In this work, we studied the electrical characteristics of TaN/HfO2/GaAs metal-oxide-semiconductor capacitors with Si interface passivation layer (IPL) under various postdeposition anneal (PDA) conditions and various Si deposition temperatures/times. Using optimal Si IPL under reasonable PDA, post metal anneal conditions, and various Si deposition temperatures, excellent electrical characteristics with low frequency dispersion (< 5%, and 50 mV) and reasonable D-it value (similar to 10(12) eV(-1) cm(-2)) can be obtained. It was found that higher temperature of Si IPL deposition and longer PDA time at 600 degrees C improved equivalent oxide thickness and leakage current. (c) 2007 American Institute of Physics.
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Indian Inst Technol, Ctr Mat Sci, Kharagpur 721302, W Bengal, IndiaIndian Inst Technol, Ctr Mat Sci, Kharagpur 721302, W Bengal, India
Kundu, Souvik
Halder, Nripendra N.
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Indian Inst Technol, Adv Technol Dev Ctr, Kharagpur 721302, W Bengal, IndiaIndian Inst Technol, Ctr Mat Sci, Kharagpur 721302, W Bengal, India
Halder, Nripendra N.
Biswas, D.
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Indian Inst Technol, Dept Elect & Elect Commun Engn, Kharagpur 721302, W Bengal, IndiaIndian Inst Technol, Ctr Mat Sci, Kharagpur 721302, W Bengal, India
Biswas, D.
Banerji, P.
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Indian Inst Technol, Ctr Mat Sci, Kharagpur 721302, W Bengal, IndiaIndian Inst Technol, Ctr Mat Sci, Kharagpur 721302, W Bengal, India
Banerji, P.
Shripathi, T.
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UGC DAE Consortium Sci Res, Indore 452001, Madhya Pradesh, IndiaIndian Inst Technol, Ctr Mat Sci, Kharagpur 721302, W Bengal, India
Shripathi, T.
Chakraborty, S.
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Saha Inst Nucl Phys, Appl Mat Sci Div, Kolkata 700064, IndiaIndian Inst Technol, Ctr Mat Sci, Kharagpur 721302, W Bengal, India
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Department of Electrical and Computer Engineering, Purdue University, West Lafayette, IN 47906, United StatesDepartment of Electrical and Computer Engineering, Purdue University, West Lafayette, IN 47906, United States
Xu, Min
Gu, Jiangjiang J.
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Department of Electrical and Computer Engineering, Purdue University, West Lafayette, IN 47906, United StatesDepartment of Electrical and Computer Engineering, Purdue University, West Lafayette, IN 47906, United States
Gu, Jiangjiang J.
Wang, Chen
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Department of Electrical and Computer Engineering, Purdue University, West Lafayette, IN 47906, United StatesDepartment of Electrical and Computer Engineering, Purdue University, West Lafayette, IN 47906, United States
Wang, Chen
Zhernokletov, D.M.
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Department of Materials Science and Engineering, University of Texas at Dallas, Richardson, TX 75080, United StatesDepartment of Electrical and Computer Engineering, Purdue University, West Lafayette, IN 47906, United States
Zhernokletov, D.M.
Wallace, R.M.
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Department of Materials Science and Engineering, University of Texas at Dallas, Richardson, TX 75080, United StatesDepartment of Electrical and Computer Engineering, Purdue University, West Lafayette, IN 47906, United States
Wallace, R.M.
Ye, Peide D.
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Department of Electrical and Computer Engineering, Purdue University, West Lafayette, IN 47906, United StatesDepartment of Electrical and Computer Engineering, Purdue University, West Lafayette, IN 47906, United States