材料科学
钙钛矿(结构)
兴奋剂
铟
金属
能量转换效率
吸收(声学)
波长
激发
光电子学
结晶学
冶金
电气工程
工程类
复合材料
化学
作者
Mengru Li,Debin Xia,Yang Yang,Xi Du,Guohua Dong,Aifeng Jiang
标识
DOI:10.1002/aenm.201702052
摘要
Abstract Perovskite solar cells (PSCs) have gained a promising position during the past few years. However, as far as it goes, there is rare combination of the merits of metal–organic framework with PSCs. In this work, a 3D metal–organic framework, namely, [In 2 (phen) 3 Cl 6 ]·CH 3 CN·2H 2 O (In2) is first introduced into hole transport material of PSCs through band alignment engineering. By this facile strategy, the pinholes in the hole transport layer are effectively reduced, and the migration of Au into the entire PSC structure can be alleviated simultaneously. Meanwhile, In2 also plays a role in enhancing the light absorption of perovskite, which is due to: (1) the large particles of In2 acting as light scattering centers; (2) the emission wavelength of In2 is almost the same as the excitation wavelength of perovskite. Consequently, short‐current density ( J sc ), open circuit voltage ( V oc ), and fill factor (FF) gain a significant increase from 19.53 to 21.03 mA cm −2 , 0.98 to 1.01 V, and 0.67 to 0.74, respectively. Thereby, the power conversion efficiency is remarkably enhanced from 12.8% to 15.8%. In the end, the stability of PSCs should also be improved.
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