The electrical characteristics of Pt Schottky diodes fabricated on amorphous gallium indium zinc oxide were investigated. On the basis of Schottky theory with the thermionic emission mode, an effective Schottky barrier height (SBH) of 0.55 eV and an ideality factor of 3.38 were obtained. The anomalously high ideality factor could be attributed to the statistical potential variations of conduction band edges, as evidenced from the distinctive carrier transport through percolation hopping conduction. In this respect, the barrier inhomogeneity model was applied to obtain reasonable Schottky parameters, yielding the mean barrier height of 1.23 eV with a large standard deviation of 192 mV. (C) 2011 The Japan Society of Applied Physics
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Korea Univ, Dept Elect Engn, Anam Ro 145, Seoul 02841, South KoreaKorea Univ, Dept Elect Engn, Anam Ro 145, Seoul 02841, South Korea
Lee, Hosang
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Cho, Kyoungah
Kong, Heesung
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Korea Univ, Dept Elect Engn, Anam Ro 145, Seoul 02841, South KoreaKorea Univ, Dept Elect Engn, Anam Ro 145, Seoul 02841, South Korea
Kong, Heesung
Lee, Seungjun
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Samsung Display, Display Res Ctr, Samseong Ro 1, Yongin 17113, Gyeonggi Do, South KoreaKorea Univ, Dept Elect Engn, Anam Ro 145, Seoul 02841, South Korea
Lee, Seungjun
Lim, Junhyung
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Samsung Display, Display Res Ctr, Samseong Ro 1, Yongin 17113, Gyeonggi Do, South KoreaKorea Univ, Dept Elect Engn, Anam Ro 145, Seoul 02841, South Korea
Lim, Junhyung
Kim, Sangsig
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Korea Univ, Dept Elect Engn, Anam Ro 145, Seoul 02841, South KoreaKorea Univ, Dept Elect Engn, Anam Ro 145, Seoul 02841, South Korea
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Natl Inst Mat Phys, Lab Multifunct Mat & Struct, RO-077125 Magurele, RomaniaNatl Inst Mat Phys, Lab Multifunct Mat & Struct, RO-077125 Magurele, Romania
Galca, A. C.
Socol, G.
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Natl Inst Lasers Plasma & Radiat Phys, Lasers Dept, Laser Surface Plasma Interact Lab, RO-077125 Magurele, RomaniaNatl Inst Mat Phys, Lab Multifunct Mat & Struct, RO-077125 Magurele, Romania
Socol, G.
Craciun, V.
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Natl Inst Lasers Plasma & Radiat Phys, Lasers Dept, Laser Surface Plasma Interact Lab, RO-077125 Magurele, Romania
Univ Florida, Dept Mat Sci & Engn, Gainesville, FL 32611 USANatl Inst Mat Phys, Lab Multifunct Mat & Struct, RO-077125 Magurele, Romania