Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/27495
Title: Bilayer graphene based surface passivation enhanced nano structured self-powered near-infrared photodetector
Authors: Zeng, L
Xie, C
Tao, L
Long, H
Tang, C
Tsang, YH 
Jie, J
Issue Date: 2015
Publisher: Optical Society of America
Source: Optics express, 2015, v. 23, no. 4, p. 4839-4846 How to cite?
Journal: Optics express 
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/Idark ratio 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-1 and 6.03 × 1013 cmHz1/2W-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.
URI: http://hdl.handle.net/10397/27495
EISSN: 1094-4087
DOI: 10.1364/OE.23.004839
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