Improved Thermal Stability CrB2 Contacts on ZnO
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概要
- 論文の詳細を見る
Most common contact metals show low thermal stabilities on ZnO and there is a clear need for more thermally stable metallization. The formation of rectifying contacts on n-type bulk single crystal ZnO using CrB2 was studied using current–voltage, scanning electron microscopy (SEM) and Auger Electron Spectroscopy (AES) measurements. When a single Au overlayer was used to reduce the metal sheet resistance, the contacts were ohmic for all annealing conditions. Under these conditions, both Zn and O were observed to outdiffuse from the ZnO. When a bilayer of Pt/Au was used on top of the CrB2 layers, rectifying contacts with barrier heights of ${\sim}0.4$ eV were obtained after annealing at 600°C, although at this condition the contact showed a reacted appearance and AES showed the onset of intermixing of the metallization. At higher anneal temperatures (700°C) the contact metallization showed blistering and loss of adhesion.
- 2005-10-15
著者
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Chi G.
Department Of Pathology Seoul National University Children's Hospital Seoul National University
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Ip K.
Department Of Zoology National University Of Singapore
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PEARTON S.
Department of Materials Science and Engineering, University of Florida
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Kao C.
Department Of Chemical Engineering National Central University
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Norton D.
Department of Materials Science and Engineering, University of Florida, Gainesville, FL 32611, U.S.A.
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Ren F.
Department of Chemical Engineering, University of Florida, Gainesville, FL 32611, U.S.A.
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Khanna Rohit
Department of Materials Science and Engineering, University of Florida, Gainesville, FL 32611, U.S.A.
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Kravchenko I.
Department of Physics, University of Florida, Gainesville, FL 32611, U.S.A.
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Kao C.
Department of Materials Science and Engineering, University of Florida, Gainesville, FL 32611, U.S.A.
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Ip K.
Department of Materials Science and Engineering, University of Florida, Gainesville, FL 32611, U.S.A.
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