金属卤化物钙钛矿中的离子迁移

IF 2.2 4区工程技术 Q3 ELECTROCHEMISTRY

Journal of electrochemical science and technology Pub Date : 2021-07-16 DOI:10.33961/JECST.2021.00136

Anafi Nur’aini, Seokwon Lee, I. Oh

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引用次数: 1

摘要

金属卤化物钙钛矿是很有前途的光伏材料，但仍有一些问题需要解决。滞后是一种与离子迁移密切相关的现象;因此，需要一种快速、简便、低温的方法来测量离子迁移。通过选择性阻断，除了电子迁移外，离子迁移可以单独测量。在这项研究中，离子迁移在金属卤化物钙钛矿测量使用垂直装置。在不同温度下，获得了一系列钙钛矿成分(如mapbi3、fapbi3、cspbi3和mapbbr3)的离子活化能。通过将测量的离子活化能与理论值进行比较，我们得出结论，在其他可能性中，I -是MAPbI 3、FAPbI 3、CsPbI 3中的迁移离子，Br -是MAPbBr 3中的迁移离子。

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Ion Migration in Metal Halide Perovskites

Metal halide perovskites are promising photovoltaic materials, but they still have some issues that need to be solved. Hysteresis is a phenomenon that strongly is correlated with ion migration; thus, a fast, easy, and low-temperature method for measuring ion migration is required. Through selective blocking, ion migration can be measured separately, apart from electron migration. In this study, ion migration in metal halide perovskites was measured using a vertical device. At different temperatures, ionic activation energies were obtained for a range of perovskite compositions such as MAPbI 3 , FAPbI 3 , CsPbI 3 , and MAPbBr 3 . By comparing the measured ionic activation energies with the theoretical values, we conclude that among other possibilities, I - is the migrating ion in MAPbI 3 , FAPbI 3 , CsPbI 3, and Br - is the migrating in MAPbBr 3 .

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来源期刊

Journal of electrochemical science and technology ELECTROCHEMISTRY-

CiteScore

6.30

自引率

8.10%

发文量

期刊介绍： Covering fields: - Batteries and Energy Storage - Biological Electrochemistry - Corrosion Science and Technology - Electroanalytical Chemistry and Sensor Technology - Electrocatalysis - Electrochemical Capacitors & Supercapcitors - Electrochemical Engineering - Electrodeposition and Surface Treatment - Environmental Science and Technology - Fuel Cells - Material Electrochemistry - Molecular Electrochemistry and Organic Electrochemistry - Physical Electrochemistry - Solar Energy Conversion and Photoelectrochemistry