High-Performance Planar-Heterojunction Solar Cells Based on Ternary Halide Large-Band-Gap Perovskites
High-Performance Planar-Heterojunction Solar Cells Based on Ternary Halide Large-Band-Gap Perovskites
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DOI：
10.1002/aenm.201400960
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发表时间：
2015-01-07
影响因子：
27.8
通讯作者：
Jen, Alex K. -Y.
中科院分区：
文献类型：
--
作者：
Liang, Po-Wei;Chueh, Chu-Chen;Jen, Alex K. -Y.
展示了基于大带隙（1.70-1.83 eV）钙钛矿的高性能平面异质结（PHJ）太阳能电池。通过将 Cl- 掺入 MAPb(I1-YBrY)3 中，溶液处理的钙钛矿薄膜的结晶度和均匀性得到很大改善，从而导致载流子扩散长度从约 160 nm 增加到约 700-800 nm。这一增强使低温溶液处理的 PHJ 器件的功率转换效率 (PCE) 达到 10%。
High-performance planar-heterojunction (PHJ) solar cells based on large band-gap (1.70-1.83 eV) perovskites are demonstrated. By incorporating Cl- into the MAPb(I1-YBrY)3, the crystallinity and homogeneity of the solution-processed perovskite thin films are much improved, which results in an increased charge carrier diffusion length from approximate to 160 nm to approximate to 700-800 nm. This enhancement leads to a high power conversion efficiency (PCE) of 10% in the low-temperature solution-processed PHJ devices.