Quantum Efficiency and IPCE Measurement Systems

Quantum Efficiency and IPCE Measurement Systems from ScienceTech.

Sciencetech designs and offers different models of photovoltaic testing systems (PTSs). In their portfolio, you can find turn-key, one-box systems and modular versions with fiber light delivery for example for use inside the glovebox. It allows measurement for solar cell testing and characterization.

Sciencetech PTS system conducts SR, EQE, IQE and IV measurements with user-friendly software.

The system includes a main xenon arc lamp, a 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.

Application Categories: Solar & Environmental

Description

Features

Applications

Datasheets

Description

Features

Spectral range 250 to 2500nm
Monochromatic light power up to 125mW total
Keithley 2400 series source meter (measurement of large capacitance solar cell is possible)
Stanford SR800 series lock-in amplifier
User selectable bias voltage
Light-tight measurement chamber
DC mode measurement capability (optional)

Measurement Capabilities		PTS 1 SR (175-9203)	OTS 2 QE/IPCE (175-9204)	PTS 2 IQE (175-9205)
Current-Voltage (IV) Testing	Measures VOC , ISC, Rshunt, Pmax, efficiency %, and fill factor	–	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	–	–	Included 300-1100 nm

Configuration Description		PTS 1 SR (175-9203)	OTS 2 QE/IPCE (175-9204)	PTS 2 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	–	•	•
	· 25x25mm AAA, (ASTM E927-19) Solar Simulator		•	•
	· Includes mounted AM1.5G filter + additional filter slot	–	•	•
Reference Detector	· Broadband pyroelectric detector with quartz window, Element diameter: 5 mm	•	•	•
Reference Detector	· 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	–	–	•
IQE Measurement System	· Internal quantum efficiency measurement determined from material reflectance measurement (hardware included) 300 – 1100nm range.	–	–	•
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	•	•	•