Open AccessPreparation and photoluminescence study of patterned substrate quantum wires
Author(s) -
Xiuping Wang,
Xiaohong Yang,
Qin Han,
JU Yan-ling,
Ying Du,
Bin Zhu,
Jie Wang,
Haiqiao Ni,
He Ji-Fang,
Guowei Wang,
Zhichuan Niu
Publication year - 2011
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.60.020703
Subject(s) - photoluminescence , materials science , molecular beam epitaxy , groove (engineering) , substrate (aquarium) , quantum wire , quantum dot , quantum , quantum well , optoelectronics , epitaxy , condensed matter physics , optics , nanotechnology , physics , laser , layer (electronics) , quantum mechanics , oceanography , geology , metallurgy
GaAs/AlGaAs quantum wires grown by molecular beam epitaxy on a V-groove patterned substrate was described. The cross section of scan electron microscopy (SEM) image shows that crescent-type quantum wire were formed at the V groove bottom, which is a triangle of about 60nm in width and 14nm in height. Two peaks at 793.7nm and 799.5nm of photoluminescence spectrum at 87K verified the existence of quantum wires. Theoretical calculation gives 8meV blue shift, which is proved to be casued by lateral confinement compared with quantum well of the same width.