In:
International Journal of High Speed Electronics and Systems, World Scientific Pub Co Pte Ltd, Vol. 21, No. 01 ( 2012-03), p. 1250011-
Abstract:
We discuss physics, design, fabrication, performance, and selected applications of Deep Ultraviolet Light Emitting Diodes (DUV LEDs). Our analysis reveals the relative contributions of electrical injection, internal quantum efficiency, and light extraction efficiency to the overall DUV LED performance. Our calculations show that the reduction of the dislocation density at least below value of 2×10 8 1/cm 3 is necessary for reaching high DUV LED efficiency. Better light extraction has been achieved using an innovative p-type transparent sub-contact layer and reflecting ohmic p-type contact resulting in nearly tripling DUV LED power. At high power dissipation, temperature rise might be significant, and we present data showing the power degradation with temperature increase and the results of the detailed 1D and 3D analysis of thermal impedance of DUV LEDs. As an example of DUV LED application, we report on microbial disinfection using 19 watt 275 nanometer DUV LED.
Type of Medium:
Online Resource
ISSN:
0129-1564
,
1793-6438
DOI:
10.1142/S0129156412500115
Language:
English
Publisher:
World Scientific Pub Co Pte Ltd
Publication Date:
2012
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