Direct measurement of coherent phonon dynamics in solution-processed stibnite thin films

• Main Authors: Mathews, Nripan, Gan, Chee Kwan, Chong, Wee Kiang, Xing, Guichuan, Liu, Yun, Gui, Ee Ling, Zhang, Qing, Xiong, Qihua, Sum, Tze Chien
• Other Authors: School of Electrical and Electronic Engineering
• Format: Article
• Language: English
• Published: 2014
• Subjects: DRNTU::Science::Physics
• Online Access: https://hdl.handle.net/10356/104898; http://hdl.handle.net/10220/20395
• Institution: Nanyang Technological University

We report observations of coherent phonon oscillations in solution-processed polycrystalline stibnite (Sb2S3) photovoltaic thin films using transient absorption spectroscopy. Detailed optical spectroscopy correlated by extensive first-principles lattice dynamics calculations indicates that the coher...