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Quantum Efficiency

Quantum Efficiency

Sciencetech PTS system conducts SR, EQE, IQE and IV measurements with user friendly software. The system includes a main xenon arc lamp, monochromator with automated order sorting filters, a steady-state solar simulator Class AAA bias light source ( only with PTS-2 ) measurement electronics, computer, and software required to measure solar cell characteristics. The system provides users with a light tight sample chamber for all measurements. Shielded and light tight test area enclosure has convenient removable cover allowing access from top, front and sides.

Measurement Capabilities

PTS 1 SR
(175-9203)

PTS 2 QE/IPCE
(175-9204)

PTS 2 IQE
 (175-9205)

 Current-Voltage (IV) Testing

Measures VOC , ISC, Rshunt, Pmax, efficiency %, and fill factor

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Included

Included

 Spectral Response (SR)*

250 - 2500 nm scanning range

Included

Included

Included

 External Quantum Efficiency (EQE)

Incident photon to converted electron ratio (IPCE)

Included

Included

Included

 AC  and  DC measurement mode

Modulated / Continuous measurement  capability

Included

Included

Included

 Internal Quantum Efficiency (IQE)

The ratio of charge carriers collected by the cell to the number of photons absorbed by the cell

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Included
300 - 1100 nm

 

 

 

 

 

Technical Specifications

 

 

 

 

Configuration Description

PTS 1 SR      (175-9203)

PTS 2 QE/IPCE      (175-9204)

PTS 2 QE+IQE     (175-9205)

Tunable Light Source

· 150 W Xenon short arc lamp, 1200 hour lifetime

· 250 - 2500 nm tuning/scanning range (Xenon)

·  1/4 m Czerny-Turner monochromator with an adjustable bandpass of 0.4 to 48 nm with 600 l/mm grating , 0.2-24 nm with 1200 l/mm grating

· Motorized triple grating turret system (3 gratings included):

 

· 1200 l/mm blazed at 250 nm

 

· 1200 l/mm blazed at 500 nm

 

· 600 l/mm blazed at 1000 nm

· Adjustable beam size ( 0.5mm - 19 mm diameter  with standard optics)

· Includes hard coated order sorting filters

Bias Light Source

· 150 W Xenon short arc lamp, average lifetime 1200 hours

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· 25x25mm AAA, (ASTM E927-19) Solar Simulator

 

· Includes mounted AM1.5G filter + additional filter slot

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Reference      Detector

· Broadband pyroelectric detector with quartz window, Element diameter: 5 mm

· Calibrated range 250 - 2500 nm

Measurement System

· Source meter, maximum 30 W, 30 V, 1 A

· Voltage accuracy 30 µV and current accuracy 10 pA

· Measurement time period for 100 IV points is 20s

· Voltage bias user settable ±10 V capability

· Lock-in Amplifier

· Chopper 4 - 200 Hz

· Standard auto time constant feature

· Temperature control (10-60 °C)  (1)

Accessory Available

Accessory Available

Accessory Available

· Ac and DC measurement mode

IQE Measurement System

· 50 mm integrating sphere

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· Internal quantum efficiency measurement determined from material reflectance measurement (hardware included) 300 - 1100nm range.

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Sample Placement

· 50 × 50 mm  simple sample spacer for proper placement of the sample under the monochromatic and bias light beam. Includes simple electrical connections.

Software and Interface

· Modern software written in .NET (Windows 10/11 Operating System)

· Compatible with Windows 10/11, 32/64bit

· Data files and automation log exportable as ASCII

· Pre-configured and tested control computer included

· Built in microcontroller switches and monitors signals automatically

· 1 USB port

· 1 IEC 60320 C14 power entry inlet

Compliance

· Intended for use in measurements according to ASTM E 1021-15 ,   ASTM E948, IEC 60904-8, IEC 60904-1

Power system

· Single phase, configurable for 230 VAC, 50 Hz or 110 VAC, 60 Hz

 

Spectral Range 250-2500 nm, Tunable Light Source, Source Measure Unit, Lock-in Amplifier, Light Tight Sample Chamber, User Selectable Bias Voltage, AC and DC Measurement Mode, Manually Controlled Shutter, SciPV software for full control of the system.