgovornostjo izjavlja, da je navedena oprema skladna z veljavno uskladitveno zakonodajo EU, navedeno na
prejšnji strani/prejšnjih straneh tega dokumenta.
[Suomi] EU-vaatimustenm ukaisuusvakuutus
Valmistaja: Ossila BV, Biopartner 3 building, Galileiweg 8, 2333 BD Leiden, NL.
Vakuutamme täten olevamme yksin vastuussa siitä, että tässä asiakirjassa luetellut laitteet ovat tämän asiakirjan sivuilla
edellisillä sivuilla kuvattujen olennaisten yhdenmukaistamista koskevien EU-säädösten vaatimusten mukaisia.
[Svenska] EU-försäkran om överensstämmelse
Tillverkare: Ossila BV, Biopartner 3 building, Galileiweg 8, 2333 BD Leiden, NL.
Vi intygar härmed att den utrustning som förtecknas överensstämmer med relevanta förordningar gällande EU-
harmonisering som fmns på föregående sidor i detta dokument.

Solar Cell I-V Test System User Manual
www.ossila.com 7 Ossila Limited © 2023
3. Safety
3.1 Warning
3.2 Use of Equipment
The Ossila Solar Cell I-V Test System is designed to be used as instructed. It is intended for use
under the following conditions:
•Indoors in a laboratory environment (Pollution Degree 2).
•Altitudes up to 2000m.
•Temperatures of 5°C to 40°C; maximum relative humidity of 80% up to 31°C.
The unit is supplied with a 24 VDC power adapter with a power cord for the country of purchase,
in accordance with European Commission regulations and British Standards. Use of any other
electrical power cables, adaptors, or transformers is not recommended
3.3 Hazard Icons
The following symbols can be found at points throughout the rest of the manual. Note and read
each warning before attempting any associated operations associated with it:
Table 3.1. Hazard warning labels used in this manual.
Symbol
Associated Hazard
Electrical shock
3.4 General Hazards
Before installing or operating the Ossila Solar Cell I-V Test System there are several health and
safety precautions which must be followed and executed to ensure safe installation and operation.
•Do NOT connect external voltage sources to either SMU channel.
•The absolute maximum input voltage for the Vsense channels is ±12 V. Do NOT apply
input while not powered.

Solar Cell I-V Test System User Manual
www.ossila.com 8 Ossila Limited © 2023
3.5 Power Cord Safety
Emergency power disconnect options: use the power cord as a disconnecting method
and remove from wall. To facilitate disconnect, make sure the power outlet for this
cord is readily accessible to the operator.
3.6 Servicing
If servicing is required, please return the unit to Ossila Ltd. The warranty will be invalidated if:
•Modification or service has taken place by anyone other than an Ossila engineer.
•The Unit has been subjected to chemical damage through improper use.
•The Unit has been operated outside the usage parameters stated in the user
documentation associated with the Unit.
•The Unit has been rendered inoperable through accident, misuse, contamination,
improper maintenance, modification, or other external causes.
3.7 Health and Safety –Servicing
Servicing should only be performed by an Ossila engineer. Any modification or
alteration may damage the equipment, cause injury, or death. It will also void your
equipment’s warranty.

Solar Cell I-V Test System User Manual
www.ossila.com 9 Ossila Limited © 2023
4. Requirements
Table 4.1 details the power requirements for the Solar Cell I-V Test System, and the minimum
computer specifications for the Ossila Solar Cell I-V software.
Table 4.1. Solar Cell I-V Test System requirements.
Power
24 VDC
Operating System
Windows 10 or 11 (64-bit)
CPU
Dual Core 2 GHz
RAM
4 GB
Available Hard Drive Space
241 MB
Monitor Resolution
1680 x 1050
Connectivity
USB 2.0
Ethernet (requires DHCP)
5. Unpacking
5.1 Packing List
The standard items included with the Ossila Solar Cell I-V Test System are:
•Ossila Solar Cell I-V Test System.
•24 VDC power adapter.
•USB-B cable.
•USB memory stick pre-loaded with the user manual, USB drivers, quality control data, and
software installer.
•Resistor test device.
5.2 Damage Inspection
Examine the components for evidence of shipping damage. If damage has occurred, please
contact Ossila directly for further action. The shipping packaging will come with a shock indicator
to show if there has been any mishandling of the package during transportation.

