Monodispersed cation-disordered cubic AgInS2 nanocrystals with enhanced fluorescence

被引：51

作者：

Feng, Zhenyu ^{[1
]}

Dai, Pengcheng ^{[1
]}

Ma, Xicheng ^{[1
]}

Zhan, Jinhua ^{[1
]}

Lin, Zhaojun ^{[2
]}

机构：

[1] Shandong Univ, Dept Chem, Educ Minist, Key Lab Colloid & Interface Chem, Jinan 250100, Peoples R China

[2] Shandong Univ, Dept Phys, Jinan 250100, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2010年 / 96卷 / 01期

关键词：

fluorescence; indium compounds; nanostructured materials; photoluminescence; silver compounds; solid-state phase transformations; ternary semiconductors; INDUCED PHASE-TRANSFORMATIONS; SEMICONDUCTOR QUANTUM DOTS; SINGLE-SOURCE PRECURSORS; REACTION ROUTE; THIN-FILMS; CUINS2; NANOPARTICLES; CHALCOPYRITE; CRYSTALS; COLLOIDS;

D O I：

10.1063/1.3280372

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Monodispersed metastable cubic AgInS2 nanocrystals with an average size of around 2.5 nm are obtained via a solution-phase reaction. In contrast with the usual chalcopyrite and orthorhombic phase, Ag+ and In3+ cations in metastable cubic AgInS2 are randomly coordinated by four S2- anions. A phase transition from cation-disordered cubic to orthorhombic AgInS2 occurs with the increased reaction temperature or elongated reaction time. The photoluminescence quantum yield of cation-disordered cubic AgInS2 nanocrystals could reach 10% at room temperature, which is much higher than that of orthorhombic AgInS2 nanocrystals obtained via a similar approach.

引用

页数：3

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