Improved Stability and Photoluminescence Yield of Mn2+-Doped CH3NH3PbCl3 Perovskite Nanocrystals

被引：31

作者：

Li, Xianli ^{[1
,2
]}

Guo, Yan ^{[1
,2
]}

Luo, Binbin ^{[1
,2
]}

机构：

[1] Shantou Univ, Dept Chem, Shantou 515063, Guangdong, Peoples R China

[2] Shantou Univ, Key Lab Preparat & Applicat Ordered Struct Mat Gu, Shantou 515063, Guangdong, Peoples R China

来源：

CRYSTALS | 2018年 / 8卷 / 01期

关键词：

perovskite; Mn2+ doping; CH3H3PbCl3; stability; CESIUM LEAD HALIDE; QUANTUM DOTS; OPTICAL-PROPERTIES; COLLOIDAL SYNTHESIS; EXCITON DYNAMICS; ENERGY-TRANSFER; ANION-EXCHANGE; LUMINESCENT; BR; CL;

D O I：

10.3390/cryst8010004

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

Organic-inorganic CH3NH3PbCl3 perovskite nanocrystals (PNCs) doped with Mn2+, CH3NH3PbxMn1-xCl3, have been successfully prepared using a reprecipitation method at room temperature. Structural and morphological characterizations reveal that the CH3NH3PbxMn1-xCl3 PNCs with cubic phase transforms from particles to cubes and increases in size from 16.2 +/- 4.4 nm in average diameter to 25.3 +/- 7.2 nm in cubic length after the addition of Mn2+ precursor. The CH3NH3PbxMn1-xCl3 PNCs exhibit a weak exciton emission at similar to 405 nm with a low absolute quantum yield (QY) of around 0.4%, but a strong Mn2+ dopant emission at similar to 610 nm with a high QY of around 15.2%, resulting from efficient energy transfer from the PNC host to the Mn2+ dopant via the T-4(1)->(6)A(1) transition. In addition, the thermal and air stability of CH3NH3PbxMn1-xCl3 PNCs are improved due to the passivation with (3-aminopropyl) triethoxysilane (APTES), which is important for applications such as light emitting diodes (LEDs).

引用

页数：10

共 39 条

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