CuFeS2 Quantum Dots and Highly Luminescent CuFeS2 Based Core/Shell Structures: Synthesis, Tunability, and Photophysics

被引：94

作者：

Bhattacharyya, Biswajit ^{[1
]}

Pandey, Anshu ^{[1
]}

机构：

[1] Indian Inst Sci, Solid State & Struct Chem Unit, Bangalore 560012, Karnataka, India

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2016年 / 138卷 / 32期

关键词：

PEROVSKITE SOLAR-CELLS; ELECTRONIC-STRUCTURES; SEMICONDUCTOR NANOCRYSTALS; CHALCOPYRITE SEMICONDUCTOR; SULFIDE NANOCRYSTALS; CUINS2; NANOCRYSTALS; OPTICAL-ABSORPTION; PYRITE FES2; SIZE; PBSE;

D O I：

10.1021/jacs.6b04981

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report the synthesis of copper iron sulfide (wCuFeSw(2)) quantum dots (QDs). These materials exhibit a tunable band gap that spans the range 0.5-2 eV (600-2500 nm). Although the as-prepared material is nonemissive, CuFeS2/CdS core/shell structures are shown to exhibit quantum yields that exceed 80%. Like other members of the I-III-VI2 family QDs, CuFeS2 based nanoparticles exhibit a long-lived emission that is significantly red-shifted compared to the band gap. CuFeS2 QDs are unique in terms of their composition. In particular, these QDs are the only band-gap-tunable infrared chromophore composed entirely of elements with atomic numbers less than 30.

引用

页码：10207 / 10213

页数：7

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