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5.0154927.pdf | 1.92 MB | Adobe PDF | 見る/開く |
タイトル: | Picosecond trion photocurrent dynamics in FAPbI₃ quantum dot films |
著者: | Kobiyama, Etsuki Tahara, Hirokazu https://orcid.org/0000-0002-0738-5623 (unconfirmed) Saruyama, Masaki https://orcid.org/0000-0001-8723-910X (unconfirmed) Sato, Ryota https://orcid.org/0000-0002-7353-6880 (unconfirmed) Teranishi, Toshiharu https://orcid.org/0000-0002-5818-8865 (unconfirmed) Kanemitsu, Yoshihiko https://orcid.org/0000-0002-0788-131X (unconfirmed) |
著者名の別形: | 媚山, 悦企 田原, 弘量 猿山, 雅亮 佐藤, 良太 寺西, 利治 金光, 義彦 |
キーワード: | Excitons Photoconductivity Quantum dots Transient-absorption spectroscopy Perovskites Nanocrystals Optoelectronic devices Photodetectors |
発行日: | 19-Jun-2023 |
出版者: | AIP Publishing |
誌名: | Applied Physics Letters |
巻: | 122 |
号: | 25 |
論文番号: | 252106 |
抄録: | Nanocrystal quantum dot (QD) films have been highlighted as unique building blocks of optoelectronic devices due to their unique properties based on electronic interactions among close-packed QDs. Although the creation and annihilation processes of trions play important roles in optical responses of isolated QDs, their contributions to photocurrent conversion processes in QD films are unclear. Here, we studied trion dynamics in QD films by transient photocurrent measurements. We observed that the transient photocurrent signal has two decay components: a fast trion component with a lifetime shorter than 1 ns and a slow exciton component with several tens of nanoseconds. Moreover, we control the signal amplitude of the fast trion decay component by tuning extra charge doping to QDs. These results demonstrate the control of optoelectronic responses of QD films via bias electric voltage and will pave the way for QD-based ultrafast optoelectronics. |
著作権等: | This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in (Etsuki Kobiyama, Hirokazu Tahara, Masaki Saruyama, Ryota Sato, Toshiharu Teranishi, Yoshihiko Kanemitsu; Picosecond trion photocurrent dynamics in FAPbI3 quantum dot films. Appl. Phys. Lett. 19 June 2023; 122 (25): 252106.) and may be found at https://doi.org/10.1063/5.0154927. The full-text file will be made open to the public on JUNE 20 2024 in accordance with publisher's 'Terms and Conditions for Self-Archiving'. |
URI: | http://hdl.handle.net/2433/285534 |
DOI(出版社版): | 10.1063/5.0154927 |
出現コレクション: | 学術雑誌掲載論文等 |
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