Current crowding effect on light extraction efficiency of thin-film LEDs

被引：29

作者：

Bogdanov, M. V. ^{[1
]}

Bulashevich, K. A. ^{[1
]}

Khokhlev, O. V. ^{[1
]}

Evstratov, I. Yu. ^{[1
]}

Ramm, M. S. ^{[1
]}

Karpov, S. Yu. ^{[1
]}

机构：

[1] STR Grp Soft Impact Ltd, St Petersburg 194156, Russia

来源：

PHYSICA STATUS SOLIDI C: CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 7, NO 7-8 | 2010年 / 7卷 / 7-8期

关键词：

III-V nitrides; quantum wells; LEDs; finite element simulation; electrical properties; electroluminescence;

D O I：

10.1002/pssc.200983415

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Using coupled 3D modelling of electrical, thermal, and optical processes, we consider operation of a blue LED with advanced thin-film flip-chip design. Significant effect of current crowing on light extraction from the LED die is predicted theoretically. As a result, the light extraction efficiency is found to decrease remarkably with the operation current. The nature of the effect is identified, and some ways for improvement of the high-current extraction efficiency are suggested and examined by simulations. (c) 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

引用

页数：3

共 7 条

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