Synergistic enhancement of Cs and Br doping in formamidinium lead halide perovskites for high performance optoelectronics
文献类型：期刊论文
| 作者 | Liu, Yucheng1; Zhang, Yunxia1; Yang, Zhou1; Hu, Mingxin1; Liu, Shengzhong (Frank)1,2; Li, Qingxian1 |
| 刊名 | CRYSTENGCOMM
 |
| 出版日期 | 2018-10-07 |
| 卷号 | 20期号:37页码:5510-5518 |
| ISSN号 | 1466-8033 |
| DOI | 10.1039/c8ce00916c |
| 通讯作者 | Zhang, Yunxia(zyang@snnu.edu.cn) ; Liu, Shengzhong (Frank)(szliu@dicp.ac.cn) |
| 英文摘要 | Among the various developed perovskite materials, HC(NH2)(2)PbI3 (FAPbI(3)) is considered one of the best photovoltaic materials due to its high thermal stability and smaller band gap for light harvesting over a broader spectrum. However, the relatively large size of HC(NH2)(2)(+) (FA) makes HC(NH2)(2)PbI3 prone to a phase transition from its black phase to the yellow phase at room temperature. Reduction of the effective ion size by doping with smaller ions is an effective way to stabilize black-phase FAPbI(3). However, the effect of dopants on the optoelectronic properties of doped formamidinium lead halide perovskites has rarely been investigated. In this work, we prepared Cs-, Br- and Cs-Br co-doped FAPbI(3) single-crystal materials with doping concentrations of 5%, 10% and 15%. The impacts of dopants on the phase stability, trap state density, carrier lifetime and carrier mobility are thoroughly investigated. It is found that Cs doping is not effective at stabilizing the black phase, while Br is a good stabilizer at concentrations exceeding 6.7%. Furthermore, the Cs and Br co-doped samples could be synergistically enhanced for high performance optoelectronics and show not only better stability but also much improved carrier lifetimes of 1.23 mu s and carrier mobilities of 427.3 cm(2) V-1 s(-1), which resulted in a longer carrier diffusion length of approximately 30 mu m as well as a photodetector with a high responsivity of 0.64 A/W. |
| WOS关键词 | SINGLE-CRYSTALS ; IODIDE ; METHYLAMMONIUM ; DIFFUSION ; PHASE ; CRYSTALLIZATION ; STABILIZATION ; DEGRADATION ; GROWTH ; CATION |
| 资助项目 | National Key Research and Development Program of China[2017YFA0204800/2016YFA0202403] ; National Natural Science Foundation of China[61604091] ; National Natural Science Foundation of China[91733301] ; National Natural Science Foundation of China[61674098] ; 111 Project[B14041] ; Changjiang Scholar and Innovative Research Team[IRT_14R33] ; Chinese National 1000 Talents Plan program[1110010341] |
| WOS研究方向 | Chemistry ; Crystallography |
| 语种 | 英语 |
| 出版者 | ROYAL SOC CHEMISTRY |
| WOS记录号 | WOS:000451163700005 |
| 资助机构 | National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; 111 Project ; 111 Project ; Changjiang Scholar and Innovative Research Team ; Changjiang Scholar and Innovative Research Team ; Chinese National 1000 Talents Plan program ; Chinese National 1000 Talents Plan program ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; 111 Project ; 111 Project ; Changjiang Scholar and Innovative Research Team ; Changjiang Scholar and Innovative Research Team ; Chinese National 1000 Talents Plan program ; Chinese National 1000 Talents Plan program ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; 111 Project ; 111 Project ; Changjiang Scholar and Innovative Research Team ; Changjiang Scholar and Innovative Research Team ; Chinese National 1000 Talents Plan program ; Chinese National 1000 Talents Plan program ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; 111 Project ; 111 Project ; Changjiang Scholar and Innovative Research Team ; Changjiang Scholar and Innovative Research Team ; Chinese National 1000 Talents Plan program ; Chinese National 1000 Talents Plan program |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/166534]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 通讯作者 | Zhang, Yunxia; Liu, Shengzhong (Frank) |
| 作者单位 | 1.Shaanxi Normal Univ, Inst Adv Energy Mat,Shaanxi Key Lab Adv Energy De, Sch Mat Sci & Engn,Key Lab Appl Surface & Colloid, Shaanxi Engn Lab Adv Energy Technol,Minist Educ, Xian 710119, Shaanxi, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, IChEM, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Yucheng,Zhang, Yunxia,Yang, Zhou,et al. Synergistic enhancement of Cs and Br doping in formamidinium lead halide perovskites for high performance optoelectronics[J]. CRYSTENGCOMM,2018,20(37):5510-5518. |
| APA | Liu, Yucheng,Zhang, Yunxia,Yang, Zhou,Hu, Mingxin,Liu, Shengzhong ,&Li, Qingxian.(2018).Synergistic enhancement of Cs and Br doping in formamidinium lead halide perovskites for high performance optoelectronics.CRYSTENGCOMM,20(37),5510-5518. |
| MLA | Liu, Yucheng,et al."Synergistic enhancement of Cs and Br doping in formamidinium lead halide perovskites for high performance optoelectronics".CRYSTENGCOMM 20.37(2018):5510-5518. |
入库方式： OAI收割
来源：大连化学物理研究所
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