ダウンロード数: 365
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 | |
---|---|---|---|---|
ncomms1598.pdf | 484.04 kB | Adobe PDF | 見る/開く |
タイトル: | Extraordinary carrier multiplication gated by a picosecond electric field pulse. |
著者: | Hirori, H https://orcid.org/0000-0001-6056-8675 (unconfirmed) Shinokita, K https://orcid.org/0000-0002-7752-3251 (unconfirmed) Shirai, M Tani, S Kadoya, Y Tanaka, K https://orcid.org/0000-0002-2132-8318 (unconfirmed) |
著者名の別形: | 廣理, 英基 |
キーワード: | Physical sciences Applied physics Materials science Nanotechnology |
発行日: | Dec-2011 |
出版者: | Nature Publishing Group |
誌名: | Nature communications |
巻: | 2 |
論文番号: | 594 |
抄録: | The study of carrier multiplication has become an essential part of many-body physics and materials science as this multiplication directly affects nonlinear transport phenomena, and has a key role in designing efficient solar cells and electroluminescent emitters and highly sensitive photon detectors. Here we show that a 1-MVcm(-1) electric field of a terahertz pulse, unlike a DC bias, can generate a substantial number of electron-hole pairs, forming excitons that emit near-infrared luminescence. The bright luminescence associated with carrier multiplication suggests that carriers coherently driven by a strong electric field can efficiently gain enough kinetic energy to induce a series of impact ionizations that can increase the number of carriers by about three orders of magnitude on the picosecond time scale. |
著作権等: | © 2011 Nature Publishing Group, a division of Macmillan Publishers Limited. This work is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/ |
URI: | http://hdl.handle.net/2433/157960 |
DOI(出版社版): | 10.1038/ncomms1598 |
PubMed ID: | 22186890 |
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。