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INVESTIGATION ON DEVICE CHARACTERISTICS OF n-CdS/p-Ag(Ga-In)Te2 HETEROJUNCTION DIODE

Author

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  • Ö. BAYRAKLI

    (Physics Department, Middle East Technical University, Ankara 06800, Turkey2Physics Department, Ahi Evran University, Kırşehir 40200, Turkey3The Center of Solar Energy Research and Applications, (GÜNAM), Middle East Technical University, Ankara 06800, Turkey)

  • H. H. GÜLLÜ

    (The Center of Solar Energy Research and Applications, (GÜNAM), Middle East Technical University, Ankara 06800, Turkey4Central Laboratory, Middle East Technical University, Ankara 06800, Turkey)

  • M. PARLAK

    (Physics Department, Middle East Technical University, Ankara 06800, Turkey3The Center of Solar Energy Research and Applications, (GÜNAM), Middle East Technical University, Ankara 06800, Turkey)

Abstract

This work indicates the device properties of polycrystalline p-AgGaInTe2 (AGIT) thin films deposited on bare and ITO-coated glass substrates with thermal evaporation technique. Device characteristics of n-CdS/p-AGIT heterostructure have been analyzed in terms of current–voltage (I–V) for different temperatures and capacitance–voltage (C–V) measurements for different frequencies, respectively. The series and shunt resistances were determined from the analysis of parasitic resistance for high forward and reverse bias voltages, respectively. The ideality factors were evaluated from I–V variation at each sample temperature as lying in between 2.51 and 3.25. The barrier height was around 0.79eV at room temperature. For low bias region, the variation in the diode parameters due to the sample temperature exhibited the thermionic emission with T0 anomaly, whereas space-charge-limited current analysis was also found to be pre-dominant carrier transport mechanism for this heterostructure. From C–V measurements, the obtained built-in potential and series resistances were found to be in good agreement with I–V results.

Suggested Citation

  • Ö. Bayrakli & H. H. Güllü & M. Parlak, 2018. "INVESTIGATION ON DEVICE CHARACTERISTICS OF n-CdS/p-Ag(Ga-In)Te2 HETEROJUNCTION DIODE," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 25(05), pages 1-10, July.
    • Handle: RePEc:wsi:srlxxx:v:25:y:2018:i:05:n:s0218625x1850107x
    DOI: 10.1142/S0218625X1850107X
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