Excellent Au/Ge/Pd ohmic contacts to n-type GaAs using Mo/Ti as the diffusion barrier

Chun Yi Chai; Jung A. Huang; Yong Lin Lai; Janne Wha Wu; Chun Yen Chang; Yi Jen Chan; Huang Chung Cheng

doi:10.1143/jjap.35.2110

Excellent Au/Ge/Pd ohmic contacts to n-type GaAs using Mo/Ti as the diffusion barrier

Chun Yi Chai, Jung A. Huang, Yong Lin Lai, Janne Wha Wu, Chun Yen Chang, Yi Jen Chan, Huang Chung Cheng

機電工程學系

研究成果: Article › 同行評審

5 引文斯高帕斯（Scopus）

摘要

Au/Ge/Pd metallization system using Mo/Ti as the diffusion barrier between the Au overlayer and the Ge/Pd underlayer has been performed for the first time to achieve excellent ohmic contacts to n⁺-GaAs with the Sidoping concentration of about 2 × 10¹⁸ cm^-3. The minimum specific contact resistivity as low as 1.2 × 10^-7 Ω·cm² can be obtained after the rapid thermal annealing at 325°C for 60 s, which is much lower than those of the conventional Au/Ge/Pd metallization systems. Furthermore, the available annealing temperature range for such low specific contact resistivities is also significantly extended from 325°C to 400°C. The improvement is attributed to the effective retardation of As-outdiffusion by the Mo/Ti barrier.

原文	English
頁（從 - 到）	2110-2111
頁數	2
期刊	Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
卷	35
發行號	4 A
DOIs	https://doi.org/10.1143/jjap.35.2110
出版狀態	Published - 1996 四月

All Science Journal Classification (ASJC) codes

Engineering(all)
Physics and Astronomy(all)

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10.1143/jjap.35.2110

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title = "Excellent Au/Ge/Pd ohmic contacts to n-type GaAs using Mo/Ti as the diffusion barrier",

abstract = "Au/Ge/Pd metallization system using Mo/Ti as the diffusion barrier between the Au overlayer and the Ge/Pd underlayer has been performed for the first time to achieve excellent ohmic contacts to n+-GaAs with the Sidoping concentration of about 2 × 1018 cm-3. The minimum specific contact resistivity as low as 1.2 × 10-7 Ω·cm2 can be obtained after the rapid thermal annealing at 325°C for 60 s, which is much lower than those of the conventional Au/Ge/Pd metallization systems. Furthermore, the available annealing temperature range for such low specific contact resistivities is also significantly extended from 325°C to 400°C. The improvement is attributed to the effective retardation of As-outdiffusion by the Mo/Ti barrier.",

author = "Chai, {Chun Yi} and Huang, {Jung A.} and Lai, {Yong Lin} and Wu, {Janne Wha} and Chang, {Chun Yen} and Chan, {Yi Jen} and Cheng, {Huang Chung}",

year = "1996",

month = apr,

doi = "10.1143/jjap.35.2110",

language = "English",

volume = "35",

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Excellent Au/Ge/Pd ohmic contacts to n-type GaAs using Mo/Ti as the diffusion barrier. / Chai, Chun Yi; Huang, Jung A.; Lai, Yong Lin; Wu, Janne Wha; Chang, Chun Yen; Chan, Yi Jen; Cheng, Huang Chung.

於: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, 卷 35, 編號 4 A, 04.1996, p. 2110-2111.

研究成果: Article › 同行評審

TY - JOUR

T1 - Excellent Au/Ge/Pd ohmic contacts to n-type GaAs using Mo/Ti as the diffusion barrier

AU - Chai, Chun Yi

AU - Huang, Jung A.

AU - Lai, Yong Lin

AU - Wu, Janne Wha

AU - Chang, Chun Yen

AU - Chan, Yi Jen

AU - Cheng, Huang Chung

PY - 1996/4

Y1 - 1996/4

N2 - Au/Ge/Pd metallization system using Mo/Ti as the diffusion barrier between the Au overlayer and the Ge/Pd underlayer has been performed for the first time to achieve excellent ohmic contacts to n+-GaAs with the Sidoping concentration of about 2 × 1018 cm-3. The minimum specific contact resistivity as low as 1.2 × 10-7 Ω·cm2 can be obtained after the rapid thermal annealing at 325°C for 60 s, which is much lower than those of the conventional Au/Ge/Pd metallization systems. Furthermore, the available annealing temperature range for such low specific contact resistivities is also significantly extended from 325°C to 400°C. The improvement is attributed to the effective retardation of As-outdiffusion by the Mo/Ti barrier.

AB - Au/Ge/Pd metallization system using Mo/Ti as the diffusion barrier between the Au overlayer and the Ge/Pd underlayer has been performed for the first time to achieve excellent ohmic contacts to n+-GaAs with the Sidoping concentration of about 2 × 1018 cm-3. The minimum specific contact resistivity as low as 1.2 × 10-7 Ω·cm2 can be obtained after the rapid thermal annealing at 325°C for 60 s, which is much lower than those of the conventional Au/Ge/Pd metallization systems. Furthermore, the available annealing temperature range for such low specific contact resistivities is also significantly extended from 325°C to 400°C. The improvement is attributed to the effective retardation of As-outdiffusion by the Mo/Ti barrier.

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