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FTPS: Fourier Transform Photocurrent Spectroscopy
Enlitech‘s FTPS is a highly sensitive photocurrent and external quantum efficiency (HS-EQE) spectroscopy system. It utilizes Fourier Transform Signal Processing technology to enhance and break through the photocurrent signal detection limits. The lowest EQE level can be as low as 10-5% (7 orders)*. FTPS can be applied to detect the tail states of perovskite solar cells and the charge transfer state of organic solar cells, which are key to improving Voc loss mechanisms. Another common application is Urbach Energy measurement.
Key Features
- Direct spectroscopy evidence for trap states, defect states or charge transfer states.
- Wavelength range: 0.7-2 eV, 600-1800nm.
- Turn-key solution; generate reliable spectral data after installation. Time-saving and cost-effective (at least 1-year and 20k USD).
- Complete the training course, which includes operational and fundamental background training.
- Proven by over 50 SCI journal papers.
- Not just data acquisition, but also energy level fitting! Enlitech provides CTS and Urbach Energy level fitting software.
Specifications
| Parameter | Specification |
|---|---|
| Wavelength Range | 0.7-2 eV, 600-1800nm |
| Dynamic Range | ≥ 7 orders ≥120dB; and can be extended to 140dB (option) |
| Repeatability | >99 % (under AM1.5G) |
| Software | Charge Transfer Energy Fitting, Urbach Energy Calculation |
| Equipment dimension | 550(L)*510(W)*355.3mm(H) |
Applications
- Trap states, defect states or charge-transfer-state (CTS).
- CTS fitting through Marcus theory.
- Urbach energy fitting.
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