Direct measurement of coherent phonon dynamics in solution-processed stibnite thin films
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...
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sg-ntu-dr.10356-1048982021-01-08T05:50:26Z Direct measurement of coherent phonon dynamics in solution-processed stibnite thin films Mathews, Nripan Gan, Chee Kwan Chong, Wee Kiang Xing, Guichuan Liu, Yun Gui, Ee Ling Zhang, Qing Xiong, Qihua Sum, Tze Chien School of Electrical and Electronic Engineering School of Materials Science & Engineering School of Physical and Mathematical Sciences Energy Research Institute @ NTU (ERI@N) Research Techno Plaza DRNTU::Science::Physics 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 coherent B3g longitudinal optical phonon mode with a frequency of 63.74 ± 0.05 cm−1 (or 1.911 ± 0.002 THz) at room temperature is generated via the impulsive stimulated-Raman-scattering mechanism. These strong electron-phonon interactions indicate a dominant energy-loss channel in these materials that could impose a fundamental limit on their solar energy conversion efficiency. Published version 2014-08-25T02:52:23Z 2019-12-06T21:42:14Z 2014-08-25T02:52:23Z 2019-12-06T21:42:14Z 2014 2014 Journal Article Chong, W. K., Xing, G., Liu, Y., Gui, E. L., Zhang, Q., Xiong, Q., et al. (2014). Direct measurement of coherent phonon dynamics in solution-processed stibnite thin films. Physical Review B, 90(3), 035208-. 1098-0121 https://hdl.handle.net/10356/104898 http://hdl.handle.net/10220/20395 10.1103/PhysRevB.90.035208 en Physical review B © 2014 American Physical Society. This paper was published in Physical Review B and is made available as an electronic reprint (preprint) with permission of American Physical Society. The paper can be found at the following official DOI: http://dx.doi.org/10.1103/PhysRevB.90.035208. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. application/pdf |
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DRNTU::Science::Physics Mathews, Nripan Gan, Chee Kwan Chong, Wee Kiang Xing, Guichuan Liu, Yun Gui, Ee Ling Zhang, Qing Xiong, Qihua Sum, Tze Chien Direct measurement of coherent phonon dynamics in solution-processed stibnite thin films |
| description |
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 coherent B3g longitudinal optical phonon mode with a frequency of 63.74 ± 0.05 cm−1 (or 1.911 ± 0.002 THz) at room temperature is generated via the impulsive stimulated-Raman-scattering mechanism. These strong electron-phonon interactions indicate a dominant energy-loss channel in these materials that could impose a fundamental limit on their solar energy conversion efficiency. |
| author2 |
School of Electrical and Electronic Engineering |
| author_facet |
School of Electrical and Electronic Engineering Mathews, Nripan Gan, Chee Kwan Chong, Wee Kiang Xing, Guichuan Liu, Yun Gui, Ee Ling Zhang, Qing Xiong, Qihua Sum, Tze Chien |
| format |
Article |
| author |
Mathews, Nripan Gan, Chee Kwan Chong, Wee Kiang Xing, Guichuan Liu, Yun Gui, Ee Ling Zhang, Qing Xiong, Qihua Sum, Tze Chien |
| author_sort |
Mathews, Nripan |
| title |
Direct measurement of coherent phonon dynamics in solution-processed stibnite thin films |
| title_short |
Direct measurement of coherent phonon dynamics in solution-processed stibnite thin films |
| title_full |
Direct measurement of coherent phonon dynamics in solution-processed stibnite thin films |
| title_fullStr |
Direct measurement of coherent phonon dynamics in solution-processed stibnite thin films |
| title_full_unstemmed |
Direct measurement of coherent phonon dynamics in solution-processed stibnite thin films |
| title_sort |
direct measurement of coherent phonon dynamics in solution-processed stibnite thin films |
| publishDate |
2014 |
| url |
https://hdl.handle.net/10356/104898 http://hdl.handle.net/10220/20395 |
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1688665674299211776 |