Steady-state junction current distribution in p-n GaN diodes measured using low-energy electron microscopy (LEEM)-Reference-Cited by-同舟云学术

Steady-state junction current distribution in p-n GaN diodes measured using low-energy electron microscopy (LEEM)

Published:2023-07-17 Issue:3 Volume:123 Page:
ISSN:0003-6951
Container-title:Applied Physics Letters
language:en
Short-container-title:

Author:

Ho Wan Ying¹^ORCID,Johnson Cameron W.²,Tak Tanay¹^ORCID,Sauty Mylène³^ORCID,Chow Yi Chao¹^ORCID,Nakamura Shuji¹⁴^ORCID,Schmid Andreas²^ORCID,Peretti Jacques³^ORCID,Weisbuch Claude¹³^ORCID,Speck James S.¹^ORCID

Affiliation:

1. Materials Department, University of California 1 , Santa Barbara, California 93106-5050, USA

2. Molecular Foundry, Lawrence Berkeley National Laboratory 2 , One Cyclotron Road, Building 67, Berkeley, California 94720, USA

3. Laboratoire de Physique de la Matière Condensée, CNRS, Ecole Polytechnique 3 , IP Paris , 91120 Palaiseau, France

4. Department of Electrical Engineering, University of California 4 , Santa Barbara, California 93106-5050, USA

Abstract

We report on the measurement of the lateral distribution of the junction current of an electrical biased p-n GaN diode by electron emission microscopy using a low-energy electron microscope. The vacuum level at the surface of the diode was lowered by deposition of cesium to achieve negative electron affinity, allowing overflow electrons at the surface of the biased diodes to be emitted and their spatial distribution imaged. The results were compared to the literature, and a good match with analytical solutions by Joyce and Wemple [J. Appl. Phys. 41, 3818 (1970)] was obtained.

Funder

Solid State Lighting and Energy Electronics Center, University of California Santa Barbara

Collaborative Research in Engineering, Science and Technology Centre

Office of Energy Efficiency and Renewable Energy

Simons Foundation

National Science Foundation

Sandia National Laboratories

Office of Science

Publisher

AIP Publishing

Subject

Physics and Astronomy (miscellaneous)