High optical response of niobium-doped WSe2-layered crystals

Hung Pin Hsu, Der Yuh Lin, Jhin Jhong Jheng, Pin Cheng Lin, Tsung Shine Ko

Research output: Contribution to journalArticle

Abstract

The optical properties of WSe2-layered crystals doped with 0.5% niobium (Nb) grown by the chemical vapor transport method were characterized by piezoreflectance (PzR), photoconductivity (PC) spectroscopy, frequency-dependent photocurrent, and time-resolved photoresponse. With the incorporation of 0.5% Nb, the WSe2 crystal showed slight blue shifts in the near band edge excitonic transitions and exhibited strongly enhanced photoresponsivity. Frequency-dependent photocurrent and time-resolved photoresponse were measured to explore the kinetic decay processes of carriers. Our results show the potential application of layered crystals for photodetection devices based on Nb-doped WSe2-layered crystals.

Original languageEnglish
Article number1161
JournalMaterials
Volume12
Issue number7
DOIs
Publication statusPublished - 2019 Jan 1

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Niobium
Crystals
Photocurrents
Photoconductivity
Optical properties
Vapors
Spectroscopy
Kinetics

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

Cite this

Hsu, Hung Pin ; Lin, Der Yuh ; Jheng, Jhin Jhong ; Lin, Pin Cheng ; Ko, Tsung Shine. / High optical response of niobium-doped WSe2-layered crystals. In: Materials. 2019 ; Vol. 12, No. 7.
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High optical response of niobium-doped WSe2-layered crystals. / Hsu, Hung Pin; Lin, Der Yuh; Jheng, Jhin Jhong; Lin, Pin Cheng; Ko, Tsung Shine.

In: Materials, Vol. 12, No. 7, 1161, 01.01.2019.

Research output: Contribution to journalArticle

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AU - Lin, Der Yuh

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