Enhanced light extraction through nano-textured GaN interfaces via supercritical angle scattering

Spilios Riyopoulos; J. Cabalu; T. Moustakas

doi:10.1117/12.629518

25 October 2005 Enhanced light extraction through nano-textured GaN interfaces via supercritical angle scattering

Spilios Riyopoulos, J. Cabalu, T. Moustakas

Proceedings Volume 6013, Optoelectronic Devices: Physics, Fabrication, and Application II; 60130G (2005) https://doi.org/10.1117/12.629518
Event: Optics East 2005, 2005, Boston, MA, United States

Abstract

A novel theoretical approach combining scattering theory with supercritical angle transmission is introduced for treating light incidence on nanotextured surfaces. The theory is used to evaluate enhanced light extraction from interfaces with sub-wavelength feature sizes, where the ray tracing approach breaks down. A unified analytic formula covering the transition from periodic to random surface texturing is obtained. The results will be compared with experimental enhanced light extraction results from GaN textured interfaces. The extraction efficiency is studied as a function of the average feature size and the rms deviation from the average values. It is argued that enhanced extraction occurs due to both supercritical transmission for single wave incidence, and the quick randomization of the incident wave-vector directions via internal scattering.

Citation Download Citation

Spilios Riyopoulos, J. Cabalu, and T. Moustakas "Enhanced light extraction through nano-textured GaN interfaces via supercritical angle scattering", Proc. SPIE 6013, Optoelectronic Devices: Physics, Fabrication, and Application II, 60130G (25 October 2005); https://doi.org/10.1117/12.629518

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