Environmentally and Mechanically Stable Selenium 1D/2D Hybrid Structures for Broad-Range Photoresponse from Ultraviolet to Infrared Wavelengths

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Author(s)

  • Yu-Ze Chen
  • Yen-Ting You
  • Pin-Jung Chen
  • Teng-Yu Su
  • Ling Lee
  • Yu-Chuan Shih
  • Chia-Wei Chen
  • Ching-Chen Chang
  • Yi-Chung Wang
  • Cheng-You Hong
  • Tzu-Chien Wei
  • Kung-Hwa Wei
  • Chang-Hong Shen
  • Yu-Lun Chueh

Detail(s)

Original languageEnglish
Pages (from-to)35477-35486
Journal / PublicationACS Applied Materials and Interfaces
Volume10
Issue number41
Online published14 Aug 2018
Publication statusPublished - 17 Oct 2018

Abstract

Selenium (Se) is one of the potential candidates as photodetector because of its outstanding properties such as high photoconductivity (∼8 × 104 S cm-1), piezoelectricity, thermoelectricity, and nonlinear optical responses. Solution phase synthesis becomes an efficient way to produce Se, but a contamination issue that could deteriorate the electric characteristic of Se should be taken into account. In this work, a facile, controllable approach of synthesizing Se nanowires (NWs)/films via a plasma-assisted growth process was demonstrated at the low substrate temperature of 100 °C. The detailed formation mechanisms of nanowires arrays to thin films at different plasma powers were investigated. Moreover, indium (In) layer was used to enhance the adhesive strength with 50% improvement on a SiO2/Si substrate by mechanical interlocking and surface alloying between Se and In layers, indicating great tolerance for mechanical stress for future wearable devices applications. Furthermore, the direct growth of Se NWs/films on a poly(ethylene terephthalate) substrate was demonstrated, exhibiting a visible to broad infrared detection ranges from 405 to 1555 nm with a high on/off ratio of ∼700 as well as the fast response time less than 25 ms. In addition, the devices exhibited fascinating stability in the atmosphere over one month.

Research Area(s)

  • adhesion ability, broad-ranged photoresponse, flexible substrate, plasma-assisted selenization process, Se nanowires arrays

Citation Format(s)

Environmentally and Mechanically Stable Selenium 1D/2D Hybrid Structures for Broad-Range Photoresponse from Ultraviolet to Infrared Wavelengths. / Chen, Yu-Ze; You, Yen-Ting; Chen, Pin-Jung; Li, Dapan; Su, Teng-Yu; Lee, Ling; Shih, Yu-Chuan; Chen, Chia-Wei; Chang, Ching-Chen; Wang, Yi-Chung; Hong, Cheng-You; Wei, Tzu-Chien; Ho, Johnny C.; Wei, Kung-Hwa; Shen, Chang-Hong; Chueh, Yu-Lun.

In: ACS Applied Materials and Interfaces, Vol. 10, No. 41, 17.10.2018, p. 35477-35486.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal