Pressure dependence of excited-state charge-carrier dynamics in organolead tribromide perovskites
Pressure dependence of excited-state charge-carrier dynamics in organolead tribromide perovskites
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有机铅三溴化物钙钛矿中激发态载流子动力学的压力依赖性
DOI：
10.1063/1.5030588
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发表时间：
2018-05
影响因子：
4
通讯作者：
Ding D. J.
中科院分区：
文献类型：
--
作者：
Liu X. C.;Han J. H.;Zhao H. F.;Yan H. C.;Shi Y.;Jin M. X.;Liu C. L.;Ding D. J.
激发态载流子动力学控制着有机金属三卤化物钙钛矿（OTPs）的性能，并受晶体结构的强烈影响。表征高压下OTPs的激发态载流子动力学对于提供结构-性质关系的关键见解是必不可少的。本文通过原位高压飞秒瞬态吸收光谱实验，研究了CH3NH3PbBr3 （MAPbBr3）在静水压力下的激发态载流子动力学。结果表明，压缩是调节MAPbBr3载流子动态的有效方法。在每个压力诱导相中，载流子弛豫、声子散射和俄歇复合在压缩下表现出不同的压力依赖特性。响应性归因于压力引起的晶格结构的变化，这也改变了电子能带结构。具体而言，在环境相中实现了载流子弛豫和俄歇复合的同时延长，这对多余能量的收集非常有价值。我们的讨论为优化otp的光伏性能提供了线索。激发态载流子动力学控制着有机金属三卤化物钙钛矿（OTPs）的性能，并受晶体结构的强烈影响。表征高压下OTPs的激发态载流子动力学对于提供结构-性质关系的关键见解是必不可少的。本文通过原位高压飞秒瞬态吸收光谱实验，研究了CH3NH3PbBr3 （MAPbBr3）在静水压力下的激发态载流子动力学。结果表明，压缩是调节MAPbBr3载流子动态的有效方法。在每个压力诱导相中，载流子弛豫、声子散射和俄歇复合在压缩下表现出不同的压力依赖特性。响应性归因于压力引起的晶格结构的变化，这也改变了电子能带结构。具体来说，载流子弛豫和俄歇复合的同时延长是…
Excited-state charge-carrier dynamics governs the performance of organometal trihalide perovskites (OTPs) and is strongly influenced by the crystal structure. Characterizing the excited-state charge-carrier dynamics in OTPs under high pressure is imperative for providing crucial insights into structure-property relations. Here, we conduct in situ high-pressure femtosecond transient absorption spectroscopy experiments to study the excited-state carrier dynamics of CH3NH3PbBr3 (MAPbBr3) under hydrostatic pressure. The results indicate that compression is an effective approach to modulate the carrier dynamics of MAPbBr3. Across each pressure-induced phase, carrier relaxation, phonon scattering, and Auger recombination present different pressure-dependent properties under compression. Responsiveness is attributed to the pressure-induced variation in the lattice structure, which also changes the electronic band structure. Specifically, simultaneous prolongation of carrier relaxation and Auger recombination is achieved in the ambient phase, which is very valuable for excess energy harvesting. Our discussion provides clues for optimizing the photovoltaic performance of OTPs.Excited-state charge-carrier dynamics governs the performance of organometal trihalide perovskites (OTPs) and is strongly influenced by the crystal structure. Characterizing the excited-state charge-carrier dynamics in OTPs under high pressure is imperative for providing crucial insights into structure-property relations. Here, we conduct in situ high-pressure femtosecond transient absorption spectroscopy experiments to study the excited-state carrier dynamics of CH3NH3PbBr3 (MAPbBr3) under hydrostatic pressure. The results indicate that compression is an effective approach to modulate the carrier dynamics of MAPbBr3. Across each pressure-induced phase, carrier relaxation, phonon scattering, and Auger recombination present different pressure-dependent properties under compression. Responsiveness is attributed to the pressure-induced variation in the lattice structure, which also changes the electronic band structure. Specifically, simultaneous prolongation of carrier relaxation and Auger recombination is ...
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DOI：
10.1021/acs.jpclett.7b00520
发表时间：
2017-05
期刊：
The journal of physical chemistry letters
影响因子：
--
作者：
M. Szafrański;A. Katrusiak
通讯作者：
M. Szafrański;A. Katrusiak
DOI：
10.1021/acs.jpclett.7b01022
发表时间：
2017-06
期刊：
The journal of physical chemistry letters
影响因子：
--
作者：
Huacai Yan;Tianji Ou;Hui Jiao;Tianyi Wang;Qinglin Wang;Cailong Liu;Xizhe Liu;Yonghao Han;
通讯作者：
Huacai Yan;Tianji Ou;Hui Jiao;Tianyi Wang;Qinglin Wang;Cailong Liu;Xizhe Liu;Yonghao Han;
DOI：
10.1088/0022-3719/16/21/017
发表时间：
1983-01-01
期刊：
JOURNAL OF PHYSICS C-SOLID STATE PHYSICS
影响因子：
--
作者：
HAUG, A
通讯作者：
HAUG, A
DOI：
10.1073/pnas.1609030113
发表时间：
2016-08-09
影响因子：
11.1
作者：
Kong, Lingping;Liu, Gang;Mao, Ho-kwang
通讯作者：
Mao, Ho-kwang
影响因子：
9.5
作者：
Fengying Zhang;Bin Yang;Xin Mao;Ruixia Yang;Lei Jiang;Yajuan Li;J. Xiong;Yang Yang-Yang;Rongxing He;Weiqiao Deng;Ke-li Han
通讯作者：
Fengying Zhang;Bin Yang;Xin Mao;Ruixia Yang;Lei Jiang;Yajuan Li;J. Xiong;Yang Yang-Yang;Rongxing He;Weiqiao Deng;Ke-li Han