EA-Directing Formamidinium-Based Perovskite Microwires with A-Site Doping

Xu，Shan1,3,4; Ding，Xue1; Shi，Huafeng2; Zhang，Xinhai2; Sun，Xiaowei2; Ji，Ning3; Zhang，Xiaoli1; Zhang，Zhaoyu1

2021

10.1021/acsomega.1c00213

ACS Omega   影响因子和分区

2470-1343

2470-1343

One recent development to improve optoelectronic properties of perovskites is to use a larger cation for multication engineering. The chain-like ethylammonium (EA) [(C2H5)NH3]+ cation is more likely to form a one-dimensional perovskite structure; however, there is no remarkable evidence in this connection. Therefore, in this work, for the first time, the EA cation as an alternative cation was introduced into FAPbBr3 cubic crystals to explore the stabilities and optoelectronic properties of mixed FAxEA(1-x)PbBr3 perovskites. The results indicate that replacing FA with EA is a more effective way to realize band gap tuning and morphology transformation between the cubic shape and microwires. The tuned band gap of perovskite is due to the variation of Pb-Br-Pb angles induced by the insertion of the larger EA cation. We highlight that this work provides new physical insights into the correlation between the engineering of organic cations and the formation of perovskite microwires and the tunable band gap. This observation will help us to find new ways to grow perovskite microwires and subsequently study the optoelectronic performance of low-dimensional perovskites devices.

SCI

英语

其他

Guangdong International Science and Technology Cooperation Project[2019A050510002] ; Shenzhen Basic Research Fund["JCYJ20170817112012493","JCYJ20150929170644623"] ; National Natural Science Foundation of China[11604026] ; Shenzhen Key Laboratory Project[ZDSYS201603311644527] ; President's Fund[PF01000154] ; Special Fund for Applications, Science and Technology Planning Projects of Guangdong Province of China[2017B010127002] ; Open Fund of Guangdong Provincial Key Laboratory of Information Photonics Technology (Guangdong University of Technology)[GKPT20-09]

Chemistry

Chemistry, Multidisciplinary

WOS:000631101200067

AMER CHEMICAL SOC

2-s2.0-85103498757

Scopus

1.School of Science and Engineering and Shenzhen Key Lab of Semiconductor Lasers,Chinese University of Hong Kong,Shenzhen, Guangdong,518172,China
2.Southern University of Science and Technology,Shenzhen, Guangdong,518055,China
3.School of Physics and Optoelectronic Engineering,Yangtze University,Jingzhou, Hubei,434023,China
4.Department of Optics and Optical Engineering,University of Science and Technology of China,Hefei, Anhui,230026,China

Xu，Shan,Ding，Xue,Shi，Huafeng,et al. EA-Directing Formamidinium-Based Perovskite Microwires with A-Site Doping[J]. ACS Omega,2021,6(10).

Xu，Shan.,Ding，Xue.,Shi，Huafeng.,Zhang，Xinhai.,Sun，Xiaowei.,...&Zhang，Zhaoyu.(2021).EA-Directing Formamidinium-Based Perovskite Microwires with A-Site Doping.ACS Omega,6(10).

Xu，Shan,et al."EA-Directing Formamidinium-Based Perovskite Microwires with A-Site Doping".ACS Omega 6.10(2021).