In Choi, Bonkee Koo, Subin Yu, Wooyeon Kim, Min Jae Ko
{"title":"Enhanced Photovoltaic Performance of Inverted Perovskite Solar Cells Employing a Cerium Oxide Passivation Layer","authors":"In Choi, Bonkee Koo, Subin Yu, Wooyeon Kim, Min Jae Ko","doi":"10.1007/s11814-024-00333-9","DOIUrl":null,"url":null,"abstract":"<div><p>Metal halide perovskite solar cells (PSCs) have achieved a power conversion efficiency (PCE) of 26.7%, establishing them as strong candidates for next-generation solar cell technology owing to their unique optoelectronic properties and solution processability. However, defects at grain boundaries and interfaces within the perovskite layer limit both stability and performance. Therefore, this study aims to mitigate these challenges by introducing a thin layer of amorphous cerium oxide (CeO<sub>x</sub>) as an inorganic passivation layer, offering advantages over conventional organic passivation layers. A thin amorphous CeO<sub>x</sub> passivation layer enhances the built-in electric field in the perovskite, improving charge transfer without the increased resistance of thick layers generally used as electron transport layers (ETLs). This approach yielded an inverted PSC with a PCE of 19.30%, securing high performance with photostability. This result highlights the potential of thin CeO<sub>x</sub> passivation to enhance the efficiency and stability of PSCs.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"41 14","pages":"3813 - 3820"},"PeriodicalIF":2.9000,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Korean Journal of Chemical Engineering","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s11814-024-00333-9","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Metal halide perovskite solar cells (PSCs) have achieved a power conversion efficiency (PCE) of 26.7%, establishing them as strong candidates for next-generation solar cell technology owing to their unique optoelectronic properties and solution processability. However, defects at grain boundaries and interfaces within the perovskite layer limit both stability and performance. Therefore, this study aims to mitigate these challenges by introducing a thin layer of amorphous cerium oxide (CeOx) as an inorganic passivation layer, offering advantages over conventional organic passivation layers. A thin amorphous CeOx passivation layer enhances the built-in electric field in the perovskite, improving charge transfer without the increased resistance of thick layers generally used as electron transport layers (ETLs). This approach yielded an inverted PSC with a PCE of 19.30%, securing high performance with photostability. This result highlights the potential of thin CeOx passivation to enhance the efficiency and stability of PSCs.
期刊介绍:
The Korean Journal of Chemical Engineering provides a global forum for the dissemination of research in chemical engineering. The Journal publishes significant research results obtained in the Asia-Pacific region, and simultaneously introduces recent technical progress made in other areas of the world to this region. Submitted research papers must be of potential industrial significance and specifically concerned with chemical engineering. The editors will give preference to papers having a clearly stated practical scope and applicability in the areas of chemical engineering, and to those where new theoretical concepts are supported by new experimental details. The Journal also regularly publishes featured reviews on emerging and industrially important subjects of chemical engineering as well as selected papers presented at international conferences on the subjects.