Rujun Yang , Kunjie Song , Yuantian Zheng , Chenhan Zhan , Yajing Wang , Cunjian Lin , Tianliang Zhou , Yixi Zhuang , Rongjun Xie
{"title":"双钙钛矿荧光粉中陷阱深度的宽范围调谐,使可调谐的近红外持续发光","authors":"Rujun Yang , Kunjie Song , Yuantian Zheng , Chenhan Zhan , Yajing Wang , Cunjian Lin , Tianliang Zhou , Yixi Zhuang , Rongjun Xie","doi":"10.1016/j.apmate.2025.100343","DOIUrl":null,"url":null,"abstract":"<div><div>Persistent Luminescence (PersL) materials, which use traps to store energy and emit photons over a long period, have found important applications in the fields of optical information storage, security labeling, and biological imaging. The trap depth is a crucial factor determining the performance of these materials; however, achieving the desired trap depth with high precision remains a great challenge. Here, we provide double perovskite phosphors (Cs<sub>2</sub>SnCl<sub>6</sub>-Cs<sub>2</sub>ZrCl<sub>6</sub>-Cs<sub>2</sub>HfCl<sub>6</sub> series) with highly compatible crystal structures, enabling continuous and precise tuning of trap depth over an ultra-wide range of 0.11–1.25 eV. By incorporating W<sup>4+</sup> as the luminescent centers, these phosphors exhibit outstanding near-infrared (NIR) PersL performance at approximately 900 nm and a lasting emission duration exceeding 10 h. The underlying mechanism of PersL is elucidated, and the wide-range tunability of trap depth is attributed to the universal applicability of band-gap engineering in the entire material system. Furthermore, we demonstrate the practical application of these materials by designing a flexible detector plate for X-ray imaging. The detector plate exhibits a storage time of more than 1 week, a detection limit of 0.83 μGy<sub>air</sub>·s<sup>−1</sup> in the near-infrared region, and real-time and delay-time imaging resolutions of 14.2 lp·mm<sup>−1</sup> and 2.5 lp·mm<sup>−1</sup>, respectively. These attributes demonstrate strong potential for X-ray luminescence extension imaging.</div></div>","PeriodicalId":7283,"journal":{"name":"Advanced Powder Materials","volume":"4 6","pages":"Article 100343"},"PeriodicalIF":0.0000,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Wide-range tuning of trap depths in double perovskite phosphors enabling tunable NIR persistent luminescence\",\"authors\":\"Rujun Yang , Kunjie Song , Yuantian Zheng , Chenhan Zhan , Yajing Wang , Cunjian Lin , Tianliang Zhou , Yixi Zhuang , Rongjun Xie\",\"doi\":\"10.1016/j.apmate.2025.100343\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Persistent Luminescence (PersL) materials, which use traps to store energy and emit photons over a long period, have found important applications in the fields of optical information storage, security labeling, and biological imaging. The trap depth is a crucial factor determining the performance of these materials; however, achieving the desired trap depth with high precision remains a great challenge. Here, we provide double perovskite phosphors (Cs<sub>2</sub>SnCl<sub>6</sub>-Cs<sub>2</sub>ZrCl<sub>6</sub>-Cs<sub>2</sub>HfCl<sub>6</sub> series) with highly compatible crystal structures, enabling continuous and precise tuning of trap depth over an ultra-wide range of 0.11–1.25 eV. By incorporating W<sup>4+</sup> as the luminescent centers, these phosphors exhibit outstanding near-infrared (NIR) PersL performance at approximately 900 nm and a lasting emission duration exceeding 10 h. The underlying mechanism of PersL is elucidated, and the wide-range tunability of trap depth is attributed to the universal applicability of band-gap engineering in the entire material system. Furthermore, we demonstrate the practical application of these materials by designing a flexible detector plate for X-ray imaging. The detector plate exhibits a storage time of more than 1 week, a detection limit of 0.83 μGy<sub>air</sub>·s<sup>−1</sup> in the near-infrared region, and real-time and delay-time imaging resolutions of 14.2 lp·mm<sup>−1</sup> and 2.5 lp·mm<sup>−1</sup>, respectively. These attributes demonstrate strong potential for X-ray luminescence extension imaging.</div></div>\",\"PeriodicalId\":7283,\"journal\":{\"name\":\"Advanced Powder Materials\",\"volume\":\"4 6\",\"pages\":\"Article 100343\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2025-09-11\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Advanced Powder Materials\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2772834X2500079X\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advanced Powder Materials","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2772834X2500079X","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Wide-range tuning of trap depths in double perovskite phosphors enabling tunable NIR persistent luminescence
Persistent Luminescence (PersL) materials, which use traps to store energy and emit photons over a long period, have found important applications in the fields of optical information storage, security labeling, and biological imaging. The trap depth is a crucial factor determining the performance of these materials; however, achieving the desired trap depth with high precision remains a great challenge. Here, we provide double perovskite phosphors (Cs2SnCl6-Cs2ZrCl6-Cs2HfCl6 series) with highly compatible crystal structures, enabling continuous and precise tuning of trap depth over an ultra-wide range of 0.11–1.25 eV. By incorporating W4+ as the luminescent centers, these phosphors exhibit outstanding near-infrared (NIR) PersL performance at approximately 900 nm and a lasting emission duration exceeding 10 h. The underlying mechanism of PersL is elucidated, and the wide-range tunability of trap depth is attributed to the universal applicability of band-gap engineering in the entire material system. Furthermore, we demonstrate the practical application of these materials by designing a flexible detector plate for X-ray imaging. The detector plate exhibits a storage time of more than 1 week, a detection limit of 0.83 μGyair·s−1 in the near-infrared region, and real-time and delay-time imaging resolutions of 14.2 lp·mm−1 and 2.5 lp·mm−1, respectively. These attributes demonstrate strong potential for X-ray luminescence extension imaging.