Generalized Scheme for High Performing Photodetectors with a p-Type 2D Channel Layer and n-Type Nanoparticles

Title
Generalized Scheme for High Performing Photodetectors with a p-Type 2D Channel Layer and n-Type Nanoparticles
Authors
송진동김형준Jingyuan Jia전수민전재호Jiao Xu조정호이병훈황의현이성주
Keywords
photodetector; nanoparticle; 2D channel; Black phosphorus; MoS2
Issue Date
2018-03
Publisher
Small
Citation
VOL 14, NO 9-1703065-8
Abstract
A generalized scheme for the fabrication of high performance photodetectors consisting of a p-type channel material and n-type nanoparticles is proposed. The high performance of the proposed hybrid photodetector is achieved through enhanced photoabsorption and the photocurrent gain arising from its effective charge transfer mechanism. In this paper, the realization of this design is presented in a hybrid photodetector consisting of 2D p-type black phosphorus (BP) and n-type molybdenum disulfide nanoparticles (MoS2 NPs), and it is demonstrated that it exhibits enhanced photoresponsivity and detectivity compared to pristine BP photodetectors. It is found that the performance of hybrid photodetector depends on the density of NPs on BP layer and that the response time can be reduced with increasing density of MoS2 NPs. The rising and falling times of this photodetector are smaller than those of BP photodetectors without NPs. This proposed scheme is expected to work equally well for a photodetector with an n-type channel material and p-type nanoparticles.
URI
http://pubs.kist.re.kr/handle/201004/67364
ISSN
1613-6810
Appears in Collections:
KIST Publication > Article
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