紫外线-臭氧处理对过氧化物太阳能电池中 KCl 夹层的影响

IF 1.7 4区 化学
Na-Yeon Jo, Yun-Kyeong Hong, Sanghee Yang, Hui-Seon Kim
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引用次数: 0

摘要

包晶体太阳能电池(PSC)的性能在很大程度上受包晶体层界面的影响。因此,为了提高 PSC 的性能,人们对包晶石层的界面工程给予了极大的关注。与此同时,KCl 是用于二氧化锡和包晶之间界面处理的常用分子之一。在本研究中,我们研究了紫外臭氧(UVO)处理 KCl 夹层对光伏性能的影响。采用经紫外臭氧处理的氯化钾的设备显示出更高的功率转换效率,这主要基于开路电压(VOC)的提高。紫外光电子能谱分析表明,紫外氧化物处理引起了界面能级的重新排列,是 VOC 增加的原因。相应地,阻抗光谱显示电荷重组电阻增加,这是由于二氧化锡和过氧化物界面上的重组受到了排列能级的抑制。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Effect of UV-ozone treatment for KCl interlayer in perovskite solar cells

Effect of UV-ozone treatment for KCl interlayer in perovskite solar cells

The performance of perovskite solar cells (PSCs) is significantly governed by the interface of perovskite layer. Therefore, a great deal of attention has been paid to the interface engineering of perovskite layer to improve the performance of PSC. In the meantime, KCl is one of the popular molecules being utilized for the interface treatment between SnO2 and perovskite. In this study, we investigate the effect of UV-ozone (UVO) treatment of KCl interlayer on the photovoltaic performance. A device employing UVO-treated KCl shows a higher power conversion efficiency mainly based on an increased open-circuit voltage (VOC). Ultraviolet photoelectron spectroscopy analysis indicates that the UVO treatment induces a rearrangement of energy level at the interface, being responsible for the increase in VOC. Accordingly, an increased charge recombination resistance is evidenced by impedance spectroscopy owing to the inhibited recombination at the SnO2 and perovskite interface by the aid of the aligned energy level.

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来源期刊
Bulletin of the Korean Chemical Society
Bulletin of the Korean Chemical Society Chemistry-General Chemistry
自引率
23.50%
发文量
182
期刊介绍: The Bulletin of the Korean Chemical Society is an official research journal of the Korean Chemical Society. It was founded in 1980 and reaches out to the chemical community worldwide. It is strictly peer-reviewed and welcomes Accounts, Communications, Articles, and Notes written in English. The scope of the journal covers all major areas of chemistry: analytical chemistry, electrochemistry, industrial chemistry, inorganic chemistry, life-science chemistry, macromolecular chemistry, organic synthesis, non-synthetic organic chemistry, physical chemistry, and materials chemistry.
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