Solar Cell I-V Test System User Manual
www.ossila.com 10 Ossila Limited © 2023
6. Specifications
The Solar Cell I-V Test System specifications are shown in Table 6.1.
Table 6.1. Ossila Solar Cell I-V Test System specifications.
Voltage range
±10 mV to ±10 V
Voltage accuracy
±10 mV offset
Voltage resolution
170 μV
Current range
±10 nA to ±200 mA (5 ranges)
Current accuracy
±10 nA (at 20 μA range)
Current resolution
0.1 nA (at 20 μA range)
Substrate Size
20 mm x 15 mm
25 mm x 25 mm
75 mm x 25 mm
Substrate Compatibility
T2002B, T2003B –S211
T2002E, T2003E –S2006
T2002F, T2003F –S241, S251
Overall Dimensions
(Automated)
Width: 150 mm
Height: 55 mm
Depth: 300 mm
Overall Dimensions (Manual)
Source Measure Unit
Width: 125 mm; Height: 55 mm; Depth: 185 mm
Test Board
Width: 105 mm; Height: 40 mm; Depth: 125 mm
(T2002F - Width: 100 mm; Height: 40 mm; Depth: 150 mm)

Solar Cell I-V Test System User Manual
www.ossila.com 11 Ossila Limited © 2023
7. System Components
The Solar Cell I-V Test System is comprised of 2 items: the Solar Cell I-V Test System (Figure 7.1 or
Figure 7.2) and the Ossila I-V Curve software (Figure 7.3).
Figure 7.1. Solar Cell I-V Test System (Automated).
Figure 7.2. Solar Cell I-V Test System (Manual): a Source Measure Unit and Push-Fit Test Board.
Figure 7.3. Solar Cell I-V Test System software.

Solar Cell I-V Test System User Manual
www.ossila.com 12 Ossila Limited © 2023
8. Installation
1. Install the Ossila Solar Cell I-V software on your PC.
I. Run the file ‘Ossila-Solar-Cell-IV-Installer-vX-X-X-X.exe’ on the USB memory stick
provided.
II. Follow the on-screen instructions to install the software.
2. Connect the 24 VDC power adaptor to the power socket on the rear of the unit.
3. Connect the unit to your PC using the provided USB-B cable, or an Ethernet cable if
preferred.
9. Operation
9.1 Measurement Types
The Solar Cell I-V software can perform 3 different types of measurements. Each measurement
type can be selected using the tabs at the top of the window. The available measurements are:
1. Characterisation (Section 9.1.1).
2. Lifetime (Section 9.1.2).
3. Stabilised Current (Section 9.1.3).
Each measurement type requires several settings to be selected before it can be performed.
Settings that are shared between all measurements are detailed in Section 9.3. Measurement-
specific settings are detailed in Sections 9.4, 9.5, and 9.6.
9.1.1 Characterisation
The Characterisation tab performs current-voltage (I-V) measurement and analysis of solar cells.
The analysis calculates the following properties:
•Power conversion efficiency (PCE)
•Fill factor (FF)
•Short-circuit current density (Jsc)
•Open-circuit voltage (Voc)
•Shunt resistance (Rsh)
•Series resistance (Rs)
•Maximum power (Pmax)
Note: The Ossila Solar Cell I-V software can also be downloaded from
www.ossila.com/pages/software-drivers

Solar Cell I-V Test System User Manual
www.ossila.com 13 Ossila Limited © 2023
Figure 9.1. Solar Cell I-V software: The Characterisation tab.
9.1.2 Lifetime
The Lifetime tab tracks PCE, FF, Jsc, and Voc over time by performing periodic I-V measurements
and analysis. Between I-V measurements, the solar cell can be held at short-circuit, open-circuit,
or maximum power.
Figure 9.2. Ossila Solar Cell I-V software: The Lifetime tab.
9.1.3 Stabilised Current
The Stabilised Current tab lets you measure the evolution of the photogenerated current at
specific voltages.

Solar Cell I-V Test System User Manual
www.ossila.com 14 Ossila Limited © 2023
Figure 9.3. Ossila Solar Cell I-V software: The Stabilised Current tab.
9.2 Quick Start Guide
1. Start the Ossila Solar Cell I-V software. The window shown in Figure 9.1 will open.
2. Choose a measurement type as described in Section 9.1.
3. Place your sample in the device holder.
4. Place the device holder beneath your solar simulator.
5. Set the appropriate settings in the software (explained in more detail in Sections 9.4 - 9.8).
6. Open the shutter of your solar simulator.
7. Click the ‘Measure’ button.
I. For each pixel, measurements are performed using the chosen measurement
settings.
II. This process is repeated until all pixels have been measured.
8. If automatic saving is turned on, the measurement data and settings will then be saved.

Solar Cell I-V Test System User Manual
www.ossila.com 15 Ossila Limited © 2023
9.3 Shared Software Settings
The settings in these sections are shared between all measurement types.
9.3.1 System Settings
Figure 9.4. System settings.
(I) System Address
•Select the COM port or IP address of the connected unit you intend to use (USB and
Ethernet connection respectively).
I. This box will be populated automatically with the addresses of any units connected
to the computer.
(II) Voltage Source
•Select which SMU channel of the Source Measure Unit the test board is connected to.
I. ‘SMU 1’ will be automatically selected when pixel switching is set to ‘Automated’.
(III) Current Range
•Select the range of currents to be used for the measurement.
I. This defines the upper limit and accuracy of current measurements that can be
performed by the unit. The values for each range are given in Table 9.1.
II. Automatic range selection will start on the lowest current range and automatically
switch to higher ranges if the current increases above the maximum for a range.

