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

Yu Ze Chen, Yen Ting You, Pin Jung Chen, Dapan Li, Teng Yu Su, Ling Lee, Yu Chuan Shih, Chia Wei Chen, Ching Chen Chang, Yi Chung Wang, Cheng You Hong, Tzu Chien Wei, Johnny C. Ho, Kung Hwa Wei, Chang Hong Shen, Yu Lun Chueh

研究成果: Contribution to journalArticle査読

29 被引用数 (Scopus)

抄録

Selenium (Se) is one of the potential candidates as photodetector because of its outstanding properties such as high photoconductivity (∼8 × 10 4 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 SiO 2 /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.

本文言語英語
ページ(範囲)35477-35486
ページ数10
ジャーナルACS Applied Materials and Interfaces
10
41
DOI
出版ステータス出版済み - 10 17 2018
外部発表はい

All Science Journal Classification (ASJC) codes

  • 材料科学(全般)

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