{"title":"Surface-deprotonated ultra-small SnO2 quantum dots for high-performance perovskite solar cells","authors":"Wuchen Xiang, Yiheng Gao, Bobo Yuan, Shuping Xiao, Rui Wu, Yiran Wan, Zhiqiang Liu, Liang Ma, Xiang-Bai Chen, Weijun Ke, Guojia Fang, Pingli Qin","doi":"10.1039/d4ee03193h","DOIUrl":null,"url":null,"abstract":"SnO<small><sub>2</sub></small> electron transport layers (ETLs) have improved perovskite solar cell (PSC) efficiencies but face issues with surface protonation, leading to energy loss and instability. We developed ultra-small (2.5 nm) SnO<small><sub>2</sub></small> quantum dots (QDs) ETLs that are surface-deprotonated. These ETLs reduce interface barriers and enhance electron transfer efficiency. PSCs using these SnO<small><sub>2</sub></small> QDs achieved a champion efficiency of 25.55% and improved stability, outperforming protonated SnO<small><sub>2</sub></small> QDs. Additionally, these ETLs showed superior performance in X-ray detectors.","PeriodicalId":72,"journal":{"name":"Energy & Environmental Science","volume":null,"pages":null},"PeriodicalIF":32.4000,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Energy & Environmental Science","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1039/d4ee03193h","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
SnO2 electron transport layers (ETLs) have improved perovskite solar cell (PSC) efficiencies but face issues with surface protonation, leading to energy loss and instability. We developed ultra-small (2.5 nm) SnO2 quantum dots (QDs) ETLs that are surface-deprotonated. These ETLs reduce interface barriers and enhance electron transfer efficiency. PSCs using these SnO2 QDs achieved a champion efficiency of 25.55% and improved stability, outperforming protonated SnO2 QDs. Additionally, these ETLs showed superior performance in X-ray detectors.
期刊介绍：
Energy & Environmental Science, a peer-reviewed scientific journal, publishes original research and review articles covering interdisciplinary topics in the (bio)chemical and (bio)physical sciences, as well as chemical engineering disciplines. Published monthly by the Royal Society of Chemistry (RSC), a not-for-profit publisher, Energy & Environmental Science is recognized as a leading journal. It boasts an impressive impact factor of 8.500 as of 2009, ranking 8th among 140 journals in the category "Chemistry, Multidisciplinary," second among 71 journals in "Energy & Fuels," second among 128 journals in "Engineering, Chemical," and first among 181 scientific journals in "Environmental Sciences."
Energy & Environmental Science publishes various types of articles, including Research Papers (original scientific work), Review Articles, Perspectives, and Minireviews (feature review-type articles of broad interest), Communications (original scientific work of an urgent nature), Opinions (personal, often speculative viewpoints or hypotheses on current topics), and Analysis Articles (in-depth examination of energy-related issues).
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