Download file (27.1MB)
Download as zip (5.8MB)

コレクション

引用

説明:

Formamidinium tin iodide (FASnI3) has emerged as a promising semiconductor material for various optoelectronic applications. However, the structure−photophysical property relationship remains ambiguous, because of the ready occurrence of structural defects in the fragile lattice. Here, using FASnI3 microcrystals synthesized with tailored reaction conditions, we unveil that structural defects can induce bandgap widening and abnormal photoluminescence. Based on combined analysis of X-ray photoelectron spectroscopy, solidstate nuclear magnetic resonance, and optical spectroscopy, we propose that bandgap widening could stem from defect mediated lattice distortion. Temperature-dependent photoluminescence measurements lead us to the discovery of a new near-infrared photoluminescence band between 185 and 10 K and negative thermal quenching in a broad range of 110−200 K. We believe that the knowledge gained here may not only offer a plausible roadmap to prepare high-quality organic−inorganic tin halide perovskite crystals but can also deepen our understanding on the relationship between defects and photophysical properties of tin-based perovskites.

権利情報:

• In Copyright
  This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Materials Letters, copyright © 2024 American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acsmaterialslett.4c00860

キーワード: halide perovskite

刊行年月日: 2024-08-05

出版者: American Chemical Society (ACS)

掲載誌:

• ACS Materials Letters (ISSN: 26394979) vol. 6 issue. 8 p. 3218-3225

研究助成金:

• Japan Society for the Promotion of Science 21H01743
• Japan Society for the Promotion of Science 24K01278
• Japan Society for the Promotion of Science 24K01462

原稿種別: 著者最終稿 (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.4629

公開URL: https://doi.org/10.1021/acsmaterialslett.4c00860

関連資料:

その他の識別子:

連絡先:

更新時刻: 2025-06-24 08:30:26 +0900

MDRでの公開時刻: 2025-06-24 08:20:45 +0900