Improved contact properties of single-walled carbon nanotube on p-AlGaN layers after microwave post-treatment

Kyeong Heon Kim; Min Ju Yun; Sungho Kim; Hee Dong Kim

doi:10.1016/j.matchemphys.2020.123471

Improved contact properties of single-walled carbon nanotube on p-AlGaN layers after microwave post-treatment

Kyeong Heon Kim, Min Ju Yun, Sungho Kim, Hee Dong Kim

Semiconductor Engineering

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Abstract

We present improved contact and transparent properties of single-walled carbon nanotube (SWNT) transparent conductive electrodes (TCEs) on the p-AlGaN layer via a post microwave treatment (MWT) method. As a result, the contact resistance of the MWT-SWNT TCEs was observed to be 9.7 × 10-2 Ω·cm2, which was 26.5% lower than that of pristine sample, while the transmittance is improved by 1.6% (at the wavelengths of 365 nm) after the MWT. In addition, the results of material and chemical analyses show that these improvements might contribute to the reduction in the Schottky barrier height between the TCE and the p-AlGaN layer, through both a generation of Ga vacancies in p-AlGaN interface and a decrease of oxygen vacancies that can increase hole concentration in SWNTs.

Original language	English
Article number	123471
Journal	Materials Chemistry and Physics
Volume	252
DOIs	https://doi.org/10.1016/j.matchemphys.2020.123471
State	Published - 15 Sep 2020

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Publisher Copyright:
© 2020

Keywords

Microwave treatment method
Single-wall carbon nanotube
Transparent conductive electrodes

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10.1016/j.matchemphys.2020.123471

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title = "Improved contact properties of single-walled carbon nanotube on p-AlGaN layers after microwave post-treatment",

abstract = "We present improved contact and transparent properties of single-walled carbon nanotube (SWNT) transparent conductive electrodes (TCEs) on the p-AlGaN layer via a post microwave treatment (MWT) method. As a result, the contact resistance of the MWT-SWNT TCEs was observed to be 9.7 × 10-2 Ω·cm2, which was 26.5% lower than that of pristine sample, while the transmittance is improved by 1.6% (at the wavelengths of 365 nm) after the MWT. In addition, the results of material and chemical analyses show that these improvements might contribute to the reduction in the Schottky barrier height between the TCE and the p-AlGaN layer, through both a generation of Ga vacancies in p-AlGaN interface and a decrease of oxygen vacancies that can increase hole concentration in SWNTs.",

keywords = "Microwave treatment method, Single-wall carbon nanotube, Transparent conductive electrodes",

author = "Kim, {Kyeong Heon} and Yun, {Min Ju} and Sungho Kim and Kim, {Hee Dong}",

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doi = "10.1016/j.matchemphys.2020.123471",

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AU - Kim, Kyeong Heon

AU - Yun, Min Ju

AU - Kim, Sungho

AU - Kim, Hee Dong

PY - 2020/9/15

Y1 - 2020/9/15

N2 - We present improved contact and transparent properties of single-walled carbon nanotube (SWNT) transparent conductive electrodes (TCEs) on the p-AlGaN layer via a post microwave treatment (MWT) method. As a result, the contact resistance of the MWT-SWNT TCEs was observed to be 9.7 × 10-2 Ω·cm2, which was 26.5% lower than that of pristine sample, while the transmittance is improved by 1.6% (at the wavelengths of 365 nm) after the MWT. In addition, the results of material and chemical analyses show that these improvements might contribute to the reduction in the Schottky barrier height between the TCE and the p-AlGaN layer, through both a generation of Ga vacancies in p-AlGaN interface and a decrease of oxygen vacancies that can increase hole concentration in SWNTs.

AB - We present improved contact and transparent properties of single-walled carbon nanotube (SWNT) transparent conductive electrodes (TCEs) on the p-AlGaN layer via a post microwave treatment (MWT) method. As a result, the contact resistance of the MWT-SWNT TCEs was observed to be 9.7 × 10-2 Ω·cm2, which was 26.5% lower than that of pristine sample, while the transmittance is improved by 1.6% (at the wavelengths of 365 nm) after the MWT. In addition, the results of material and chemical analyses show that these improvements might contribute to the reduction in the Schottky barrier height between the TCE and the p-AlGaN layer, through both a generation of Ga vacancies in p-AlGaN interface and a decrease of oxygen vacancies that can increase hole concentration in SWNTs.

KW - Microwave treatment method

KW - Single-wall carbon nanotube

KW - Transparent conductive electrodes

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JO - Materials Chemistry and Physics

JF - Materials Chemistry and Physics

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ER -

Improved contact properties of single-walled carbon nanotube on p-AlGaN layers after microwave post-treatment

Abstract

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Keywords

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