STRUCTURAL, OPTICAL AND ELECTRICAL PROPERTIES OF CHEMICAL BATH DEPOSITED PBS/CDSFILMS GROWN ON DIFFERENT SUBSTRATES

Authors : Gokhan BARİKAN, Hüseyim ERTAP, Mustafa YÜKSEK, Hasan MAMMADOV, Mevlüt KARABULUT

Pages : 16-25

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Publication Date : 2014-12-31

Article Type : Research Paper

Abstract :PbS/CdS bilayer thin films have been grown on glass, GaSe, and InSe substrates by chemical bath deposition. Structural, morphological, optical and electrical properties have been studied by X-ray diffraction insert ignore into journalissuearticles values(XRD);, Atomic Force Microscopy insert ignore into journalissuearticles values(AFM);, optical absorption and I-V measurements. The PbS/CdS layers have been found to grow with cubic and hexagonal structure and showed preferred orientation in insert ignore into journalissuearticles values(200); and insert ignore into journalissuearticles values(002); planes, respectively.  The particle sizes and energy bang gaps of PbS/CdS films have been shown to be substrate dependent. Particle sizes of PbS/CdS films grown on glass, GaSe and InSe substrates determined from AFM images were in the 81-301 nm range while direct band gap energies calculated from optic absorption spectra were in the 1.22-1.98 eV range.The PbS/CdS bilayers have been shown to be photosensitive through I-V measurements.
Keywords : PbS CdS thin films, CBD, XRD, optic absorption