Phonons in Bi2S3 nanostructures: Raman scattering and first-principles studies

Yanyuan Zhao,1 Kun Ting Eddie Chua,2 Chee Kwan Gan,2 Jun Zhang,1 Bo Peng,1 Zeping Peng,3 and Qihua Xiong1,4,* 1Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371 2Institute of High Performance Computing, 1 Fusionopolis Way, #16-16 Connexis, Singapore 138632 3School of Physical Science and Technology, MOE Key Laboratory on Luminescence and Real-Time Analysis, Southwest University, Chongqing 400715, China 4Division of Microelectronics, School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798 (Received 1 July 2011; revised manuscript received 30 October 2011; published 21 November 2011)