Journal
ADVANCED MATERIALS
Volume 23, Issue 31, Pages 3553-+Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201100719
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Funding
- National Science Foundation [CMMI-0729263, ECCS 0824186, 0638209]
- Army Research Office [DAAD19-02-D-0001]
- NSFC [21004019, 61078007]
- Beijing NOVA Program [2010B038]
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing [2010-KF-1]
- Shanghai Municipal Education Commission
- Shanghai Education Development Foundation [10SG46]
- Science and Technology Commission of Shanghai Municipality [1052nm07100]
- Program for New Century Excellent Talents in University
- Directorate For Engineering
- Div Of Industrial Innovation & Partnersh [0823040, 0638209] Funding Source: National Science Foundation
- Div Of Electrical, Commun & Cyber Sys
- Directorate For Engineering [0824186, 0846818] Funding Source: National Science Foundation
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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.
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