The Best Synthesis Route of Selenium Nanowires Determined by Raman Spectroscopy
Rachman Shaf (a), Fainan Failamani (b), Bambang Prijamboedi (b), Agustinus Agung Nugroho (b)

a) Physics Graduate Program, Faculty of Mathematics and Natural Science, Institut Teknologi Bandung, Jl Ganesha 10 Bandung 40132, Indonesia

b) Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Jl Ganesha 10 Bandung 40132, Indonesia

Abstract

The fascinating application of Selenium nanowires as a one-dimensional template of devices such as thermoelectric, piezoelectric, photoconductive, and semiconductor has been continuously developed. The synthesis of Selenium nanowires by facile template-free solution method strongly depends on the pH concentration and its heating condition. To obtain those optimum conditions with less time synthesis process, Raman spectroscopy was utilized to observe the selenium structure in the liquid solution. It is shown that the best synthesis route of Selenium nanowire is characterized by the intensity of trigonal structure at 237cm-1 and 139cm-1 in the solid form, and the disappearance of amorphous and monoclinic structure at ~260cm-1 and ~250cm-1, respectively, in its liquid solution. These spectra are obtained in the Selenium solution with a pH of 9 at 850C for 210 minutes.

Keywords: Nanowires- Selenium nanowires- Raman spectra

Topic: Material Physics