Analysis and control of the ultra fast phenomena in nano-scaleand its application to the development of new functional materials and devices.

纳米尺度超快现象的分析与控制及其在新型功能材料和器件开发中的应用。

• 批准号: 14102011
• 负责人: SHIGEKAWA Hidemi
• 金额: $ 91.1万
• 依托单位: University of Tsukuba
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (S)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-14102011/
• 关键词: STM; nanotechnology; laser-combined STM; fast phenomena; carrier dynamics; 走査トンネル顕微鏡; 超短パルスレーザー; 超高速現象; ナノテクノロジー; フェムト秒; ポンププローブ法; フェムト秒時間分解; 新奇機能素子; 走査プローブ顕微鏡; トンネル効果; ナノサイエンス; 新機能素子; 超短パルス光; 分子エレクトロニクス; ナノ構造; 分子レクトロニクス

Using the wavelength-tunable laser which we bought in 2005, time-dependence of the tunneling current was analyzed by comparing the results with the carrier dynamics observed using the conventional optical pump-probe technique. Thereby, we have confirmed that we can probe the local photocarrier dynamics using our laser-combined STM. With the introduction of a new idea, we have succeeded in developing the new system which enables us to observe the carrier dynamics from sub-picosecond to microsecond range in 1/100 to 1/10000 data acquisition time of the first generation system.

利用我们在2005年购买的波长可调谐激光器，通过与使用传统的光泵浦探测技术观察到的载流子动力学的结果进行比较，分析了隧穿电流的时间依赖性。因此，我们已经确认我们可以使用我们的激光组合STM来探测局部光生载流子动力学。随着一个新的想法的引入，我们已经成功地开发了新的系统，使我们能够观察从亚皮秒到微秒范围内的载波动态在1/100至1/10000的第一代系统的数据采集时间。

项目成果

Fabrication of multi-layer self-assembled InAs quantum dots for high-efficiency solar cells

用于高效太阳能电池的多层自组装InAs量子点的制备

• 发表时间: 2006
• 期刊: Proceedings of 4th 2006.IEEE 4th World conference on Photovoltaic Energy Conversion
• 作者: Ryuji Oshima;Hiroyuki Komiyama;Takayuki Hashimoto;Hidemi Shigekiawa;Yoshitake Okada
• 通讯作者: Yoshitake Okada

Strain compensation effect on stacked InAs self-assembled quantum dots embedded in GaNAs layers

嵌入 GaNs 层中堆叠 InAs 自组装量子点的应变补偿效应

• 期刊: Proceedings of Materials Research Society (MRS), 2005 fall (印刷中)
• 作者: Ryuji Oshima;Takayuki Hashimoto;Hidemi Shigekawa;Yoshitaka Okada
• 通讯作者: Yoshitaka Okada

Fabrication of self-organized GaInNAs quantum dots on GaAs (311)B by atomic hydrogen-assisted RF-molecular beam epitaxy

原子氢辅助射频分子束外延在 GaAs (311)B 上制备自组织 GaInNAs 量子点

• 期刊: Proceedings of International symposium on compound semiconductors 2004 (印刷中)
• 作者: Ryuji Oshima;Kazuki Uehara;Hidemi Shigekawa;Yoshitaka Okada
• 通讯作者: Yoshitaka Okada

Tip-induced band bending and its effect on local barrier height measurement studied by light modulated scanning tunneling spectroscopy

光调制扫描隧道光谱研究尖端引起的能带弯曲及其对局部势垒高度测量的影响

• 发表时间: 2006
• 期刊: surf.sci.& technol(e-journal) Vol.4
• 作者: S.Yoshida

Nanoscale dynamics probed by laser-combined scanning tunneling microscopy

• DOI: 10.1016/j.tsf.2007.04.109
• 发表时间: 2008-03
• 期刊: Thin Solid Films
• 影响因子: 2.1
• 作者: H. Shigekawa;S. Yoshida;O. Takeuchi;Masahiro Aoyama;Y. Terada;Hiroyuki Kondo;H. Oigawa