Additive Enhanced Crystallization of Solution-Processed Perovskite for Highly Efficient Planar-Heterojunction Solar Cells
Additive Enhanced Crystallization of Solution-Processed Perovskite for Highly Efficient Planar-Heterojunction Solar Cells
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DOI：
10.1002/adma.201400231
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发表时间：
2014-06-11
影响因子：
29.4
通讯作者：
Jen, Alex K. -Y.
中科院分区：
文献类型：
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作者：
Liang, Po-Wei;Liao, Chien-Yi;Jen, Alex K. -Y.
在钙钛矿前驱体溶液中加入合理选择的添加剂是控制钙钛矿结晶速率的有效方法。加工添加剂在结晶过程中同时促进成核和调节晶体生长的动力学，导致钙钛矿形貌更加平滑，覆盖面积和晶体均匀度得到改善。因此，它能够通过低温溶液工艺(低于150摄氏度)制造非常高的PCE(类似于12%)平面异质结太阳能电池。这项研究为优化钙钛矿活性层性能以扩大器件性能上限开辟了新的方向。
An effective method to control the rate of perovskite crystallization by incorporating rationally chosen additives into the perovskite precursor solutions is demonstrated. The processing additives simultaneously facilitate nucleation and modulate the kinetics of crystal growth during crystallization, leading to much smoother perovskite morphology with improved coverage area and crystal uniformity. As a result, it enables very high PCE (similar to 12%) planar-heterojunction solar cells to be fabricated through the low-temperature solution processes (under 150 degrees C). This study opens up a new direction for optimizing perovskite active layer properties to expand device performance ceilings.