CuSCN modified PEDOT:PSS to improve the efficiency of low temperature processed perovskite solar cells
CuSCN modified PEDOT:PSS to improve the efficiency of low temperature processed perovskite solar cells
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DOI：
10.1016/j.orgel.2018.05.033
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发表时间：
2018-10-01
影响因子：
3.2
通讯作者：
Zhu, Yuejin
中科院分区：
文献类型：
--
作者：
Xiong, Qi;Tian, Hui;Zhu, Yuejin
PEDOT：PSS的能量结构限制了基于倒置FTO/ PEDOT：PSS/钙钛矿/PCBM结构的钙钛矿太阳能电池（PSC）性能。本文采用低温旋涂法将无机CuSCN改性到PEDOT：PSS上，使其与PSC的低温制备相兼容。由于CuSCN的透明性和CuSCN/PEDOT：PSS衬底上钙钛矿膜的良好结晶性，改性CuSCN保证了钙钛矿层的光捕获。此外，CuSCN有效地改变了PEDOT：PSS的能态，减少了电荷传输过程中的能量损失，同时促进了电荷转移。基于改善的电荷传输和降低的能量损失，基于CuSCN/PEDOT：PSS的PSC的光伏性能达到10.9%的优化效率，远优于基于PEDOT：PSS的对照器件的9.1%的性能（AM 1.5，1 sun）。
The energy structure of PEDOT:PSS limits the perovskite solar cell (PSC) performance based on inverted FTO/ PEDOT:PSS/perovskite/PCBM structure. Here, inorganic CuSCN is modified on PEDOT:PSS using spin-coating method under low temperature, which is compatible with the low temperature fabrication of PSC. Modification CuSCN guarantees the light harvesting of perovskite layer because of the transparency of CuSCN and good crystalline of perovskite film on CuSCN/PEDOT:PSS substrate. Furthermore, CuSCN effectively changes the energy states of PEDOT:PSS to decrease the energy loss during charge transport, promoting the charge transfer at the same time. Based on the improved charge transport and reduced energy loss, the photovoltaic property of PSC based on CuSCN/PEDOT:PSS reaches the optimized efficiency of 10.9%, much better than the control PEDOT:PSS-based device with 9.1% performance (AM1.5, 1sun).