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題名: Ohmic Performance Comparison for Ti/Ni/Au and Ti/Pt/Au on InAs/graded InGaAs/GaAs Layers
作者: Lyu, Yen-Tang;Jaw, Kuo-Liang;Lee, Ching-Ting;Tsai, Chang-Da;Lin, Yow-Jon;Cherng, Ya-Tung
貢獻者: 光電科技研究所
關鍵詞: Nonalloyed ohmic contact;Metal-semiconductor contact;Specific contact resistance
日期: 2000-02
上傳時間: 2013-10-02T08:35:25Z
出版者: Elsevier B. V.
摘要: Metallization systems of Ti/Ni/Au and Ti/Pt/Au were deposited onto InAs/graded InGaAs/GaAs epitaxial layers grown on GaAs substrate. Both of them exhibit good nonalloyed specific contact resistance of 1.0 × 10−6 and 3.0 × 10−6 Ω cm2 for Ti/Pt/Au and Ti/Ni/Au metallization systems, respectively. However, the thermal stability can be achieved at least up to 350°C for Ti/Pt/Au metallization system, while the Ti/Ni/Au metallization can only thermally stabilize at 250°C. The degradation of the specific contact resistance at high annealing temperature is attributed to the induced decomposition of InAs and graded InGaAs layers. Rutherford backscattering spectroscopy spectra and Auger electron spectroscopy depth profile were used to study the physical mechanism.
關聯: Materials Chemistry and Physics, 63(2): 122-126
顯示於類別:[光電科技研究所] 期刊論文

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