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Investigation of Localized and Conventional Photoluminescence in an Asymmetric Quantum Well

✍ Scribed by Morais, P.C. ;Sakai, J.W.L.

Publisher
John Wiley and Sons
Year
2001
Tongue
English
Weight
116 KB
Volume
187
Category
Article
ISSN
0031-8965

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✦ Synopsis

Conventional and localized photoluminescence (PL) are investigated in an n-type asymmetrically doped InGaAs/InP quantum well (QW), using focused laser-beam excitation. We observed a novel red shift in the PL spectra and also the presence of an additional transition, under high optical excitation intensity. We provide evidence that these observations are related to the occurrence of photocarrier accumulation in the QW in a process distinct from the well-known optical control of the electron accumulation.

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