{"title":"One pot synthesis of heterostructure CsPbBr3/PdSe nanowires with excellent humidity stability","authors":"Shuai Ye, Mingyi Huang, Jun Song, Junle Qu","doi":"10.1039/d4nr03554b","DOIUrl":null,"url":null,"abstract":"Lead halide perovskite nanowires (NWs) have garnered increasing attention owing to their unique properties, including axial carrier transportation, low pumping thresholds, and polarized emission. However, their intrinsic instability significantly limits their applications. In this study, heterostructured CsPbBr3/PbSe NWs of diameter 10 nm and lengths ranging from several to tens of microns, were successfully synthesized via a one-pot solution-phase process. Photoluminescence measurements revealed that the CsPbBr3/PbSe NWs emitted green fluorescence with a narrow width of 16 nm and a high photoluminescence quantum yield (PLQY) of 37.6%. The obtained CsPbBr3/PbSe NWs underwent anion exchange with I- ions precursor to transform into CsPbBr3-xIx/PbSe, but not with Cl- ions precursor. Remarkably, these heterostructured CsPbBr3/PbSe NWs remained stable when immersed in water or exposed to air for several months, demonstrating excellent humidity stability. This study offers an effective approach for preparing stable CsPbBr3 NWs and fosters their future applications in optoelectronic devices.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":null,"pages":null},"PeriodicalIF":5.8000,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nanoscale","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1039/d4nr03554b","RegionNum":3,"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
Lead halide perovskite nanowires (NWs) have garnered increasing attention owing to their unique properties, including axial carrier transportation, low pumping thresholds, and polarized emission. However, their intrinsic instability significantly limits their applications. In this study, heterostructured CsPbBr3/PbSe NWs of diameter 10 nm and lengths ranging from several to tens of microns, were successfully synthesized via a one-pot solution-phase process. Photoluminescence measurements revealed that the CsPbBr3/PbSe NWs emitted green fluorescence with a narrow width of 16 nm and a high photoluminescence quantum yield (PLQY) of 37.6%. The obtained CsPbBr3/PbSe NWs underwent anion exchange with I- ions precursor to transform into CsPbBr3-xIx/PbSe, but not with Cl- ions precursor. Remarkably, these heterostructured CsPbBr3/PbSe NWs remained stable when immersed in water or exposed to air for several months, demonstrating excellent humidity stability. This study offers an effective approach for preparing stable CsPbBr3 NWs and fosters their future applications in optoelectronic devices.
期刊介绍:
Nanoscale is a high-impact international journal, publishing high-quality research across nanoscience and nanotechnology. Nanoscale publishes a full mix of research articles on experimental and theoretical work, including reviews, communications, and full papers.Highly interdisciplinary, this journal appeals to scientists, researchers and professionals interested in nanoscience and nanotechnology, quantum materials and quantum technology, including the areas of physics, chemistry, biology, medicine, materials, energy/environment, information technology, detection science, healthcare and drug discovery, and electronics.