Control of Electronic Properties of One-Dimensionally Self-Aligned Si-Ge based Quantum Dots and Its Electroluminescence
一维自对准Si-Ge基量子点的电子性质控制及其电致发光
基本信息
- 批准号:21246053
- 负责人:
- 金额:$ 15.72万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (A)
- 财政年份:2009
- 资助国家:日本
- 起止时间:2009 至 2011
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Self-aligned Si-based quantum dots(Si-QDs) have been successfully fabricated on ultrathin SiO_2 by controlling low-pressure chemical vapor deposition(LPCVD) using pure SiH_4 and/or Si_2H_6, selective Ge LPCVD from 5% GeH_4 diluted with He, thermal oxidation of the dots and subsequent thermal desorption of Ge oxide. In semitransparent Au-gate diodes with self-aligned dots so-prepared, when carriers were injected to the self-aligned Si-QDs from the n-Si(100) substrate for electrons and from the Au top electrode for holes, electroluminescence(EL) in the near-infrared region at room temperature becomes observable with an increase in current at positive biases over a threshold voltage as low as~ 1. 2 V at the Au top electrode. Note that, in the case of an areal dot density of ~10^<13> cm^<-2>, the EL threshold voltage was reduced down to~ 60% of that of ~10^<11> cm^<-2> and emission intensity was enhanced markedly by a factor of ~425 in comparison with the case of ~10^<11> cm^<-2> under the same current density. This is clear evidence of not only an increase in radiative recombination rate in the self-aligned structure but also an improvement of recombination efficiency due to a decrease in current leakage with increasing dot density.
通过使用纯SiH_4和/或Si_2H_6控制低压化学气相沉积(LPCVD)、用He稀释的5%GeH_4进行选择性Ge LPCVD、点的热氧化以及随后Ge氧化物的热解吸,在超薄SiO_2上成功制备了自对准硅基量子点(Si-QDs)。在如此制备的具有自对准点的半透明金栅二极管中,当载流子从 n-Si(100) 衬底注入电子并从 Au 顶部电极注入空穴时,室温下近红外区域的电致发光 (EL) 变得可观察到,并且在阈值电压低至 1. 2 的正偏压下电流增加。 V 位于 Au 顶部电极。注意,在面积点密度为~10^<13>cm^<-2>的情况下,与相同电流密度下~10^<11>cm^<-2>的情况相比,EL阈值电压降低至~10^<11>cm^<-2>的~60%,并且发射强度显着增强~425倍。这清楚地证明,不仅自对准结构中的辐射复合率增加,而且由于电流泄漏随着点密度的增加而减少,复合效率也得到提高。
项目成果
期刊论文数量(140)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Collective Tunneling Model between Two-Dimensional Electron Gas to Si-Nano Dot
二维电子气与硅纳米点的集体隧道模型
- DOI:
- 发表时间:2011
- 期刊:
- 影响因子:0
- 作者:M.Muraguchi;Y.Sakurai;Y.Takada;S.Nomura;K.Shiraishi;K.Makihara;M.Ikeda;S.Miyazaki;Y.Shigets;T.Endoh
- 通讯作者:T.Endoh
高密度自己整合集積したSi系量子ドットのエレクトロルミネッセンス
高密度自对准集成硅基量子点的电致发光
- DOI:
- 发表时间:2011
- 期刊:
- 影响因子:0
- 作者:寺本慶之;小野亮;小田哲治;牧原克典
- 通讯作者:牧原克典
XPS Study of Interfacial Reaction between Metal and Ge Oxide
金属与Ge氧化物界面反应的XPS研究
- DOI:
- 发表时间:2011
- 期刊:
- 影响因子:0
- 作者:李俊錫;古阪秀三;A.Ohta
- 通讯作者:A.Ohta
プラズマジェット急速熱処理による高密度Ptナノドット形成とフローティングゲートメモリ応用
等离子喷射快速热处理形成高密度Pt纳米点及浮栅存储器应用
- DOI:
- 发表时间:2011
- 期刊:
- 影响因子:0
- 作者:Takumi Uezono;Tomoyuki Takahashi;Michihiro Shintani;Kazumi Hatayama;Kazuya Masu;Hiroyuki Ochi;Takashi Sato;Tingyu An and Tsunemi Watanabe;牧原克典,池田弥央,山根雅人,東清一郎,宮崎誠一
- 通讯作者:牧原克典,池田弥央,山根雅人,東清一郎,宮崎誠一
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MIYAZAKI Seiichi其他文献
Characterization of Electron Field Emission from Multiple-Stacking Si-Based Quantum Dots
多层堆叠硅基量子点电子场发射的表征
- DOI:
10.1587/transele.2018fup0007 - 发表时间:
2019 - 期刊:
- 影响因子:0.5
- 作者:
FUTAMURA Yuto;MAKIHARA Katsunori;OHTA Akio;IKEDA Mitsuhisa;MIYAZAKI Seiichi - 通讯作者:
MIYAZAKI Seiichi
Impact of substrate heating during Al deposition and post annealing on surface morphology, Al crystallinity, and Ge segregation in Al/Ge(111) structure
Al沉积和后退火过程中基底加热对Al/Ge(111)结构中表面形貌、Al结晶度和Ge偏析的影响
- DOI:
10.35848/1347-4065/ac5fbc - 发表时间:
2022 - 期刊:
- 影响因子:1.5
- 作者:
Matsushita Keigo;OHTA Akio;Taoka Noriyuki;Hayashi Shohei;MAKIHARA Katsunori;MIYAZAKI Seiichi - 通讯作者:
MIYAZAKI Seiichi
MIYAZAKI Seiichi的其他文献
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{{ truncateString('MIYAZAKI Seiichi', 18)}}的其他基金
Integration of silicon-based nano-scalestructure and its functional memory device application
硅基纳米结构集成及其功能存储器件应用
- 批准号:
18063017 - 财政年份:2006
- 资助金额:
$ 15.72万 - 项目类别:
Grant-in-Aid for Scientific Research on Priority Areas
The fabrication of super atom structure using Si based self-assembled quantum dots and its electron state control
硅基自组装量子点超原子结构的制备及其电子态控制
- 批准号:
15206035 - 财政年份:2003
- 资助金额:
$ 15.72万 - 项目类别:
Grant-in-Aid for Scientific Research (A)
Control of Silicon quantum structures and its application to room-temperature device operation
硅量子结构的控制及其在室温器件运行中的应用
- 批准号:
10305026 - 财政年份:1998
- 资助金额:
$ 15.72万 - 项目类别:
Grant-in-Aid for Scientific Research (A).
Determination of Energy Distribution of Defect State Density for Ultrathin SiO_2/Si Interfaces by Using Photoelectron Yield Spectroscopy
光电子能谱测定超薄SiO_2/Si界面缺陷态密度能量分布
- 批准号:
08455147 - 财政年份:1996
- 资助金额:
$ 15.72万 - 项目类别:
Grant-in-Aid for Scientific Research (B)