ダウンロード数: 324
このアイテムのファイル:
ファイル | 記述 | サイズ | フォーマット | |
---|---|---|---|---|
PhysRevB.92.115204.pdf | 415.95 kB | Adobe PDF | 見る/開く |
タイトル: | Free-carrier dynamics and band tails in Cu[2] ZnSn (S[x]Se[1−x] )[4] : Evaluation of factors determining solar cell efficiency |
著者: | Phuong, Le Quang Okano, Makoto Yamashita, Genki Nagai, Masaya Ashida, Masaaki Nagaoka, Akira Yoshino, Kenji Kanemitsu, Yoshihiko https://orcid.org/0000-0002-0788-131X (unconfirmed) |
著者名の別形: | American Physical Society 金光, 義彦 |
発行日: | 9-Sep-2015 |
出版者: | American Physical Society |
誌名: | Physical Review B |
巻: | 92 |
号: | 11 |
論文番号: | 115204 |
抄録: | We investigated the composition-dependent photocarrier dynamics in Cu[2] ZnSn(S[x]Se[1−x])[4] (CZTSSe) single crystals using various types of steady-state and time-resolved optical spectroscopy. Photoluminescence spectroscopy shows that the band-tail states formed below the band edge decrease monotonically with increasing Se content. THz time-resolved spectroscopy clarifies that an increase in the Se content leads to a shorter lifetime of the free photocarriers. A trade-off between the composition-dependent band-tail density and the free-carrier lifetime occurs in CZTSSe single crystals. Our experimental results provide insights into the physics behind the low and composition-dependent conversion efficiency of CZTSSe-based solar cells. |
著作権等: | ©2015 American Physical Society |
URI: | http://hdl.handle.net/2433/202560 |
DOI(出版社版): | 10.1103/PhysRevB.92.115204 |
出現コレクション: | 学術雑誌掲載論文等 |
このリポジトリに保管されているアイテムはすべて著作権により保護されています。