Al<sub>2</sub>O<sub>3</sub> Growth on (100) In<sub>0.53</sub>Ga<sub>0.47</sub>As Initiated by Cyclic Trimethylaluminum and Hydrogen Plasma Exposures
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概要
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The influence of hydrogen plasma treatment before atomic layer deposition of aluminum oxide on In<sub>0.53</sub>Ga<sub>0.47</sub>As is investigated. Experiments on untreated, trimethylaluminum-treated, hydrogen-plasma treated, and iterative hydrogen plasma/trimethylaluminum-treated samples are compared in the context of interface trap density, $D_{\text{it}}$. Through the conductance method, it was found that five cycles of two s, 20 mT, 100 W hydrogen plasma alternating with 40 msS of trimethylaluminum dose prior to dielectric growth resulted in a reduction of interface trap density (0.2 eV below the conduction band edge) from $4.6\times 10^{12}$ eV-1 cm-2 for untreated samples to $1.7\times 10^{12}$ eV-1 cm-2 for treated samples.
- 2011-09-25
著者
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Mitchell William
Department Of Electrical And Computer Engineering University Of California
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Carter Andrew
Department Of Electrical And Computer Engineering University Of California
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Law Jeremy
Department Of Electrical And Computer Engineering University Of California
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RODWELL Mark
Department of Electrical and Computer Engineering, University of California
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Thibeault Brian
Department of Electrical and Computer Engineering, University of California, Santa Barbara, CA 93106, U.S.A.