1 Ocak 2017 Konferans bildirisi Açık Erişim

Karaagac, Hakan; Peksu, Elif; Behzad, Hamed; Akgoz, Sare; Parlak, Mehmet

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    <subfield code="a">Characterization of CuIn0.7Ga0.3Se2 Thin Films Deposited by Single Stage Thermal Evaporation Process</subfield>
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    <subfield code="a">Single phase CuIn0.7Ga0.3Se2 (CIGS) thin films are successfully deposited on glass substrates via a single stage thermal evaporation from a stoichiometric powder of CIGS. X-ray photoelectron spectroscopy measurements reveal the existence of Cu- and Ga-rich surface of the as-grown CIGS thin films. The post-growth annealing process lead to migration of the metallic atoms from the surface region into the bulk during the crystallization process, which subsequently causes a significant reduction in the reflection and a change in the mechanism of conduction. From the photoconductivity measurements it was deduced that the deposited CIGS films demonstrated a drastic decrease in resistivity under different illumination intensities. The post-growth annealing effect on the morphology and structure of CIGS thin films is investigated by means of the atomic force microscopy and X-ray diffraction measurements, respectively. Results show that there is a significant change in surface roughness as well as in degree of crystallinity of the films following the annealing process at different temperatures.</subfield>
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    <subfield code="u">Istanbul Tech Univ, Dept Engn Phys, TR-34469 Istanbul, Turkey</subfield>
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    <subfield code="a">PHYSICA STATUS SOLIDI C: CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 14 NO 12</subfield>
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