Summary of deep level defect characteristics in GaN and AlGaN

Daniel Johnstone

doi:10.1117/12.709709

8 February 2007 Summary of deep level defect characteristics in GaN and AlGaN

Daniel Johnstone

Proceedings Volume 6473, Gallium Nitride Materials and Devices II; 64730L (2007) https://doi.org/10.1117/12.709709
Event: Integrated Optoelectronic Devices 2007, 2007, San Jose, California, United States

Abstract

The characteristics of defects that are predicted to be dominant for n-GaN or p-GaN are reviewed, and compared to measurements. Measurements are discussed to extract the concentration, transition energy, charge state, and lattice relaxation, each of which can be predicted from theory. Additional considerations are discussed related to the defects that are expected to occur in highest concentration. All of the native defects with transitions in the band gap are expected to act as minority carrier traps, in spite of the predominance of characterization using majority carrier devices. Defects detected by deep level transient spectroscopy are also frequently cited as being associated with a dislocation based on the capture kinetics. Possibilities for other capture mechanisms exist and are modeled along with capture at a dislocation in order to provide a method to distinguish between the mechanisms. This work provides a framework for systematically progressing towards identifying the composition of defects.

Citation Download Citation

Daniel Johnstone "Summary of deep level defect characteristics in GaN and AlGaN", Proc. SPIE 6473, Gallium Nitride Materials and Devices II, 64730L (8 February 2007); https://doi.org/10.1117/12.709709

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