Photoresponse of wafer-scale palladium diselenide films prepared by selenization method

Chun Hin Mak; Shenghuang Lin; Lukas Rogée; Shu Ping Lau

doi:10.1088/1361-6463/ab57a8

Photoresponse of wafer-scale palladium diselenide films prepared by selenization method

Chun Hin Mak, Shenghuang Lin, Lukas Rogée, Shu Ping Lau

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

15 Citations (Scopus)

Abstract

Palladium diselenide (PdSe₂) films exhibit a high charge carrier mobility and sensitivity in photodetection. In this work, wafer-scale PdSe₂ thin films with controllable thickness have been synthesized by the selenization of Pd films. A PdSe₂-based photodetector can detect a broad wavelength ranging from 420 nm to 1200 nm. The responsivity and detectivity can reach 1.96 × 10³ A W^-1 and 1.72 × 10¹⁰ W Hz^-1/2 at V _SD = 3 V, respectively. The figure of merit of the photodetection are comparable to the mechanically exfoliated PdSe₂ based photodetector. This work demonstrated that selenization is a facile method to synthesize PdSe₂ films in large scale and the films are promising for broadband photodetection.

Original language	English
Article number	065102
Journal	Journal of Physics D: Applied Physics
Volume	53
Issue number	6
DOIs	https://doi.org/10.1088/1361-6463/ab57a8
Publication status	Published - 6 Feb 2020

Keywords

2D layered material
field effect transistors
palladium diselenide
photodetection

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Acoustics and Ultrasonics
Surfaces, Coatings and Films

More information

10.1088/1361-6463/ab57a8

http://hdl.handle.net/10397/100243

Cite this

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title = "Photoresponse of wafer-scale palladium diselenide films prepared by selenization method",

abstract = "Palladium diselenide (PdSe2) films exhibit a high charge carrier mobility and sensitivity in photodetection. In this work, wafer-scale PdSe2 thin films with controllable thickness have been synthesized by the selenization of Pd films. A PdSe2-based photodetector can detect a broad wavelength ranging from 420 nm to 1200 nm. The responsivity and detectivity can reach 1.96 × 103 A W-1 and 1.72 × 1010 W Hz-1/2 at V SD = 3 V, respectively. The figure of merit of the photodetection are comparable to the mechanically exfoliated PdSe2 based photodetector. This work demonstrated that selenization is a facile method to synthesize PdSe2 films in large scale and the films are promising for broadband photodetection.",

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AU - Mak, Chun Hin

AU - Lin, Shenghuang

AU - Rogée, Lukas

AU - Lau, Shu Ping

PY - 2020/2/6

Y1 - 2020/2/6

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AB - Palladium diselenide (PdSe2) films exhibit a high charge carrier mobility and sensitivity in photodetection. In this work, wafer-scale PdSe2 thin films with controllable thickness have been synthesized by the selenization of Pd films. A PdSe2-based photodetector can detect a broad wavelength ranging from 420 nm to 1200 nm. The responsivity and detectivity can reach 1.96 × 103 A W-1 and 1.72 × 1010 W Hz-1/2 at V SD = 3 V, respectively. The figure of merit of the photodetection are comparable to the mechanically exfoliated PdSe2 based photodetector. This work demonstrated that selenization is a facile method to synthesize PdSe2 films in large scale and the films are promising for broadband photodetection.

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Photoresponse of wafer-scale palladium diselenide films prepared by selenization method

Abstract

Keywords

ASJC Scopus subject areas

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