{"title":"Improvements in Photoluminescence Efficiency and Stability of CsPbBr3 Nanocrystals Through 3-Aminopropyltriethoxysilane Treatment","authors":"Seung-Beom Cho, Min-Jae Kim, Il-Kyu Park","doi":"10.1007/s11814-024-00252-9","DOIUrl":null,"url":null,"abstract":"<p>A representative metal halide perovskite, CsPbX<sub>3</sub>, has received much attention for its high photoluminescence (PL) efficiency and broad emission spectral range covering ultraviolet to infrared. Even with the focused investigations, they still suffer from poor emission stability from surface-induced defects. The inherent instability of perovskites is caused by moisture in the ambient, which leads to a reduction in the luminescence efficiency and deterioration of emission stability. In this study, we report a method to annihilate the surface defects in CsPbBr<sub>3</sub> nanocrystals (NCs), which enhances their photoluminescence efficiency by forming a SiO<sub>x</sub> shell structure using a 3-aminopropyltriethoxysilane (APTES). The APTES was treated during the synthesis of CsPbBr<sub>3</sub> NCs through supersaturation and re-precipitation processes. The optical investigations confirmed that the PL intensity and emission stability of the CsPbBr<sub>3</sub> NCs improved with the APTES treatment. The structural investigations using X-ray diffraction and transmission electron microscopy showed that optical analysis was carried out through photoluminescence and laser optical analysis using lasers at 400 nm and 365 nm wavelengths. These findings present an innovative solution to the instability issues of CsPbBr<sub>3</sub> and suggest possibilities for its utilization in various application fields. Future research should focus on further understanding the scalability of this method and its practical applicability.</p>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":null,"pages":null},"PeriodicalIF":2.9000,"publicationDate":"2024-08-12","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://doi.org/10.1007/s11814-024-00252-9","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
A representative metal halide perovskite, CsPbX3, has received much attention for its high photoluminescence (PL) efficiency and broad emission spectral range covering ultraviolet to infrared. Even with the focused investigations, they still suffer from poor emission stability from surface-induced defects. The inherent instability of perovskites is caused by moisture in the ambient, which leads to a reduction in the luminescence efficiency and deterioration of emission stability. In this study, we report a method to annihilate the surface defects in CsPbBr3 nanocrystals (NCs), which enhances their photoluminescence efficiency by forming a SiOx shell structure using a 3-aminopropyltriethoxysilane (APTES). The APTES was treated during the synthesis of CsPbBr3 NCs through supersaturation and re-precipitation processes. The optical investigations confirmed that the PL intensity and emission stability of the CsPbBr3 NCs improved with the APTES treatment. The structural investigations using X-ray diffraction and transmission electron microscopy showed that optical analysis was carried out through photoluminescence and laser optical analysis using lasers at 400 nm and 365 nm wavelengths. These findings present an innovative solution to the instability issues of CsPbBr3 and suggest possibilities for its utilization in various application fields. Future research should focus on further understanding the scalability of this method and its practical applicability.
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.