TY - JOUR
T1 - Determination of Carrier-transfer length from side-wall quantum well to quantum wire by micro-photoluminescence scanning
AU - Li, Z. F.
AU - Lu, W.
AU - Liu, X. Q.
AU - Chen, X. S.
AU - Shen, S. C.
AU - Fu, Y.
AU - Willander, M.
AU - Tan, H. H.
AU - Jagadish, C.
PY - 2003/8
Y1 - 2003/8
N2 - Micro-photoluminescence (μ-PL) line scanning across a single V-groove, GaAs/AlGaAs quantum wire (QWR) has been performed at room temperature, revealing a clear spatial-dependence of the PL. After fitting each PL spectrum by multi-Gaussian line shapes, intensity profiles of each PL component from confined structures have been obtained as functions of the scanning position. The PL quenching of a side-wall quantum well (SQWL) has been recognized in a certain area in the vicinity of the QWR and is interpreted by carrier transfer into the QWR within effective transfer length. By simulating the carrier-transfer process from SQWL to QWR as a convolution of a step function for carrier distribution and a Gaussian function for exciting laser irradiance, the effective transfer length of about 1.8 ± 0.3 μm has, therefore, been concluded.
AB - Micro-photoluminescence (μ-PL) line scanning across a single V-groove, GaAs/AlGaAs quantum wire (QWR) has been performed at room temperature, revealing a clear spatial-dependence of the PL. After fitting each PL spectrum by multi-Gaussian line shapes, intensity profiles of each PL component from confined structures have been obtained as functions of the scanning position. The PL quenching of a side-wall quantum well (SQWL) has been recognized in a certain area in the vicinity of the QWR and is interpreted by carrier transfer into the QWR within effective transfer length. By simulating the carrier-transfer process from SQWL to QWR as a convolution of a step function for carrier distribution and a Gaussian function for exciting laser irradiance, the effective transfer length of about 1.8 ± 0.3 μm has, therefore, been concluded.
KW - Carrier-transfer length
KW - Micro-photoluminescence
KW - V-groove quantum wire
UR - http://www.scopus.com/inward/record.url?scp=0041438893&partnerID=8YFLogxK
U2 - 10.1007/s11664-003-0209-9
DO - 10.1007/s11664-003-0209-9
M3 - Article
SN - 0361-5235
VL - 32
SP - 913
EP - 916
JO - Journal of Electronic Materials
JF - Journal of Electronic Materials
IS - 8
ER -