Rational alloying of secondary and aromatic ammonium cations in a metal-halide perovskite toward crystal-array photodetection

作     者：Wuqian Guo Huaixi Chen Xitao Liu Yu Ma Jiaqi Wang Yi Liu Shiguo Han Haojie Xu Junhua Luo Zhihua Sun 郭吴倩;陈怀熹;刘希涛;马钰;王家棋;刘艺;韩世国;徐豪杰;罗军华;孙志华

作者机构：Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China University of Chinese Academy of SciencesChinese Academy of SciencesBeijing 100039China Fujian Science&Technology Innovation Laboratory for Optoelectronic Information of ChinaFuzhou 350108China 

基　　金：supported by the National Natural Science Foundation of China(21875251,21833010,21525104,22075285 and 21921001) the Key Research Program of Frontier Sciences of the Chinese Academy of Sciences(ZDBS-LY-SLH024) Fujian Science&Technology Innovation Laboratory for Optoelectronic Information of China(2021ZR126) the Natural Science Foundation of Fujian Province(2018H0047 and 2020J01112) the Strategic Priority Research Program of the Chinese Academy of Sciences(XDB20010200) the Youth Innovation Promotion of the Chinese Academy of Sciences(2019301 and 2020307) 

出 版 物：《Science China Materials》 (中国科学（材料科学（英文版）)

年 卷 期：2022年第65卷第1期

页      码：179-185页

摘      要：Two-dimensional(2D)hybrid perovskites with the Ruddlesden-Popper lattice(A )_(2)(A)_(n-1)M_(n)X_(3n+1)are emerging as the promising optoelectronic candidates,both the inorganic and organic ingredients of which can be tailored to modulate the physical ***,there is a scarcity of 2D multilayered motifs with the A-site large-size cations occupying perovskite ***,by rational mixedcation alloying,we present a new 2D hybrid perovskite,(4-TFBMA)_(2)(DMA)Pb_(2)I_(7)(1),in which the secondary cation of CH_(3)NH_(2)CH_(3)^(+)(DMA)is located inside the perovskite cage while the aromatic 4-(trifluoromethyl)benzylammonium(4-TFBMA)cation acts as a spacer *** from the quantum structure of alternating organic spacers and inorganic networks,crystal-array detectors of 1 show fascinating in-plane photodetection responses of large detectivity(~2.95×10^(12)Jones)and responsivity(~1.97AW^(-1)),comparable to those of some inorganic 2D *** addition,a fast response rate(~264μs)and a low dark current are also realized,related to the high crystalline quality and suppression of the hopping barrier due to the insulating organic spacing *** result sheds light on the further exploration of new 2D hybrid perovskites toward high-performance photodetector applications.

主 题 词：two-dimensional hybrid perovskites photodetection array 

学科分类：08[工学] 080501[080501] 0805[工学-能源动力学] 0803[工学-仪器类] 

核心收录：

D　O　I：10.1007/s40843-021-1709-9

馆 藏 号：203104272...