The structure and opto–thermo electronic properties of a new (Bi(Bi2S3)9I3)2/3 hexagonal nano-/micro-rod

Ching-Hwa Ho; Ya-Han Chen; Yung-Kang Kuo; C. W. Liu

doi:10.1039/C7CC00627F

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The structure and opto–thermo electronic properties of a new (Bi(Bi₂S₃)₉I₃)_2/3 hexagonal nano-/micro-rod†

Ching-Hwa Ho,

*^a Ya-Han Chen,^a Yung-Kang Kuo^b and C. W. Liu

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* Corresponding authors

^a Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 106, Taiwan
E-mail: chho@mail.ntust.edu.tw
Fax: +886 2 27303733
Tel: +886 2 27303772

^b Department of Physics, National Dong Hwa University, Shoufeng, Hualien 974, Taiwan

^c Department of Chemistry, National Dong Hwa University, Shoufeng, Hualien 974, Taiwan

Abstract

The semiconductor optoelectronic properties of an inorganic (Bi(Bi₂S₃)₉I₃)_2/3 hexagonal nano-/micro-rod are firstly explored herein. Transmittance and thermoreflectance measurements show that (Bi(Bi₂S₃)₉I₃)_2/3 hexagonal rods possess an indirect gap of 0.73 eV and a direct gap of 1.08 eV, respectively. Hot-probe measurements of (Bi(Bi₂S₃)₉I₃)_2/3 reveal the p-type semiconductor behavior and high thermoelectric voltage. Polarized Raman measurements of the m-plane (Bi(Bi₂S₃)₉I₃)_2/3 (along c and perpendicular to the c axis) identify the structural anisotropy of the hexagonal nano-/micro-rod.

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Article information

DOI: https://doi.org/10.1039/C7CC00627F
Article type: Communication
Submitted: 23 Jan 2017
Accepted: 06 Mar 2017
First published: 08 Mar 2017

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Chem. Commun., 2017,53, 3741-3744

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The structure and opto–thermo electronic properties of a new (Bi(Bi₂S₃)₉I₃)_2/3 hexagonal nano-/micro-rod

C. Ho, Y. Chen, Y. Kuo and C. W. Liu, Chem. Commun., 2017, 53, 3741 DOI: 10.1039/C7CC00627F

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Chemical Communications