平面和介孔结构钙钛矿太阳能电池的光电特性

Photoelectric Properties of Planar and Mesoporous Structured Perovskite Solar Cells.

作者信息

Ašmontas Steponas, Čerškus Aurimas, Gradauskas Jonas, Grigucevičienė Asta, Juškėnas Remigijus, Leinartas Konstantinas, Lučun Andžej, Petrauskas Kazimieras, Selskis Algirdas, Staišiūnas Laurynas, Sužiedėlis Algirdas, Šilėnas Aldis, Širmulis Edmundas

机构信息

Center for Physical Sciences and Technology, Savanorių Ave. 231, LT-02300 Vilnius, Lithuania.

出版信息

Materials (Basel). 2022 Jun 17;15(12):4300. doi: 10.3390/ma15124300.

DOI:10.3390/ma15124300

PMID:35744358

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9230565/

Abstract

The high efficiency of perovskite solar cells strongly depends on the quality of perovskite films and carrier extraction layers. Here, we present the results of an investigation of the photoelectric properties of solar cells based on perovskite films grown on compact and mesoporous titanium dioxide layers. Kinetics of charge carrier transport and their extraction in triple-cation perovskite solar cells were studied by using transient photovoltage and time-resolved photoluminescence decay measurements. X-ray diffraction analysis revealed that the crystallinity of the perovskite films grown on mesoporous titanium dioxide is better compared to the films grown on compact TiO. Mesoporous structured perovskite solar cells are found to have higher power conversion efficiency mainly due to enlarged perovskite/mesoporous -TiO interfacial area and better crystallinity of their perovskite films.

摘要

钙钛矿太阳能电池的高效率很大程度上取决于钙钛矿薄膜和载流子提取层的质量。在此，我们展示了基于在致密和介孔二氧化钛层上生长的钙钛矿薄膜的太阳能电池光电性能的研究结果。通过瞬态光电压和时间分辨光致发光衰减测量，研究了三阳离子钙钛矿太阳能电池中电荷载流子的传输动力学及其提取过程。X射线衍射分析表明，与在致密二氧化钛上生长的薄膜相比，在介孔二氧化钛上生长的钙钛矿薄膜的结晶度更好。发现介孔结构的钙钛矿太阳能电池具有更高的功率转换效率，这主要归因于钙钛矿/介孔二氧化钛界面面积的增大及其钙钛矿薄膜更好的结晶度。