High optical response of niobium-doped WSe2-layered crystals

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

研究成果: Article同行評審

1 引文 斯高帕斯(Scopus)

摘要

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.

原文English
文章編號1161
期刊Materials
12
發行號7
DOIs
出版狀態Published - 2019

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

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