Ossila Solar Cell I-V Test System User manual

enabling materials science Ossila.com
Solar Cell I-V Test
System (Manual)
User Manual
Manual version: 2.0.I
Product code: T2002
Product Version 2.0
Software version: 1.4

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Contents
1. Overview...................................................................................................................................................... 2
2. EU Declaration of Conformity (DoC) ........................................................................................................ 3
3. Safety............................................................................................................................................................ 6
3.1 Use of Equipment .......................................................................................................................................................... 6
3.2 Hazard Icons................................................................................................................................................................... 6
3.3 General Hazards ............................................................................................................................................................ 6
3.4 Power Cord Safety ......................................................................................................................................................... 6
3.5 Servicing.......................................................................................................................................................................... 7
3.6 Health and Safety –Servicing ....................................................................................................................................... 7
4. Requirements.............................................................................................................................................. 8
5. Unpacking.................................................................................................................................................... 8
5.1 Packing List..................................................................................................................................................................... 8
5.2 Damage Inspection........................................................................................................................................................ 8
6. Specifications .............................................................................................................................................. 9
7. System Components ................................................................................................................................ 10
8. Installation ................................................................................................................................................ 11
9. Operation................................................................................................................................................... 11
9.1 Measurement Types.................................................................................................................................................... 11
9.2 Quick Start Guide......................................................................................................................................................... 13
9.3 Shared Software Settings............................................................................................................................................ 13
9.4 Characterisation Settings............................................................................................................................................ 16
9.5 Lifetime Settings .......................................................................................................................................................... 17
9.6 Stabilised Current Settings ......................................................................................................................................... 19
9.7 Saving and Loading Settings....................................................................................................................................... 20
9.8 Saving Results .............................................................................................................................................................. 20
9.9 Controls ........................................................................................................................................................................ 22
9.10 Plot Controls................................................................................................................................................................. 22
9.11 Test Devices.................................................................................................................................................................. 23
10. Troubleshooting........................................................................................................................................ 26
11. Related Products ...................................................................................................................................... 27

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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.

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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/T2002E2), Solar Cell I-V Test
System –No Test Board (T2002D2)
Serial number: T2002A2-xxxx, T2002B2-xxxx, T2002D2-xxxx, T2002E2-xxxx.
Object of declaration:
Solar Cell I-V Test System –Manual (T2002A2/T2002B2/T2002E2), Solar Cell I-V Test System –No
Test Board (T2002D2)
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

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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 lseserklæring
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 conformitéUE
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 diconformità 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 atbilstības 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
[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 ditdocument.
[Norsk] EU-samsvarserklæring
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.
[Português] 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 preEÚ
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
tohtodokumentu.

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[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-vaatimustenmukaisuusvakuutus
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 omöverensstämmelse
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.

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3. Safety
3.1 Use of Equipment
The Ossila Solar Cell I-V Test System (Manual) 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
3.2 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
3.3 General Hazards
Before installing or operating the Ossila Solar Cell I-V Test System (Manual), there are several
health and safety precautions which must be followed and executed to ensure safe installation
and operation.
3.4 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.

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3.5 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.
3.6 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.

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4. Requirements
The system requires a computer running Windows with an available USB or a network connection.
Further details are given in Table 4.1.
Table 4.1. Solar Cell I-V Test System requirements.
Power
24 VDC
Operating System
Windows 10
CPU
Dual Core 2 GHz
RAM
2 GB
Available Hard Drive Space
192 MB
Monitor Resolution
1680 x 1050
Connectivity
USB 2.0 or Ethernet
5. Unpacking
5.1 Packing List
The standard items included with the Ossila Solar Cell I-V Test System (Manual) are:
•Ossila Solar Cell I-V Test System and Test Board.
•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 devices.
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.

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6. Specifications
The Solar Cell I-V Test System (Manual) specifications are shown in Table 6.1.
Table 6.1. Ossila Solar Cell I-V Test System (Manual) specifications.
Voltage range
±333 µV to ±10 V
Current range
±10 nA to ±200 mA
Substrate Size
20 mm x 15 mm or 25 mm x 25 mm
Substrate
Compatibility - T2003A
S101 (OLED substrates)
Substrate
Compatibility - T2003B
S211 (PV substrates)
Substrate
Compatibility - T2003C
S171 (Pixelated cathode substrates)
Substrate
Compatibility - T2003E
S2006 (ITO Glass Substrates –PV and OLED 25 mm Square)
Overall Dimensions
Source Measure Unit: Width: 125 mm; Height: 55 mm; Depth: 185 mm
Test Board: Width: 105 mm; Height: 40 mm; Depth: 125 mm

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7. System Components
The Solar Cell I-V Test System (Manual) is comprised of 3 items: the Source Measure Unit (Figure
7.1), Push-Fit Test Board (Figure 7.2), and the Ossila I-V Curve software (Figure 7.3).
Figure 7.1. Source Measure Unit.
Figure 7.2. Push-Fit Test Board.
Figure 7.3. Solar Cell I-V Test System software.

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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.
Note: The Ossila Solar Cell I-V software and can also be downloaded from
https://www.ossila.com/pages/software-drivers
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)

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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.

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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).
I. Set ‘Pixel Switching’ to ‘Manual’.
6. Open the shutter of your solar simulator.
7. Click the ‘Measure’ button.
I. You will be prompted to switch to the first pixel to measure.
II. For each pixel, measurements are performed using the chosen measurement
settings.
III. 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.
9.3 Shared Software Settings
The settings in these sections are shared between all measurement types.

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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.
(III) 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. The maximum current values for each range are shown in the range selection box.

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Table 9.1. Maximum current and accuracy for the different range settings for the Ossila Solar Cell I-V Test
System.
Maximum Current
Accuracy
±200 mA
±500 μA
±20 mA
±10 μA
±2000 μA
±1 µA
±200 μA
±100 nA
±20 μA
±10 nA
(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.
(I) Pixel Switching
•Select ‘Manual’ in the pixel switching setting.
(II) Number of Pixels
•Set the number of individual solar cell pixels in the device being measured.
(III) Pixel Area
•Set the are in cm2of each pixel in the device.

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(IV) 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.
I. This has a maximum of 10 seconds.
(V) Illumination
•Set the illumination intensity (in mW.cm-2) being used during the measurement.

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(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.
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.
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.

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(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.
9.5.2 Lifetime Parameters
Figure 9.8. Lifetime Parameters settings.
(I) Duration
•Set the total duration in hours of the lifetime measurement.
(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.
Note: As the voltage source is a single channel, the hold voltage will be the same for all
pixels being tested.