Research on energy transfer via nanocrystals and their new functionality as optical materials

通过纳米晶体进行能量传输及其作为光学材料的新功能的研究

• 批准号: 16201022
• 负责人: HAYASHI Shinji
• 金额: $ 25.79万
• 依托单位: Kobe University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 2004
• 资助国家: 日本
• 起止时间: 2004 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-16201022/
• 关键词: energy transfer; nanocrystals; plasmon

In this work, a new function of nanocrystals as "energy donor" or "energy transmitter" in an energy transfer process is studied. Followings are the list of results obtained in this work. 1. The mechanism of energy transfer from Si nanocrystals to Er ions is studied and the existence of two different energy transfer processes is revealed. 2. The evidence of the interaction between impurities (P and/or B atoms) in Si nanocrystals and Er ions is shown and efficient deexcitation of Er ions by Auger type energy transfer to impurities in Si nanocrystals is clarified. 3. The rate of energy transfer from Si nanocrystals to Er ions is shown to be modified by placing a metal thin film nearby. The results strongly suggest that the energy transfer efficiency can be enhanced by using a metal layer. 4. The enhancement of PL from Er in glasses by simultaneoulsy doping gold nanocrystals is demonstrated and the contribution of surface plasmon polaritons of Au nanocrystals for the enhancement is clarified. 5. Excitation of surface plasmon polaritons of a gold thin film by energy transfer from Si nanocrystals is demonstrated by placing a gold thin film and organic grating near Si nanocrystals.

在这项工作中，一个新的功能的纳米晶体作为“能量供体”或“能量传输器”的能量传递过程中进行了研究。以下是在这项工作中获得的结果列表。1.研究了硅纳米晶与铒离子之间的能量传递机制，揭示了两种不同的能量传递过程。2. Si纳米晶体中的杂质（P和/或B原子）与Er离子之间的相互作用的证据被示出，并且阐明了Er离子通过俄歇型能量转移到Si纳米晶体中的杂质而有效地去激发。3.从Si纳米晶体的能量转移到Er离子的速率示出被修改通过放置附近的金属薄膜。结果强烈地表明，能量转移效率可以通过使用金属层来增强。4.研究了掺金纳米晶对玻璃中Er发光的增强作用，阐明了Au纳米晶表面等离子激元对增强的贡献。5.通过在硅纳米晶附近放置金薄膜和有机光栅，证明了由硅纳米晶的能量转移激发金薄膜的表面等离子体激元。

项目成果

Interaction between Er ions and shallow impurities in Si nanocrystals

Er 离子与 Si 纳米晶中浅层杂质之间的相互作用

• 发表时间: 2005
• 期刊: Physical Review B 71・11
• 作者: Toshihiro;Nakamura;Kenji Imakita
• 通讯作者: Kenji Imakita

エコマテリアルハンドブック III 2.2.6金属ナノ粒子の光学応答

生态材料手册 III 2.2.6 金属纳米颗粒的光学响应

• 发表时间: 2006
• 作者: C.Kim;Y.J.Kim;Y.A.Kim;T.Yanagisawa;M Endo;M.S.Dresslhaus;林真至(分担執筆)
• 通讯作者: 林真至(分担執筆)

Enhancement and suppression of energy transfer from Si nanocrystals to Er ions through a control of the photonic mode density

通过控制光子模式密度增强和抑制从硅纳米晶体到铒离子的能量转移

• 发表时间: 2006
• 期刊: Physical Review B 74
• 作者: Tsubaki;H.;Kombo M.;八尾 誠;Toshihiro Nakamura
• 通讯作者: Toshihiro Nakamura

Stimulated resonance Raman scattering from dye-doped polymer waveguides

• DOI: 10.1063/1.2203509
• 发表时间: 2006-05
• 期刊: Applied Physics Letters
• 影响因子: 4
• 作者: I. Sakata;Shuhei Fujimoto;H. Yanagi

Low threshold amplified spontaneous emission from near-infrared dye-doped polymer waveguide

近红外染料掺杂聚合物波导的低阈值放大自发发射

• 发表时间: 2006
• 期刊: Applied Physics Letters 88
• 作者: Tomoyuki Kosaka;Taku Uchiyama;Shun-ichi Ishii;Miho Enoki;Hiroyuki Imachi;Akiyoshi Ohashi;Hideki Harada;Hiroshi Ikenaga;Kazuya Watanabe;Kenichi Yamashita
• 通讯作者: Kenichi Yamashita