Journal
VACUUM
Volume 148, Issue -, Pages 168-172Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.vacuum.2017.11.014
Keywords
InGaN; InGaN/GaN multiple quantum wells (MQW); LED; Metalorganic chemical vapor deposition (MOCVD); p-GaN; Hydrogen-free epitaxy
Funding
- OEM Group Inc.
- DOE [DESC0015252]
- Lightwave Photonics Inc.
Ask authors/readers for more resources
Two types of 3-period In14Ga86N/GaN multiple quantum well light-emitting diodes (LEDs) were studied, differing only in the conditions under which their p-GaN layers were grown by metalorganic chemical vapor deposition. The p-GaN of one type of LED was grown with a carrier gas mixture of N-2/H-2. A carrier gas of only N-2 was used to grow the p-GaN of the second type of LED at a relatively elevated temperature, making the entire structure grown in pure N-2 alone. Subsequently the growth, fabrication and characterization of each type of LED were methodologically studied. Based on the XRD analysis, the thickness of the well, barrier and In composition of the LED structures were estimated to be 2.5 nm, 8.5 nm and x = 14%, respectively. Finally, the electroluminescence output of these devices was evaluated at a current of 20 mA at room temperature. It was observed that the LED structure grown with nitrogen-only carrier gas had approximately 25% superior electroluminescence. (C) 2017 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available