{"title":"Octahedral Distortion-Induced Photoluminescence in Cs<sub>2</sub>NaIn<sub>x</sub>Bi<sub>1-x</sub>Cl<sub>6</sub> Halide Double Perovskites.","authors":"Poonam Sikarwar, Abhishek Anand, Aravind Kumar Chandiran","doi":"10.1002/cphc.202401036","DOIUrl":null,"url":null,"abstract":"<p><p>The halide perovskite materials have shown broadband light emission and there are multiple strategies to tweak the photoluminescence. Herein, a class of halide double perovskites Cs<sub>2</sub>NaIn<sub>x</sub>Bi<sub>1-x</sub>Cl<sub>6</sub> that are chemically tuned via trivalent cation engineering to introduce octahedral distortion is reported. This distortion leads to improved light emission properties where the photoluminescence quantum yield improves from <1% for a symmetric-octahedra containing parent compounds to >6.5% in distorted-octahedra containing mixed-trivalent compounds. Using structural and optical studies including Raman spectroscopy, far-infrared absorption, and steady-state photoluminescence, the role of octahedral distortion in improving light emission in halide double perovskites is demonstrated. In addition, to emphasize the role of distortion, electric bias is intentionally applied to symmetric-octahedra containing parent compounds, and their role in the emission properties is investigated.</p>","PeriodicalId":9819,"journal":{"name":"Chemphyschem","volume":" ","pages":"e2401036"},"PeriodicalIF":2.3000,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemphyschem","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1002/cphc.202401036","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
The halide perovskite materials have shown broadband light emission and there are multiple strategies to tweak the photoluminescence. Herein, a class of halide double perovskites Cs2NaInxBi1-xCl6 that are chemically tuned via trivalent cation engineering to introduce octahedral distortion is reported. This distortion leads to improved light emission properties where the photoluminescence quantum yield improves from <1% for a symmetric-octahedra containing parent compounds to >6.5% in distorted-octahedra containing mixed-trivalent compounds. Using structural and optical studies including Raman spectroscopy, far-infrared absorption, and steady-state photoluminescence, the role of octahedral distortion in improving light emission in halide double perovskites is demonstrated. In addition, to emphasize the role of distortion, electric bias is intentionally applied to symmetric-octahedra containing parent compounds, and their role in the emission properties is investigated.
期刊介绍：
ChemPhysChem is one of the leading chemistry/physics interdisciplinary journals (ISI Impact Factor 2018: 3.077) for physical chemistry and chemical physics. It is published on behalf of Chemistry Europe, an association of 16 European chemical societies.
ChemPhysChem is an international source for important primary and critical secondary information across the whole field of physical chemistry and chemical physics. It integrates this wide and flourishing field ranging from Solid State and Soft-Matter Research, Electro- and Photochemistry, Femtochemistry and Nanotechnology, Complex Systems, Single-Molecule Research, Clusters and Colloids, Catalysis and Surface Science, Biophysics and Physical Biochemistry, Atmospheric and Environmental Chemistry, and many more topics. ChemPhysChem is peer-reviewed.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
