Spectral Response Measurements of Perovskite Solar Cells
Spectral Response Measurements of Perovskite Solar Cells
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DOI：
10.1109/jphotov.2018.2878003
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发表时间：
2019-01-01
影响因子：
3
通讯作者：
Gottschalg, Ralph
中科院分区：
文献类型：
--
作者：
Bliss, Martin;Smith, Alex;Gottschalg, Ralph
提出了一种普遍适用于所有钙钛矿器件的新的光谱响应（SR）测量程序。其目的是提高测量精度和重复性的SR曲线和电流-电压曲线的光谱失配因子（MMF）的校正。频率响应，预处理的影响，以及依赖于入射光强度和电压负载对SR测量的特征在于两种不同结构的钙钛矿设备类型。它示出，设备预处理影响SR形状，导致高达0.8%的误差，当使用具有良好的光谱匹配和A类太阳能模拟器的参考电池时，光谱MMF校正。在两种器件类型上观察到对入射光强度和电压负载的波长依赖性响应，这突出了在短路电流和最大功率点测量以校正光谱失配的需要。给出建议的方法可确保应用正确的测量条件，并针对性能不稳定性对测量进行校正。
A new spectral response (SR) measurement routine is proposed that is universally applicable for all perovskite devices. It is aimed at improving measurement accuracy and repeatability of SR curves and current-voltage curve spectral mismatch factor (MMF) corrections. Frequency response, effects of preconditioning as well as dependency on incident light intensity and voltage load on SR measurements are characterized on two differently structured perovskite device types. It is shown that device preconditioning affects the SR shape, causing errors in spectral MMF corrections of up to 0.8% when using a reference cell with a good spectral match and a class A solar simulator. Wavelength dependent response to incident light intensity and voltage load is observed on both device types, which highlights the need to measure at short-circuit current and maximum power point to correct spectral mismatch. The method with recommendations given ensures that the correct measurement conditions are applied and measurements are corrected for instability in performance.