Ruonan Zhi, Linghang Kong, Hui Peng, Qilin Wei, Guang Dai and Bingsuo Zou
{"title":"Highly efficient tunable white emission with ultralong afterglow in Sb3+/Mn2+-codoped CsCdCl3 crystals for multifunctional applications†","authors":"Ruonan Zhi, Linghang Kong, Hui Peng, Qilin Wei, Guang Dai and Bingsuo Zou","doi":"10.1039/D4DT03038A","DOIUrl":null,"url":null,"abstract":"<p >Recently, metal halides have attracted much attention due to their fascinating optical properties. However, achieving efficient white emission with ultralong afterglow remains a great challenge. Herein, we report Sb<small><sup>3+</sup></small>/Mn<small><sup>2+</sup></small>-codoped CsCdCl<small><sub>3</sub></small> and multiple emission bands can be observed, which are derived from the self-trapped exciton emission of the Sb–Cl moiety and the d–d transition of Mn<small><sup>2+</sup></small>. Thus, tunable emission from cyan to orange light can be obtained. Moreover, efficient white emission with a luminous efficiency of 74% is observed when the energy-transfer efficiency from Sb<small><sup>3+</sup></small> to Mn<small><sup>2+</sup></small> is 34.5%. In particular, Sb<small><sup>3+</sup></small>/Mn<small><sup>2+</sup></small>-codoped CsCdCl<small><sub>3</sub></small> shows bright orange afterglow emission, and the afterglow intensity is 1000 times that of CsCdCl<small><sub>3</sub></small> and 20 times that of CsCdCl<small><sub>3</sub></small>:Mn<small><sup>2+</sup></small>. Upon combining this with thermoluminescence spectra, it is found that Mn<small><sup>2+</sup></small>/Sb<small><sup>3+</sup></small> codoping can effectively regulate the depth and density distribution of trap defects, resulting in the ultralong afterglow duration exceeding 12 h at room temperature. Surprisingly, white light stimulation can provide additional photonic energy for Sb<small><sup>3+</sup></small>/Mn<small><sup>2+</sup></small>-codoped CsCdCl<small><sub>3</sub></small>, which enables the rapid release of trapped carriers to the emission center and rejuvenates afterglow emission after 12 h pre-delay. Finally, we demonstrated the applications of the as-synthesized compounds in single-component white light illumination, multiple optical anti-counterfeiting and information encryption.</p>","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":" 5","pages":" 2027-2036"},"PeriodicalIF":3.5000,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Dalton Transactions","FirstCategoryId":"92","ListUrlMain":"https://pubs.rsc.org/en/content/articlelanding/2025/dt/d4dt03038a","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}
引用次数: 0
Abstract
Recently, metal halides have attracted much attention due to their fascinating optical properties. However, achieving efficient white emission with ultralong afterglow remains a great challenge. Herein, we report Sb3+/Mn2+-codoped CsCdCl3 and multiple emission bands can be observed, which are derived from the self-trapped exciton emission of the Sb–Cl moiety and the d–d transition of Mn2+. Thus, tunable emission from cyan to orange light can be obtained. Moreover, efficient white emission with a luminous efficiency of 74% is observed when the energy-transfer efficiency from Sb3+ to Mn2+ is 34.5%. In particular, Sb3+/Mn2+-codoped CsCdCl3 shows bright orange afterglow emission, and the afterglow intensity is 1000 times that of CsCdCl3 and 20 times that of CsCdCl3:Mn2+. Upon combining this with thermoluminescence spectra, it is found that Mn2+/Sb3+ codoping can effectively regulate the depth and density distribution of trap defects, resulting in the ultralong afterglow duration exceeding 12 h at room temperature. Surprisingly, white light stimulation can provide additional photonic energy for Sb3+/Mn2+-codoped CsCdCl3, which enables the rapid release of trapped carriers to the emission center and rejuvenates afterglow emission after 12 h pre-delay. Finally, we demonstrated the applications of the as-synthesized compounds in single-component white light illumination, multiple optical anti-counterfeiting and information encryption.
期刊介绍:
Dalton Transactions is a journal for all areas of inorganic chemistry, which encompasses the organometallic, bioinorganic and materials chemistry of the elements, with applications including synthesis, catalysis, energy conversion/storage, electrical devices and medicine. Dalton Transactions welcomes high-quality, original submissions in all of these areas and more, where the advancement of knowledge in inorganic chemistry is significant.