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PTS-3-CPM使用户能够测量与PTS-1和PTS-2相同的IV，光谱响应和量子效率，但是增加了功能强大的恒定光电流方法（CPM）。

CPM系统使用偏光太阳能光源照亮样本太阳能产品，同时调制单独的光源以覆盖指定的光谱。

偏置源可确保信号在低电平照明时不会受到非线性响应的支配，而是根据调制源的波长给出基线响应。这允许高精度地测量缺陷密度。请与大家联系以获取更多信息。

PTS-3-CPM包括：

? IV测试

? 光谱响应

? 量子效率/ IPCE 

? 恒定光电流法(CPM)

(PTS-3-CPM) Constant Photocurrent Method System

The PTS-3-CPM allows users the same ability to measure IV, Spectral Response, and Quantum Efficiency as the PTS-1 and PTS-2, but adds the powerful Constant Photocurrent Method (CPM). The CPM system illuminates the sample solar sell with a bias solar light source while a separate light source is modulated to cover a specified spectrum. The bias source ensures that the signal is not dominated by the non-linear response at low-level illumination, but rather gives a baseline response dependent on the wavelength of the modulated source. This allows for a highly precise measurement of defect density. Please speak with a Sciencetech Technical Specialist for more information.

PTS-3-CPM Includes:

-IV Testing

-Spectral Response

-Quantum Efficiency/IPCE

-CPM Measurements