文献详情
Charge carrier recombination dynamics in a bi-cationic perovskite solar cell
文献类型：期刊
通讯作者：Qin, YJ; Ai, XC (reprint author), Renmin Univ China, Dept Chem, Beijing 100872, Peoples R China.
期刊名称：PHYSICAL CHEMISTRY CHEMICAL PHYSICS影响因子和分区
年：2019
卷：21
期：10
页码：5409-5415
ISSN：1463-9076
所属部门：化学系
摘要：The compositional engineering is of great importance to tune the electrical and optical properties of perovskite and improve the photovoltaic performance of perovskite solar cells. The exploration of the corresponding photoelectric conversion processes, especially the carrier recombination dynamics, will contribute to the optimization of the devices. In this work, perovskite with mixed methylammonium (MA) and formamidinium (FA) as organic cations, MA(0.4)FA(0.6)PbI(3), is fabricated to study the ...More
The compositional engineering is of great importance to tune the electrical and optical properties of perovskite and improve the photovoltaic performance of perovskite solar cells. The exploration of the corresponding photoelectric conversion processes, especially the carrier recombination dynamics, will contribute to the optimization of the devices. In this work, perovskite with mixed methylammonium (MA) and formamidinium (FA) as organic cations, MA(0.4)FA(0.6)PbI(3), is fabricated to study the influence of the bi-cation on the charge carrier recombination dynamics. X-ray diffraction analysis indicates the existence of the MAPbI(3)-FAPbI(3) phase segregation in the bi-cationic perovskite crystal. The time-resolved photoluminescence dynamics presents a relatively fast carrier recombination process ascribed to the charge transfer from MAPbI(3) to FAPbI(3) in the bi-cationic perovskite film. The carrier recombination dynamics investigated by transient photovoltage measurements reveals a biphasic trap-assisted carrier recombination mechanism in the bi-cationic device, which involves carrier recombination in the MAPbI(3) phase and FAPbI(3) phase, respectively. The ultimate presentation of the carrier recombination process is closely related to the charge transfer between the two perovskite phases. ...Hide

DOI：10.1039/c8cp07461e
百度学术：Charge carrier recombination dynamics in a bi-cationic perovskite solar cell
语言：外文
被引频次：1
人气指数：1
浏览次数：1
基金：National Natural Science Foundation of ChinaNational Natural Science Foundation of China [21473250, 21773305]; National Key R&D Program of China [2018YFA0208701]; China Postdoc Innovation Talent Support Program [BX20180352]
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