Efficient near-infrared polymer nanocrystat light-emitting diodes

被引：1211
|
作者：
Tessler, N [1 ]
Medvedev, V
Kazes, M
Kan, SH
Banin, U
机构：
[1] Technion Israel Inst Technol, Dept Elect Engn, Ctr Microelect, IL-32000 Haifa, Israel
[2] Technion Israel Inst Technol, Commun & Informat Technol Ctr, IL-32000 Haifa, Israel
[3] Hebrew Univ Jerusalem, Inst Chem, IL-91904 Jerusalem, Israel
[4] Hebrew Univ Jerusalem, Ctr Nanosci & Nanotechnol, IL-91904 Jerusalem, Israel
来源：
SCIENCE | 2002年 / 295卷 / 5559期
关键词：
D O I：
10.1126/science.1068153
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Conjugated polymers and indium arsenide-based nanocrystals were used to create near-infrared plastic light-emitting diodes. Emission was tunable from 1 to 1.3 micrometers-a range that effectively covers the short-wavelength telecommunications band-by means of the quantum confinement effects in the nanocrystals. The external efficiency value (photons out divided by electrons in) is similar to0.5% (that is, >1% internal) and is mainly limited by device architecture. The near-infrared emission did not overlap the charge-induced absorption bands of the polymer.
引用
收藏
页码：1506 / 1508
页数：3
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