DocumentCode
1198883
Title
Enhancement in external quantum efficiency of blue light-emitting diode by photonic crystal surface grating
Author
Kim, T. ; Danner, A.J. ; Choquette, K.D.
Author_Institution
Micro & Nanotechnol. Lab., Univ. of Illinois Urbana-Champaign, Urbana, IL, USA
Volume
41
Issue
20
fYear
2005
Firstpage
1138
Lastpage
1139
Abstract
Blue photonic crystal light-emitting diodes were evaluated with photonic crystal hole patterns. The diameter of the holes, lattice constant, and emission wavelength were selected to be 110, 220 and 450 nm, respectively, to attain a maximum enhancement in the wall-plug efficiency. The improvement in external quantum efficiency was 30-50%. Changes in voltage characteristics caused by the etched holes were found to be correlated with increased leakage current.
Keywords
leakage currents; light emitting diodes; optical materials; photonic crystals; 110 nm; 220 nm; 450 nm; blue light-emitting diode; etched holes; external quantum efficiency; hole patterns; leakage current; photonic crystal surface grating; voltage characteristics; wall-plug efficiency;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:20052643
Filename
1522173
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