Solar Cell I-V Test System User Manual
www.ossila.com 16 Ossila Limited © 2023
Table 9.1. Maximum current and accuracy for the current ranges of the Ossila Solar Cell I-V Test System.
Maximum Current
Accuracy
Precision
Resolution
±200 mA
±500 μA
10 μA
1 μA
±20 mA
±10 μA
1 μA
100 nA
±2000 μA
±1 µA
100 nA
10 nA
±200 μA
±100 nA
10 nA
1 nA
±20 μA
±10 nA
1 nA
100 pA
(IV) Sampling Rate
•Select the number of samples to be taken for each data point.
I. A higher number of samples per point will improve the accuracy and precision of
the measurement. However, this will increase the time taken for the measurement
to be performed.
9.3.2 Device Details
Figure 9.5. Device Details settings for automated (left) and manual (right) switching. Selecting Automated –
External gives the same options as manual switching.
(I) Pixel Switching
•Select whether changing the connected pixel is done manually, automatically by the
system, or whether to use the external connection on the automated system.
(II) Pixels to Test (Automated Switching)
•Select which pixels to measure.
I. The pixel numbers are labelled on the device holder.
(III) Number of Pixels (Automated –External and Manual Switching)
•Set the number of individual solar cell pixels in the device being measured.

Solar Cell I-V Test System User Manual
www.ossila.com 17 Ossila Limited © 2023
(IV) Pixel Area
•Set the area in cm2of each pixel in the device.
(V) Inverted Device
•Set whether the device to be measured is inverted.
I. This option should be on if the anode of your device connects to the ‘cathode’ pins
in the device holder.
9.4 Characterisation Settings
9.4.1 Measurement Settings
Figure 9.6. Measurement Settings for the characterisation and lifetime measurements.
(I) Start Voltage
•Set the voltage in volts at which to start the current-voltage measurement.
I. This can be set between -10 V and +10 V.
(II) End Voltage
•Set the voltage in volts at which to end the current-voltage measurement.
I. This can be set between -10 V and +10 V.
(III) Voltage Increment
•Set the step size in volts for changing the voltage during current-voltage measurement.
(IV) Voltage Settle Time
•Set the time in seconds between applying a voltage and measuring the current.

Solar Cell I-V Test System User Manual
www.ossila.com 18 Ossila Limited © 2023
I. This has a maximum of 10 seconds.
(V) Illumination
•Set the illumination intensity (in mW.cm-2) being used during the measurement.
(VI) Hysteresis I-V
•This option performs a reverse current-voltage measurement after the forward current-
voltage measurement has completed.
I. This reverses the set start and end voltages and uses the same voltage increment
and settle time as the forward measurement.
(VII)Use Shutter
•If set to On, the Shutter connection on the Source Measure Unit and automated system
will be activated during a measurement and deactivated afterwards.
I. When activated, the shutter outputs a constant 5 V signal.
9.5 Lifetime Settings
9.5.1 Measurement Settings
Figure 9.7. Measurement Settings for the characterisation and lifetime measurements.
(I) Start Voltage
•Set the voltage in volts at which to start the current-voltage measurement.
I. This can be set between -10 V and +10 V.
(II) End Voltage
•Set the voltage in volts at which to end the current-voltage measurement.

Solar Cell I-V Test System User Manual
www.ossila.com 19 Ossila Limited © 2023
I. This can be set between -10 V and +10 V.
(III) Voltage Increment
•Set the step size in volts for changing the voltage during current-voltage measurement.
(IV) Voltage Settle Time
•Set the time in seconds between applying a voltage and measuring the current.
I. This has a maximum of 10 seconds.
(V) Illumination
•Set the illumination intensity in mW.cm-2 being used during the measurement.
(VI) Hysteresis I-V
•Set whether to perform a reverse current-voltage measurement after the forward current-
voltage measurement has completed.
I. This reverses the set ‘start’and ‘end’voltages and uses the same voltage increment
and settle time as the forward measurement.
(VII)Use Shutter
•If set to On, the Shutter connection on the Source Measure Unit and automated system
will be activated during a measurement and deactivated afterwards.
I. When activated, the shutter outputs a constant 5 V signal.
9.5.2 Lifetime Parameters
Figure 9.8. Lifetime Parameters settings.
(I) Duration
•Set the total duration in hours of the lifetime measurement.

Solar Cell I-V Test System User Manual
www.ossila.com 20 Ossila Limited © 2023
(II) Interval
•Set the time interval in minutes between performing repeat current-voltage
measurements of the device.
(III) Hold Voltage
•Set the voltage that all pixels will be held at between measurements.
•This can be set as:
I. Short-Circuit –hold at 0 V.
II. Maximum Power –hold at the average maximum power point determined from
most recent current-voltage curve.
III. Open-Circuit –hold at the average open-circuit voltage determined from the most
recent current-voltage curve.
9.6 Stabilised Current Settings
9.6.1 Measurement Settings
Figure 9.9. Experimental Parameters settings for the Stabilised Current Output.
(I) Voltage
•Set the voltage to apply to the sample for the measurement.
I. This can be set between -10 V and +10 V.
(II) Total Time
•Set the total length of the measurement in minutes.
Note: As the voltage source is a single channel, the hold voltage will be the same for all pixels
being tested.