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Author: search.filters.author.Yindeesuk, W.Subject: search.filters.subject.Alq3

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    Temperature dependent photoluminescence of ZnSe/Alq3 hybrid heterostructure
    (2008-12-01)
    Pecharapa, W.
    ;
    Potirak, P.
    ;
    Yindeesuk, W.
    II-VI inorganic/organic heterostructures consisting of ZnSe and tris(8-hydroxyquinoline) aluminum (Alq<inf>3</inf>) were prepared by electron beam evaporator. Alq<inf>3</inf> layer with 20 nm was grown between 200-nm ZnSe layers. Photoluminescence measurement was conducted at various temperatures in order to investigate the important temperature-dependent parameters of this structure. PL spectra revealed thermal population of exciton state and the change in PL quantum efficiency of the film. © 2008 Trans Tech Publications, Switzerland.
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    Observation of optical transition energy in ZnSe/tris(8-hydroxyquinoline) aluminum (Alq3)/ZnSe single quantum wells by photoreflectance spectroscopy
    (2004-03-01)
    Nukeaw, J.
    ;
    Upprakhot, K.
    ;
    Rahong, S.
    ;
    Tunhoo, B.
    ;
    Yindeesuk, W.
    The optical transition energy in ZnSe/tris(8-hydroxyquinoline) aluminum (Alq3)/ZnSe single quantum wells (SQW) thin films with well thickness from 5 to 50 nm was investigated by room-temperature photoreflectance (PR) measurements. PR features due to optical transition energy were observed in the SQWs of well thicknesses. The transition energies were determined by fitting the PR spectra to the theoretical line-shape expression. The transition energy decreased with increasing well thickness. © 2003 Elsevier B.V. All rights reserved.