High reflectivity ultraviolet distributed Bragg reflector based on AlGaN/AlGaN multilayer

Ryoko Shimada; Jinqiao Xie; Hadis Morkoç

doi:10.1117/12.707886

8 February 2007 High reflectivity ultraviolet distributed Bragg reflector based on AlGaN/AlGaN multilayer

Ryoko Shimada, Jinqiao Xie, Hadis Morkoç

Proceedings Volume 6473, Gallium Nitride Materials and Devices II; 64731H (2007) https://doi.org/10.1117/12.707886
Event: Integrated Optoelectronic Devices 2007, 2007, San Jose, California, United States

Abstract

AlGaN/AlGaN distributed Bragg reflectors (DBRs) designed for the ultraviolet spectral region have been attained. The crack-free structures were grown on c-plane sapphire by plasma assisted molecular beam epitaxy (MBE). To minimize the built-in strain in DBRs, a thin buffer layer was used directly on c-plane sapphire. A peak reflectivity of 95% at 381 nm with a 21 nm stop band width was obtained at room temperature (RT) using a 32.5 pairs Al_0.7Ga_0.3N/Al_0.15Ga_0.85N DBR. With a driving force for DBRs and emitting regions in wide band gap semiconductor microcavities, such as those based on GaN and ZnO, is the quest for cavity polariton which is the coupled mode between the exciton and photon modes. Moreover, the exploitation of cavity polaritons could be expected in the course of the development of extremely low-threshold optoelectronics devices.

Citation Download Citation

Ryoko Shimada, Jinqiao Xie, and Hadis Morkoç "High reflectivity ultraviolet distributed Bragg reflector based on AlGaN/AlGaN multilayer", Proc. SPIE 6473, Gallium Nitride Materials and Devices II, 64731H (8 February 2007); https://doi.org/10.1117/12.707886

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