Photostability of MAPbI 3 Perovskite Solar Cells by Incorporating Black Phosphorus
Photostability of MAPbI 3 Perovskite Solar Cells by Incorporating Black Phosphorus
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DOI：
10.1002/solr.201900197
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发表时间：
2019-09
期刊：
影响因子：
7.9
通讯作者：
Yong Wang;Haijuan Zhang;Taiyang Zhang;W. Shi;Miao Kan;Jie Chen;Yixin Zhao
中科院分区：
文献类型：
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作者：
Yong Wang;Haijuan Zhang;Taiyang Zhang;W. Shi;Miao Kan;Jie Chen;Yixin Zhao
光稳定性是有机-无机混合钙钛矿太阳能电池（PSC）最重要的挑战之一。通过将黑磷（BP）（众所周知的自修复和其调节电荷复合的上级性质）掺入到CH 3 NH3 PbI 3钙钛矿（MAPbI 3/BP）中，相关联的PSC除了光伏（PV）性能之外还表现出光稳定性的显著增强。在干燥的N2手套箱中连续白色LED照明1000 h后，基于MAPbI 3/BP的PSC保持初始效率的约94%，而没有并入BP的它们的对应物降低至约30%。虽然BP对钙钛矿晶体的形态和结构的影响很小，但Pb 0缺陷被有效地抑制，并且发现热载流子复合被推迟，如飞秒光学光谱所证实的。利用该材料同时抑制Pb 0缺陷形成和延迟电荷复合，例如BP，是增强有机-无机混合钙钛矿基PSC及其兄弟的光稳定性的有前途的策略。
Photostability is one of the most vital challenges for organic–inorganic hybrid perovskite solar cells (PSCs). With the incorporation of black phosphorus (BP), well known for self‐healing and its superior property to regulate charge recombination, into CH3NH3PbI3perovskites (MAPbI3/BP), the associated PSCs exhibit significant enhancement in photostability in addition to the photovoltaic (PV) performance. The MAPbI3/BP‐based PSCs retain ≈94% of initial efficiency after 1000 h continuous white light LED illumination in a dry N2glovebox whereas their counterparts without the incorporation of BP decrease to ≈30%. Although BP has very small influence on the morphology and structure of the perovskite crystals, Pb0defects are effectively inhibited and hot carrier recombination is found to be retarded as confirmed by femtosecond optical spectroscopy. The utilization of the material to simultaneously inhibit Pb0defect formation and retard charge recombination, such as BP, is a promising strategy to enhance the photostability of organic–inorganic hybrid perovskite‐based PSCs and their siblings.