Luminescence distribution in the multi-quantum well region of III-nitride light emitting diodes

Friedhard Römer; Bernd Witzigmann

doi:10.1117/12.2253668

16 February 2017 Luminescence distribution in the multi-quantum well region of III-nitride light emitting diodes

Friedhard Römer, Bernd Witzigmann

Proceedings Volume 10124, Light-Emitting Diodes: Materials, Devices, and Applications for Solid State Lighting XXI; 101240Y (2017) https://doi.org/10.1117/12.2253668
Event: SPIE OPTO, 2017, San Francisco, California, United States

Abstract

We investigate the luminescence distribution in the multi quantum well (MQW) region of polar III-nitride light emitting diodes (LED) operating in the blue spectral range by means of carrier transport simulations. The MQW region is modeled with an equivalent circuit. It is demonstrated that the MQW barriers primarily aﬀect the hole transport. The electron scattering from continuum to bound quantum well states has a major impact on the electron transport. A nearly uniform luminescence distribution in the MQW region is achieved through a re-distribution of the luminescence from the n-side to the p-side QW with increasing current. We show that the re-distribution is seen through a decrease of the ideality factor in the MQW region and promoted by the asymmetry of the electron and hole transport.

Citation Download Citation

Friedhard Römer and Bernd Witzigmann "Luminescence distribution in the multi-quantum well region of III-nitride light emitting diodes", Proc. SPIE 10124, Light-Emitting Diodes: Materials, Devices, and Applications for Solid State Lighting XXI, 101240Y (16 February 2017); https://doi.org/10.1117/12.2253668

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