Lihong Qi, Song Wang, Hongyan Li, Ruiji Sun, Yi Wu, Ruirui Wang, Liangying Hua, Ying Xie* and Kai Pan*,
{"title":"提高铟合金单分散无铅双钙钛矿Cs2AgBiBr6纳米晶的发光性能","authors":"Lihong Qi, Song Wang, Hongyan Li, Ruiji Sun, Yi Wu, Ruirui Wang, Liangying Hua, Ying Xie* and Kai Pan*, ","doi":"10.1021/acs.jpcc.5c0166610.1021/acs.jpcc.5c01666","DOIUrl":null,"url":null,"abstract":"<p >Lead-free double perovskite nanocrystals (NCs) have garnered significant attention due to their ability to address the toxicity and instability issues associated with lead-based perovskite NCs. Herein, we have successfully synthesized a series of Cs<sub>2</sub>AgBiBr<sub>6</sub> NCs with varying concentrations of In<sup>3+</sup> alloying, achieved through a colloidal solution method. These NCs consistently exhibit a monodisperse, uniform cubic morphology. By meticulously adjusting the alloying concentration of In<sup>3+</sup>, we have significantly enhanced the luminescence performance of Cs<sub>2</sub>AgBiBr<sub>6</sub> NCs, achieving a maximum photoluminescence quantum yield of 14.69% at the optimal In<sup>3+</sup> alloying concentration. Simultaneously, the exciton lifetime was markedly extended 4.6 times, greatly enhancing carrier dynamics. Temperature-dependent photoluminescence spectroscopy analysis further confirms that postalloying with In<sup>3+</sup>, the NCs not only exhibit strong Coulombic forces and high thermal stability but also significantly reduce nonradiative transition processes. Moreover, density functional theory calculations reveal that In<sup>3+</sup> alloying leads to a redistribution of charge density, profoundly affecting the electronic structure and subsequently enhancing the carrier mobility. Therefore, this study not only provides valuable insights into the role of In<sup>3+</sup> alloying in enhancing the luminescence performance of double perovskite NCs but also opens up potential application prospects for optoelectronic devices in the future.</p>","PeriodicalId":61,"journal":{"name":"The Journal of Physical Chemistry C","volume":"129 21","pages":"9786–9794 9786–9794"},"PeriodicalIF":3.2000,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Enhancing the Luminescence Performance of Monodisperse Lead-Free Double Perovskite Cs2AgBiBr6 Nanocrystals Alloyed with Indium\",\"authors\":\"Lihong Qi, Song Wang, Hongyan Li, Ruiji Sun, Yi Wu, Ruirui Wang, Liangying Hua, Ying Xie* and Kai Pan*, \",\"doi\":\"10.1021/acs.jpcc.5c0166610.1021/acs.jpcc.5c01666\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >Lead-free double perovskite nanocrystals (NCs) have garnered significant attention due to their ability to address the toxicity and instability issues associated with lead-based perovskite NCs. Herein, we have successfully synthesized a series of Cs<sub>2</sub>AgBiBr<sub>6</sub> NCs with varying concentrations of In<sup>3+</sup> alloying, achieved through a colloidal solution method. These NCs consistently exhibit a monodisperse, uniform cubic morphology. By meticulously adjusting the alloying concentration of In<sup>3+</sup>, we have significantly enhanced the luminescence performance of Cs<sub>2</sub>AgBiBr<sub>6</sub> NCs, achieving a maximum photoluminescence quantum yield of 14.69% at the optimal In<sup>3+</sup> alloying concentration. Simultaneously, the exciton lifetime was markedly extended 4.6 times, greatly enhancing carrier dynamics. Temperature-dependent photoluminescence spectroscopy analysis further confirms that postalloying with In<sup>3+</sup>, the NCs not only exhibit strong Coulombic forces and high thermal stability but also significantly reduce nonradiative transition processes. Moreover, density functional theory calculations reveal that In<sup>3+</sup> alloying leads to a redistribution of charge density, profoundly affecting the electronic structure and subsequently enhancing the carrier mobility. Therefore, this study not only provides valuable insights into the role of In<sup>3+</sup> alloying in enhancing the luminescence performance of double perovskite NCs but also opens up potential application prospects for optoelectronic devices in the future.</p>\",\"PeriodicalId\":61,\"journal\":{\"name\":\"The Journal of Physical Chemistry C\",\"volume\":\"129 21\",\"pages\":\"9786–9794 9786–9794\"},\"PeriodicalIF\":3.2000,\"publicationDate\":\"2025-05-19\",\"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://pubs.acs.org/doi/10.1021/acs.jpcc.5c01666\",\"RegionNum\":3,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"The Journal of Physical Chemistry C","FirstCategoryId":"1","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acs.jpcc.5c01666","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Enhancing the Luminescence Performance of Monodisperse Lead-Free Double Perovskite Cs2AgBiBr6 Nanocrystals Alloyed with Indium
Lead-free double perovskite nanocrystals (NCs) have garnered significant attention due to their ability to address the toxicity and instability issues associated with lead-based perovskite NCs. Herein, we have successfully synthesized a series of Cs2AgBiBr6 NCs with varying concentrations of In3+ alloying, achieved through a colloidal solution method. These NCs consistently exhibit a monodisperse, uniform cubic morphology. By meticulously adjusting the alloying concentration of In3+, we have significantly enhanced the luminescence performance of Cs2AgBiBr6 NCs, achieving a maximum photoluminescence quantum yield of 14.69% at the optimal In3+ alloying concentration. Simultaneously, the exciton lifetime was markedly extended 4.6 times, greatly enhancing carrier dynamics. Temperature-dependent photoluminescence spectroscopy analysis further confirms that postalloying with In3+, the NCs not only exhibit strong Coulombic forces and high thermal stability but also significantly reduce nonradiative transition processes. Moreover, density functional theory calculations reveal that In3+ alloying leads to a redistribution of charge density, profoundly affecting the electronic structure and subsequently enhancing the carrier mobility. Therefore, this study not only provides valuable insights into the role of In3+ alloying in enhancing the luminescence performance of double perovskite NCs but also opens up potential application prospects for optoelectronic devices in the future.
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.