Insights into the local structure of dopants, doping efficiency, and luminescence properties of lanthanide-doped cspbcl3 perovskite nanocrystals
文献类型:期刊论文
作者 | Ma, Ju-Ping1; Chen, Ya-Meng1; Zhang, Lu-Min1; Guo, Shao-Qiang2; Liu, Jian-Dang3; Li, Hong1; Ye, Bang-Jiao3; Li, Zhi-Yong1; Zhou, Yang1,4; Zhang, Bin-Bin1 |
刊名 | Journal of materials chemistry c |
出版日期 | 2019-03-14 |
卷号 | 7期号:10页码:3037-3048 |
ISSN号 | 2050-7526 |
DOI | 10.1039/c9tc00237e |
通讯作者 | Zhang, jun-ying(zjy@buaa.edu.cn) ; Sun, hong-tao(timothyhsun@gmail.com) |
英文摘要 | Doping has been established as a powerful approach for endowing lead halide perovskite nanocrystals (ncs) with novel properties. however, our fundamental understanding of the local structure of dopants, doping efficiency and luminescence properties of these ncs is still very sparse. here, we provide the first experimental evidence regarding the local structure of rare earth ions in cspbcl3 ncs, based on the analysis of extended x-ray absorption fine structure spectroscopy. our result suggests that yb3+ occupies the pb2+ crystallographic sites in cspbcl3 ncs. we further demonstrate a strategy to examine the determinant of the doping efficiency in lanthanide-doped lead halide perovskite ncs, which enables us to uncover the important role of structural defects in affecting the doping efficiency. a broad range of experimental characterization techniques including steady-state and time-resolved luminescence spectra, x-ray absorption spectra, and positron annihilation lifetime spectra, coupled with first-principles calculations, help us identify that the doping efficiency is associated with structural defects in ncs and that the formation of a higher-concentration of defects favors incorporation of a higher-concentration of dopants into the lattice. importantly, we demonstrate that the concept of defect-assisted doping is not limited to the model system of yb3+-doped cspbcl3 ncs, but can be used as a guideline to rationally tune the doping efficiency of lanthanide-doped halide perovskite ncs. we also show that lanthanide-doped cspbcl3 ncs demonstrate anomalous decay of the band-edge emission, which we propose is due to the existence of shallow trapping states near the conduction band. our results greatly deepen the understanding of the structural and photophysical properties of lanthanide-doped lead halide perovskite ncs, and highlight the possibility to use the chemistry of defects to tailor the doping efficiency of halide perovskite ncs. |
WOS关键词 | DEPENDENT STOKES SHIFT ; QUANTUM DOTS ; HIGHLY LUMINESCENT ; CHARGE-TRANSFER ; PHOTOLUMINESCENCE ; EMISSION ; MN ; SUBSTITUTION ; HALIDES ; BR |
资助项目 | Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)###2036 ; National Natural Science Foundation of China[11874275] ; National Natural Science Foundation of China[11574225] ; National Natural Science Foundation of China[51672106] ; Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD) ; State Key Laboratory of Luminescence and Applications, Chinese Academy of Sciences[SKLA-2018-04] |
WOS研究方向 | Materials Science ; Physics |
WOS类目 | Materials Science, Multidisciplinary ; Physics, Applied |
语种 | 英语 |
出版者 | ROYAL SOC CHEMISTRY |
WOS记录号 | WOS:000461597400023 |
资助机构 | National Natural Science Foundation of China ; Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD) ; State Key Laboratory of Luminescence and Applications, Chinese Academy of Sciences |
URI标识 | http://www.irgrid.ac.cn/handle/1471x/2160750 |
专题 | 高能物理研究所 |
通讯作者 | Zhang, Jun-Ying; Sun, Hong-Tao |
作者单位 | 1.Soochow Univ, Coll Chem Chem Engn & Mat Sci, Suzhou 215123, Peoples R China 2.Beihang Univ, Dept Phys, Beijing 100191, Peoples R China 3.Univ Sci & Technol China, Dept Modern Phys, State Key Lab Particle Detect & Elect, Hefei 230026, Anhui, Peoples R China 4.KAUST, Div Phys Sci & Engn, Thuwal 239556900, Saudi Arabia 5.Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys, State Key Lab Luminescence & Applicat, Changchun 130033, Jilin, Peoples R China |
推荐引用方式 GB/T 7714 | Ma, Ju-Ping,Chen, Ya-Meng,Zhang, Lu-Min,et al. Insights into the local structure of dopants, doping efficiency, and luminescence properties of lanthanide-doped cspbcl3 perovskite nanocrystals[J]. Journal of materials chemistry c,2019,7(10):3037-3048. |
APA | Ma, Ju-Ping.,Chen, Ya-Meng.,Zhang, Lu-Min.,Guo, Shao-Qiang.,Liu, Jian-Dang.,...&Sun, Hong-Tao.(2019).Insights into the local structure of dopants, doping efficiency, and luminescence properties of lanthanide-doped cspbcl3 perovskite nanocrystals.Journal of materials chemistry c,7(10),3037-3048. |
MLA | Ma, Ju-Ping,et al."Insights into the local structure of dopants, doping efficiency, and luminescence properties of lanthanide-doped cspbcl3 perovskite nanocrystals".Journal of materials chemistry c 7.10(2019):3037-3048. |
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来源:高能物理研究所
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