电致发光
光致发光
材料科学
光电子学
三碘化物
钙钛矿(结构)
图层(电子)
平面的
活动层
太阳能电池
电流密度
纳米技术
薄膜晶体管
化学
电极
结晶学
色素敏化染料
计算机科学
物理化学
计算机图形学(图像)
物理
电解质
量子力学
作者
Arman Mahboubi Soufiani,Murad J. Y. Tayebjee,S. Meyer,Anita Ho‐Baillie,Jae Sung Yun,Rowan W. MacQueen,Leone Spiccia,Martin A. Green,Ziv Hameiri
摘要
In this study, we provide insights into planar structure methylammonium lead triiodide (MAPbI3) perovskite solar cells (PSCs) using electroluminescence and photoluminescence imaging techniques. We demonstrate the strength of these techniques in screening relatively large area PSCs, correlating the solar cell electrical parameters to the images and visualizing the features which contribute to the variation of the parameters extracted from current density-voltage characterizations. It is further used to investigate one of the major concerns about perovskite solar cells, their long term stability and aging. Upon storage under dark in dry glovebox condition for more than two months, the major parameter found to have deteriorated in electrical performance measurements was the fill factor; this was elucidated via electroluminescence image comparisons which revealed that the contacts' quality degrades. Interestingly, by deploying electroluminescence imaging, the significance of having a pin-hole free active layer is demonstrated. Pin-holes can grow over time and can cause degradation of the active layer surrounding them.
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