Current spreading analysis in vertical electrode GaN-based blue LEDs

Joo Sun Yun; Sung Min Hwang; Jong In Shim

doi:10.1117/12.756517

15 January 2008 Current spreading analysis in vertical electrode GaN-based blue LEDs

Joo Sun Yun, Sung Min Hwang, Jong In Shim

Proceedings Volume 6841, Solid State Lighting and Solar Energy Technologies; 68410L (2008) https://doi.org/10.1117/12.756517
Event: Photonics Asia 2007, 2007, Beijing, China

Abstract

In this study, effects of n-electrode patterns to the current spreading in the active region were analyzed on the blue vertical light emitting diode (VLED) with GaN/InGaN multi quantum well (MQW). Several n-electrode patterns of the VLED are designed, analyzed qualitatively, and investigated its effect to current spreading in the active region. A 3-dimensinal circuit model whose parameters are experimentally extracted from an actual VLED chip is adopted for the quantitative analysis of current spreading. The n-electrode patterns are modeled and simulated by simple electrical circuits in order to find the current distribution and current-voltage characteristics of devices. Based on theoretical analysis results, blue VLEDs with different n-electrode patterns were fabricated and a series of measurements were carried out. Analytic and experimental results for different n-electrode pattern showed quite similar tendencies. Finally, we proposed some design methodologies for improved current spreading.

Citation Download Citation

Joo Sun Yun, Sung Min Hwang, and Jong In Shim "Current spreading analysis in vertical electrode GaN-based blue LEDs", Proc. SPIE 6841, Solid State Lighting and Solar Energy Technologies, 68410L (15 January 2008); https://doi.org/10.1117/12.756517

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available