Near-Band-Edge Electroluminescence from Heavy-Metal-Free Colloidal Quantum Dots

被引：187

作者：

Tan, Zhanao ^{[1
,2
]}

Zhang, Yu ^{[1
,3
]}

Xie, Chuang ^{[1
,4
]}

Su, Huaipeng ^{[1
,4
]}

Liu, Jie ^{[1
]}

Zhang, Chunfeng ^{[1
]}

Dellas, Nicholas ^{[5
]}

Mohney, Suzanne E. ^{[6
,7
]}

Wang, Yongqiang ^{[5
]}

Wang, Jingkang ^{[4
]}

Xu, Jian ^{[1
,8
]}

机构：

[1] Penn State Univ, Dept Engn Sci & Mech, University Pk, PA 16802 USA

[2] N China Elect Power Univ, Sch Renewable Energy, New & Renewable Energy Beijing Key Lab, Beijing 102206, Peoples R China

[3] Jilin Univ, Coll Elect Sci & Engn, State Key Lab Integrated Optoelect, Changchun 130012, Peoples R China

[4] Tianjin Univ, Sch Chem Engn & Technol, State Key Lab Chem Engn, Tianjin 300072, Peoples R China

[5] Ocean NanoTech LLC, Springdale, AR 72764 USA

[6] Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA

[7] Penn State Univ, Mat Res Inst, University Pk, PA 16802 USA

[8] Shanghai Univ Sci & Technol, Shanghai 200093, Peoples R China

来源：

ADVANCED MATERIALS | 2011年 / 23卷 / 31期

基金：

美国国家科学基金会;

关键词：

LIGHT-EMITTING-DIODES; NANOCRYSTALS;

D O I：

10.1002/adma.201100719

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The first observation of near-band-edge electroluminescent emission from the colloidal quantum dots (QDs) consisting of CuInS2-ZnS alloyed (ZCIS) cores and ZnSe/ZnS double shells is reported. Bright and organic-free electroluminescence (EL) emission peaked at red (lambda = 623 nm), yellow (lambda = 594 nm), and green (lambda = 560 nm) wavelengths is observed from the heavy-metal-free QD light-emitting diodes (QD-LEDs). The onset voltages, luminance output uniformity, and efficiencies of the heavy-metal-free QD-LEDs are characterized.

引用

页码：3553 / +

页数：7

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