Yangning Zhang, Cherrelle J. Thomas, Hyun Gyung Kim, Jungchul Noh, Thana Shuga Aldeen, Allison J. Segapeli, Detlef-M. Smilgies, Brian A. Korgel
{"title":"Solvent Vapor Annealing of CsPbI3 Nanocrystal Superlattices Followed by In Situ X-ray Scattering","authors":"Yangning Zhang, Cherrelle J. Thomas, Hyun Gyung Kim, Jungchul Noh, Thana Shuga Aldeen, Allison J. Segapeli, Detlef-M. Smilgies, Brian A. Korgel","doi":"10.1021/acs.jpcc.4c06965","DOIUrl":null,"url":null,"abstract":"Tetragonal superlattices of orientationally ordered, cube-shaped, perovskite CsPbI<sub>3</sub> nanocrystals were annealed with hexane vapor and characterized with <i>in situ</i> grazing incidence small- and wide-angle X-ray scattering (GISAXS/GIWAXS). The superlattice expands in all directions and periodic order is retained in the <i>c</i>-direction orthogonal to the substrate, while in-plane orientational order is eventually lost. The tetragonal superlattice structure with orientational nanocrystal order is recovered after removing the solvent vapor. The perovskite crystal structure of the CsPbI<sub>3</sub> nanocrystals remains unaffected throughout the solvent vapor annealing process.","PeriodicalId":61,"journal":{"name":"The Journal of Physical Chemistry C","volume":"60 1","pages":""},"PeriodicalIF":3.3000,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"The Journal of Physical Chemistry C","FirstCategoryId":"1","ListUrlMain":"https://doi.org/10.1021/acs.jpcc.4c06965","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Tetragonal superlattices of orientationally ordered, cube-shaped, perovskite CsPbI3 nanocrystals were annealed with hexane vapor and characterized with in situ grazing incidence small- and wide-angle X-ray scattering (GISAXS/GIWAXS). The superlattice expands in all directions and periodic order is retained in the c-direction orthogonal to the substrate, while in-plane orientational order is eventually lost. The tetragonal superlattice structure with orientational nanocrystal order is recovered after removing the solvent vapor. The perovskite crystal structure of the CsPbI3 nanocrystals remains unaffected throughout the solvent vapor annealing process.
用正己烷蒸气对定向有序的立方体包晶 CsPbI3 纳米晶体的四方超晶格进行了退火处理，并用原位掠入射小角和广角 X 射线散射（GISAXS/GIWAXS）对其进行了表征。超晶格向各个方向扩展，在与基底正交的 c 方向上保留了周期性秩序，而面内取向秩序最终消失。移除溶剂蒸汽后，具有取向纳米晶序的四方超晶格结构得以恢复。在整个溶剂蒸汽退火过程中，CsPbI3 纳米晶体的包晶晶体结构未受影响。
期刊介绍：
The Journal of Physical Chemistry A/B/C is devoted to reporting new and original experimental and theoretical basic research of interest to physical chemists, biophysical chemists, and chemical physicists.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
