测试模式对碲化镉和钙钛矿太阳电池量子效率测试结果的影响

The Influence of Testing Mode on Quantum Efficiency Measurement Results of CdTe Solar Cells and Perovskite Solar Cells

量子效率测试是太阳电池研究中重要的器件表征方法之一。在测试薄膜太阳电池量子效率时,不同测试条件会引起量子效率测试结果的差异,从而对准确分析太阳电池器件制备工艺条件造成一定的影响。测试了不同结构的碲化镉(CdTe)薄膜太阳电池和钙钛矿太阳电池在直流模式和交流模式两种不同模式下的量子效率,分析了影响量子效率测试结果的主要因素。实验结果表明CdTe薄膜太阳电池的量子效率测试结果受测试频率及太阳电池接受的光照历史两大因素影响;钙钛矿电池的器件因其电容特性强,测试结果受频率的影响更大。

As an effective device characterization method,the measurement of quantum efficiency(QE)can be tremendously informative about different structures of thin-film solar cell.While the results may be different if the solar cells are tested in different conditions.The QE of CdTe and perovskite thin film solar cells with different structures were measured in direct current(DC)mode and alternating current(AC)mode.The results show that the quantum efficiency of CdTe solar cells is affected by test frequency and lighted time.There is more effect of the results of perovskite thin film solar cells than CdTe thin film solar cells by frequency because of its device capacitance characteristics.