Details

Autor(en) / Beteiligte

• 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

Titel

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

Ist Teil von

• ACS applied materials & interfaces, 2018-10, Vol.10 (41), p.35477-35486

Ort / Verlag

United States: American Chemical Society

Erscheinungsjahr

2018

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• 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.