揭示热载流子对钙钛矿太阳能电池光电压形成的影响。
Unveiling the Influence of Hot Carriers on Photovoltage Formation in Perovskite Solar Cells.
作者信息
Mujahid Muhammad, Čerškus Aurimas, Gradauskas Jonas, Grigucevičienė Asta, Giraitis Raimondas, Leinartas Konstantinas, Lučun Andžej, Petrauskas Kazimieras, Selskis Algirdas, Sužiedėlis Algirdas, Šilėnas Aldis, Širmulis Edmundas, Ašmontas Steponas
机构信息
Laboratory of Electronic Processes, Center for Physical Sciences and Technology, Saulėtekio Ave. 3, LT-10257 Vilnius, Lithuania.
Department of Electrochemical Material Science, Center for Physical Sciences and Technology, Saulėtekio Ave. 3, LT-10257 Vilnius, Lithuania.
出版信息
Materials (Basel). 2024 Dec 28;18(1):85. doi: 10.3390/ma18010085.
The experimental and theoretical study of photovoltage formation in perovskite solar cells under pulsed laser excitation at 0.53 μm wavelength is presented. Two types of solar cells were fabricated on the base of cesium-containing triple cation perovskite films: (1) Cs(FAMA)Pb(IBr) and (2) Cs(FAMA)PbSn(IBr). It is found that photovoltage across the solar cells consists of two components, = + . The first one, , is the traditional photovoltage arising due to laser radiation-induced electron-hole pair generation. The second one, , is the fast component following the laser pulse and has a polarity opposite to that of . It is shown that the fast photovoltage component results from the laser radiation-caused heating of free carriers. The transient photovoltage measurements show that the values of the fast component are nearly the same in both types of perovskite solar cells. The magnitude of the traditional photovoltage of mixed Pb-Sn perovskite solar cells is lower than that of Pb-based cells.
本文介绍了在波长为0.53μm的脉冲激光激发下，钙钛矿太阳能电池中光电压形成的实验和理论研究。基于含铯三阳离子钙钛矿薄膜制备了两种类型的太阳能电池：（1）Cs(FAMA)Pb(IBr)和（2）Cs(FAMA)PbSn(IBr)。研究发现，太阳能电池两端的光电压由两个分量组成，(V = V_{tr} + V_{fast})。第一个分量(V_{tr})是由激光辐射诱导产生电子 - 空穴对而产生的传统光电压。第二个分量(V_{fast})是跟随激光脉冲的快速分量，其极性与(V_{tr})相反。结果表明，快速光电压分量是由激光辐射导致的自由载流子加热引起的。瞬态光电压测量表明，在两种类型的钙钛矿太阳能电池中，快速分量(V_{fast})的值几乎相同。混合Pb - Sn钙钛矿太阳能电池的传统光电压幅度低于基于Pb的电池。
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