Open AccessThe electroluminescence spectra of dual wavelength GaN-based light emitting diodes
Author(s) -
Xiuquan Gu,
Guo Xia,
Ting Liang,
Quan Lin,
Jian Guo,
Wu Di,
Xu Li-Hua,
Shen Guang-di
Publication year - 2007
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.56.5531
Subject(s) - electroluminescence , optoelectronics , materials science , light emitting diode , wavelength , diode , spectral line , dual (grammatical number) , optics , physics , nanotechnology , art , literature , layer (electronics) , astronomy
GaN-based dual-wavelength light emitting diodes (LEDs) with different In contents in the wells and barriers was designed and fabrieated in our experiment. Electroluminescence of the fabricated LED at the typical driving current of 20mA has two colorsblue and green respectively. The ratio of the intensities of the green light to the blue light increases with increasing driving current. At larger currentthe blue shift of the peak wavelength of the green light was greater than that of the blue light. We are also concerned with the effect of polarization and non-uniform carrier distribution in the active region. Using coupled method of simulationthe calculated data were consistent with the experiment.