用户登录
期刊信息
  • 主管单位:
  • 中国科学技术协会
  • 主办单位:
  • 中国仪器仪表学会、上海光学仪器研究所、中国光学学会工程光学专业委员会
  • 主  编:
  • 庄松林
  • 地  址:
  • 上海市军工路516号上海理工大学《光学仪器》编辑部
  • 邮政编码:
  • 200093
  • 联系电话:
  • 021-55270110
  • 电子邮件:
  • gxyq@usst.edu.cn
  • 国际标准刊号:
  • 1005-5630
  • 国内统一刊号:
  • 31-1504/TH
  • 邮发代号:
  • 单  价:
  • 15.00
  • 定  价:
  • 90.00
锰掺杂二维钙钛矿 (PMA)2PbBr4中的发光性质及能量转移机制
Luminescence properties and energy transfer mechanism in Mn-doped two-dimensional perovskite (PMA)2PbBr4
投稿时间:2023-03-07  
DOI:10.3969/j.issn.1005-5630.202303070043
中文关键词:  二维钙钛矿  锰掺杂  发光机制  能量转移机制
英文关键词:two-dimensional perovskite  manganese doping  luminous mechanism  energy transfer mechanism
基金项目:
作者单位E-mail
王梓屹 上海理工大学 光电信息与计算机工程学院上海 200093  
徐公杰 上海理工大学 光电信息与计算机工程学院上海 200093 gjxu@usst.edu.cn 
摘要点击次数: 128
全文下载次数: 130
中文摘要:
      通过锰掺杂,可以调节钙钛矿的发光波长,提高其发光量子产率。在二维钙钛矿(PMA)2PbBr4中引入Mn2+掺杂,研究了(PMA)2PbBr4中Mn2+掺杂的发光性质以及能量转移机制。研究表明,锰掺杂后,原来二维钙钛矿的激子复合发光峰(419 nm)变成了Mn2+轨道4T16A1之间的跃迁发光(608 nm),其中发生了有效的能量转移。Mn2+的引入导致晶格一定程度的畸变,进而激子寿命显著降低(从6.51 ns到0.30 ns);同时,由Mn2+带来的发光寿命却对掺杂浓度并不敏感(0.23 ms),这源于此时发光对应于Mn2+对应于4T16A1之间的跃迁。Mn2+掺杂后,其光稳定性有了明显改善。因此,锰掺杂对于调节二维钙钛矿的发光波长或带宽,提高发光效率是一个有效手段,为二维钙钛矿在白光照明方面的应用提供可能性。
英文摘要:
      Through manganese doping, the luminescence wavelength of perovskite can be adjusted to improve its quantum yield. In this paper, Mn2+ doping was lead into two-dimensional perovskite (PMA)2PbBr4 and the luminescence properties and energy transfer mechanism in Mn-doped two-dimensional perovskite (PMA)2PbBr4 were studied. The results show that after manganese doping, the exciton recombination luminescence peak (419 nm) of the original two-dimensional perovskite changed into a transition (608 nm) between the Mn2+ orbital 4T16A1, in which an effective energy transfer occurred. The introduction of Mn2+ leads to a certain degree of lattice distortion, and then the exciton lifetime decreases (from 6.51 ns to 0.30 ns); at the same time, the luminescence lifetime brought by Mn2+ is not sensitive to the doping concentration (0.23 ms), because the luminescence corresponds to the transition between 4T1 and 6A1 of Mn2+ at this time. After manganese doping, its optical stability has also been significantly improved. Therefore, manganese doping is an effective means to adjust the wavelength or bandwidth of two-dimensional perovskite and improve the luminous efficiency, which provides the possibility for the application of two-dimensional perovskite in white light lighting.
HTML   查看全文  查看/发表评论  下载PDF阅读器
关闭