Bilayer graphene based surface passivation enhanced nano structured self-powered near-infrared photodetector

Longhui Zeng; Chao Xie; Lili Tao; Hui Long; Chunyin Tang; Yuen Hong Tsang; Jiansheng Jie

doi:10.1364/OE.23.004839

Bilayer graphene based surface passivation enhanced nano structured self-powered near-infrared photodetector

Longhui Zeng, Chao Xie, Lili Tao, Hui Long, Chunyin Tang, Yuen Hong Tsang, Jiansheng Jie

Research output: Journal article publication › Journal article › Academic research › peer-review

32 Citations (Scopus)

Abstract

A simple methyl-terminated (-CH3) surface passivation approach has been employed to enhance the performance of the bilayer graphene/Si nanohole array (BLG/SiNH array) Schottky junction based self-powered near infrared photodetector (SPNIRPD). The as-fabricated SPNIRPD exhibits high sensitivity to light at near infrared region at zero bias voltage. The Ilight/Idarkratio measured is 1.43 × 107, which is more than an order of magnitude improvement compared with the sample without passivation (∼6.4 × 1051). Its corresponding responsivity and detectivity are 0.328 AW-1and 6.03 × 1013cmHz1/2W-1, respectively. The demonstrated results have confirmed the high-performance SPNIRPD compared with the photodetectors of similar type and its great potential application in future optoelectronic devices.

Original language	English
Pages (from-to)	4839-4846
Number of pages	8
Journal	Optics Express
Volume	23
Issue number	4
DOIs	https://doi.org/10.1364/OE.23.004839
Publication status	Published - 1 Jan 2015

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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10.1364/OE.23.004839

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title = "Bilayer graphene based surface passivation enhanced nano structured self-powered near-infrared photodetector",

abstract = "A simple methyl-terminated (-CH3) surface passivation approach has been employed to enhance the performance of the bilayer graphene/Si nanohole array (BLG/SiNH array) Schottky junction based self-powered near infrared photodetector (SPNIRPD). The as-fabricated SPNIRPD exhibits high sensitivity to light at near infrared region at zero bias voltage. The Ilight/Idarkratio measured is 1.43 × 107, which is more than an order of magnitude improvement compared with the sample without passivation (∼6.4 × 1051). Its corresponding responsivity and detectivity are 0.328 AW-1and 6.03 × 1013cmHz1/2W-1, respectively. The demonstrated results have confirmed the high-performance SPNIRPD compared with the photodetectors of similar type and its great potential application in future optoelectronic devices.",

author = "Longhui Zeng and Chao Xie and Lili Tao and Hui Long and Chunyin Tang and Tsang, {Yuen Hong} and Jiansheng Jie",

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Bilayer graphene based surface passivation enhanced nano structured self-powered near-infrared photodetector. / Zeng, Longhui; Xie, Chao; Tao, Lili; Long, Hui; Tang, Chunyin; Tsang, Yuen Hong; Jie, Jiansheng.

In: Optics Express, Vol. 23, No. 4, 01.01.2015, p. 4839-4846.

Research output: Journal article publication › Journal article › Academic research › peer-review

TY - JOUR

T1 - Bilayer graphene based surface passivation enhanced nano structured self-powered near-infrared photodetector

AU - Zeng, Longhui

AU - Xie, Chao

AU - Tao, Lili

AU - Long, Hui

AU - Tang, Chunyin

AU - Tsang, Yuen Hong

AU - Jie, Jiansheng

PY - 2015/1/1

Y1 - 2015/1/1

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AB - A simple methyl-terminated (-CH3) surface passivation approach has been employed to enhance the performance of the bilayer graphene/Si nanohole array (BLG/SiNH array) Schottky junction based self-powered near infrared photodetector (SPNIRPD). The as-fabricated SPNIRPD exhibits high sensitivity to light at near infrared region at zero bias voltage. The Ilight/Idarkratio measured is 1.43 × 107, which is more than an order of magnitude improvement compared with the sample without passivation (∼6.4 × 1051). Its corresponding responsivity and detectivity are 0.328 AW-1and 6.03 × 1013cmHz1/2W-1, respectively. The demonstrated results have confirmed the high-performance SPNIRPD compared with the photodetectors of similar type and its great potential application in future optoelectronic devices.

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DO - 10.1364/OE.23.004839

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JO - Optics Express

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SN - 1094-4087

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Bilayer graphene based surface passivation enhanced nano structured self-powered near-infrared photodetector

Abstract

ASJC Scopus subject areas

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