Extremely high current density over 1000 A/cm2 operation in M-GaN LEDs on bulk GaN substrates with low-efficiency droop

Toshiya Yokogawa; Akira Inoue

doi:10.1117/12.2047235

27 February 2014 Extremely high current density over 1000 A/cm₂ operation in M-GaN LEDs on bulk GaN substrates with low-efficiency droop

Toshiya Yokogawa, Akira Inoue

Author Affiliations +

Proceedings Volume 9003, Light-Emitting Diodes: Materials, Devices, and Applications for Solid State Lighting XVIII; 900316 (2014) https://doi.org/10.1117/12.2047235
Event: SPIE OPTO, 2014, San Francisco, California, United States

Abstract

A high current density over 1000 A/cm² operation in small chip size m-plane GaN-LED has been successfully demonstrated. The LED with chip size 450 × 450 μm² has emitted 1353 mW in light output power and 39.2% in external quantum efficiency (EQE) at 1000 A/cm² (1134 mA). The m-plane GaN-LED has showed asymmetric radiation characteristics. The radiation patterns are controlled by the surface of LED package, the height of LED chip, and striped texture on top m-plane surface.

Citation Download Citation

Toshiya Yokogawa and Akira Inoue "Extremely high current density over 1000 A/cm₂ operation in M-GaN LEDs on bulk GaN substrates with low-efficiency droop", Proc. SPIE 9003, Light-Emitting Diodes: Materials, Devices, and Applications for Solid State Lighting XVIII, 900316 (27 February 2014); https://doi.org/10.1117/12.2047235

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