摘要
本课题采用热注射法、采用Mn掺杂的合成方法,成功制备了稳定的CsPbI_(3):Mn纳米晶。通过对纳米晶光致发光材料光谱测试,扫描电子显微镜(SEM)对纳米晶的形貌表征。检测结果显示纳米钙钛矿晶体具有更高的发光强度和更高的光学稳定性。对掺杂和未掺杂的纳米晶进行了发光强度及荧光时间衰减的对比,对比结果表明,CsPbI_(3):Mn纳米晶的量子产率高达27.74%,稳定时间长达21天。因CsPbI_(3):Mn纳米晶非凡的光电特性,可将其应用于发光二极管。
In this study,stable CsPbI_(3):Mn nanocrystals were successfully prepared by hot injection method and synthesis method of Mn dopant.The morphology of nanocrystals was characterized by scanning electron microscope(SEM)through the spectroscopic test of nanocrystalline photoluminescent materials.The results show that nano-perovskite crystal has higher luminescence intensity and higher optical stability.The luminescence intensity and fluorescence time decay of doped and undoped nanocrystals were compared.The comparison results show that the quantum yield of CsPbI_(3):Mn nanocrystals is as high as 27.74%,and the stabilization time is as long as 21 days.Because of the special photoelectric properties of CsPbI_(3):Mn nanocrystals,they are used in light-emitting diodes.
作者
杨敏
何蓉
姜涛
徐攀
梁超
官川琳
Yang Min;He Rong;Jiang Tao;Xu Pan;Liang Chao;Guan Chuanlin(Chengdu Normal University,Sichuan,611130;Leshan Foreign Language School,Sichuan,614000)
出处
《当代化工研究》
2021年第19期4-6,共3页
Modern Chemical Research
基金
成都师范学院校级重点项目(2019CS19ZA03)
四川省2020年教育科研项目(SCJG20A112)
2021年四川省大学生创新创业项目(国家级:202114389015)。
关键词
热注射法
纳米晶
钙钛矿
光学稳定性
发光二极管
heat injection
nanocrystals
perovskite
optical stability
luminous diode
