Quantum Efficiency
EQE (IPCE), IQE, and IV Measurements in One Configurable Turnkey System
Advanced CPM, PTD, SSP techniques optional
Quantum Efficiency Measurements Capabilities
The quantum efficiency (QE) of a device is a measure of its ability to convert incoming photons into electrons or other charge carriers.
For example, a device with a Quantum efficiency (QE) of 50% will produce 50 electrons of signal if it receives 100 photons. QE is critical for light-detecting devices such as cameras, solar cells, and photodetectors. Quantum efficiency is determined by the wavelength of the photons as well as the characteristics of the device material.
Quantum efficiency can be external or internal, and it can be described as a function of wavelength or energy.
Quantum efficiency
measurement systems allow users to quantify the performance of photovoltaic
cells. Quantum efficiency focuses on the proportion of the incident photons
applied to the cell that are successfully collected.
Sciencetech's PV Testing System (PTS) is a cost-effective complete TurnKey system. It allows measurement for solar cell testing and characterization:
External Quantum Efficiency (EQE | IPCE)
Defined as the ratio of the number of carriers generated and collected by the solar cell to the number of photons of an incident beam without considering the losses due to reflection, transmission, or absorption from the sample
Internal Quantum Efficiency (IQE)
A calculation of the QE with consideration of the losses at the sample, i.e., the ratio of the number of carriers generated and collected by the solar cell to the number of photons that are truly converted by the solar cell.
Quantum Efficiency Measurement Standards
For Quantum Efficiency Measurements of Solar Cell Testing and Characterization
All Sciencetech systems incorporate adherence to industry standards. Sciencetech PV Testing System equipment are designed and manufactured according to:
Test cell included for verification. Sciencetech includes a complete Quality Control Report including test results (calibration, spectral response, quantum efficiency, and IV measurements) with each order.
Quantum Efficiency Measurement System (PTS) Model for Solar Cell Testing
Sciencetech Inc. designs and manufactures five different variants of Quantum Efficiency Measurement System (PTS), as shown in the following table, for implementation of different experimental methods: External and Internal Quantum Efficiency (EQE and IQE), Constant Photocurrent Method (CPM), and Steady State Photo Conductivity (SSPC).
|
PV Cell
Testing Model |
IV
Curves |
Extended Spectral Range | Spectral Response (SR) |
External Quantum Efficiency (EQE) |
Internal Quantum Efficiency (IQE) |
Constant Photocurrent Method (CPM) |
Photothermal
Deflection Spectroscopy (PDS) |
Steady State
Photoconductivity (SSPC) |
| X |
|
X | X | |||||
| X | X | X | X | (upgrade) | ||||
| X | (upgrade) | X | X | (upgrade) | X | |||
| PTS-3-PTD | X | (upgrade) | X | X | (upgrade) | X | ||
| X | (upgrade) | X | X | (upgrade) |
|
X | ||
|
|
If you do not see the upgrade you are looking for, contact us! We can accommodate a wide variety of custom accessories and techniques.
Research Publications Referencing Sciencetech PTS QE
Sciencetech PTS - Quantum Efficiency Measurement Brochures
Download our brochures for PTS Quantum Efficiency Measurement Systems.
