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| ファイル | 記述 | サイズ | フォーマット | |
|---|---|---|---|---|
| 1.5110652.pdf | 1.33 MB | Adobe PDF | 見る/開く |
| タイトル: | Internal quantum efficiency of radiation in a bulk CH3NH3PbBr3 perovskite crystal quantified by using the omnidirectional photoluminescence spectroscopy |
| 著者: | Kojima, K. Ikemura, K. Matsumori, K. Yamada, Y. Kanemitsu, Y. Chichibu, S. F. |
| 著者名の別形: | 小島, 一信 池村, 賢一郎 松森, 航平 山田, 泰裕 金光, 義彦 秩父, 重英 |
| 発行日: | Jul-2019 |
| 出版者: | AIP Publishing |
| 誌名: | APL Materials |
| 巻: | 7 |
| 号: | 7 |
| 論文番号: | 071116 |
| 抄録: | The internal quantum efficiency (IQE) of radiation for bulk CH3NH3PbBr3 crystals was quantified by using omnidirectional photoluminescence spectroscopy. The angle-resolved photoluminescence revealed that the emission with photon energies higher than the absorption-edge shows a Lambertian distribution and that the light extraction efficiency is determined by the escaping cone. The IQE value strongly depends on the photo-excitation density (P), and a CH3NH3PbBr3 crystal fabricated under the methylammonium-rich conditions gave the maximum IQE of 62.5% under P = 28 W/cm2. A further increase in P gave rise to the decrease in IQE due to the Auger effects. |
| 記述: | ペロブスカイト半導体の発光量子効率計測に成功. 京都大学プレスリリース. 2019-08-07. |
| 著作権等: | ©2019 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
| URI: | http://hdl.handle.net/2433/243259 |
| DOI(出版社版): | 10.1063/1.5110652 |
| 関連リンク: | https://www.kyoto-u.ac.jp/ja/research-news/2019-08-07 |
| 出現コレクション: | 学術雑誌掲載論文等 |
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