Ultrafast carrier dynamics in Cu(In,Ga)Se-2 thin films probed by femtosecond pump-probe spectroscopy
| dc.citation.epage | 12675 | en_US |
| dc.citation.issue | 12 | en_US |
| dc.citation.volume | 20 | en_US |
| dc.citation.woscount | 6 | |
| dc.contributor.author | Chen, Shih-Chen | en_US |
| dc.contributor.author | Liao, Yu-Kuang | en_US |
| dc.contributor.author | Chen, Hsueh-Ju | en_US |
| dc.contributor.author | Chen, Chia-Hsiang | en_US |
| dc.contributor.author | Lai, Chih-Huang | en_US |
| dc.contributor.author | Chueh, Yu-Lun | en_US |
| dc.contributor.author | Kuo, Hao-Chung | en_US |
| dc.contributor.author | Wu, Kaung-Hsiung | en_US |
| dc.contributor.author | Juang, Jenh-Yih | en_US |
| dc.contributor.author | Cheng, Shun-Jen | en_US |
| dc.contributor.author | Hsieh, Tung-Po | en_US |
| dc.contributor.author | Kobayashi, Takayoshi | en_US |
| dc.contributor.department | 電子物理學系 | zh_TW |
| dc.contributor.department | 光電工程學系 | zh_TW |
| dc.contributor.department | Department of Electrophysics | en_US |
| dc.contributor.department | Department of Photonics | en_US |
| dc.date.accessioned | 2014-12-08T15:23:35Z | |
| dc.date.available | 2014-12-08T15:23:35Z | |
| dc.date.issued | 2012-06-04 | en_US |
| dc.description.abstract | Ultrafast carrier dynamics in Cu(In,Ga)Se-2 films are investigated using femtosecond pump-probe spectroscopy. Samples prepared by direct sputtering and co-evaporation processes, which exhibited remarkably different crystalline structures and free carrier densities, were found to result in substantially different carrier relaxation and recombination mechanisms. For the sputtered CIGS films, electron-electron scattering and Auger recombination was observed, whereas for the co-evaporated CIGS films, bandgap renormalization accompanied by band filling effect and hot phonon relaxation was observed. The lifetime of defect-related recombination in the co-evaporated CIGS films is much longer than that in the direct-sputtered CIGS films, reflecting a better quality with higher energy conversion efficiency of the former. (c) 2012 Optical Society of America | en_US |
| dc.identifier.issn | 1094-4087 | en_US |
| dc.identifier.journal | OPTICS EXPRESS | en_US |
| dc.identifier.uri | https://ir.lib.nycu.edu.tw/handle/11536/16491 | |
| dc.identifier.wosnumber | WOS:000305463600005 | |
| dc.language.iso | en_US | en_US |
| dc.title | Ultrafast carrier dynamics in Cu(In,Ga)Se-2 thin films probed by femtosecond pump-probe spectroscopy | en_US |
| dc.type | Article | en_US |