Efficient white and red light emission from GaN/tris-(8-hydroxyquinolato) aluminum/platinum(II) meso-tetrakis(pentafluorophenyl) porphyrin hybrid light-emitting diodes

被引：58

作者：

Xiang, HF

Yu, SC

Che, CM

Lai, PT

机构：

[1] Univ Hong Kong, Dept Chem, Hong Kong, Hong Kong, Peoples R China

[2] Univ Hong Kong, HKU CAS Joint Lab New Mat, Hong Kong, Hong Kong, Peoples R China

[3] Univ Hong Kong, Dept Elect & Elect Engn, Hong Kong, Hong Kong, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2003年 / 83卷 / 08期

关键词：

D O I：

10.1063/1.1604192

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report efficient white and red light emission from GaN light-emitting diode (LED)/tris-(8-hydroxyquinolato) aluminum (Alq(3))/platinum(II) meso-tetrakis(pentafluorophenyl) porphyrin (PtF20TPP) hybrid LEDs. Alq(3) was employed to enhance the efficiency of red and white luminescence conversion (LC) LEDs through energy transfer from Alq(3) to PtF20TPP. In the white LC-LED, an intense, highly pure white-light emission with CIE_1931 coordinates at x=0.32 and y=0.31 is obtained. The LC-LEDs in this work have relatively high efficiencies, 3.3% for white LC-LED and 4.0% for red LC-LED. The color temperature (T-c), color rendering index (R-a) and luminous efficiency (eta(L)) of the white LC-LED at 20 mA are 6800 K, 90.6 and 10 lm/W, respectively. (C) 2003 American Institute of Physics.

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页码：1518 / 1520

页数：3

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