应变Si1—xGex层材料和Si／Si1—xGex器件物理参数模型

Ｓｉ／Ｓｉ１－ｘＧｅｘ异质结系统已成功地应用于高速数字、高频微波和光电器件中。对这些器件进行理解和分析时，往往受到应变Ｓｉ１－ｘＧｅｘ材料参数缺乏的制约。本文建立和给出了常温和低温下重要应变Ｓｉ１－ｘＧｅｘ层材料和Ｓｉ／Ｓｉ１－ｘＧｅｘ器件物理参数模型，对Ｓｉ／Ｓｉ１－ｘＧｅｘ异质结器件的理解、研究和设计有重要的实际意义。     

Si／Si1—xGex异质结器件

本文综述了国外Si/Si_(1-x)Ge_xHBT的发展状况,把出Si_(1-x)Ge_xHBT的特点和优越性,分析了Si_(1-x)Ge_xHBT的制造技术和设备要求,指出了Si/Si_(1-x)Gex器件的应用前景。     

Si1—xGex合金半导体及其应用

Ｓｉ１－ｘＧｅｘ合金及其与Ｓｉ构成的应变层异质结构，量子阱、超晶格是近年来迅速发展起来的一种具有广阔应用前景的半导体微结构材料，本文着重综述了Ｓｉ１－ｘＧｅｘ合金的结构，电学，光学性质及其广阔和应用价值。     

Si／Si1—xGex／Si异质结双极晶体管中基区杂质外扩散与未掺杂Si1—xGex结隔离层

研究了Si/Si1-xGex/Si n-p-n异质结双极晶体管（HBT）的结界面处基区杂质外扩散与标定的未掺杂Si1-xGex隔离层的影响，发现，来自重掺杂基区或非突变界面处少量硼的外扩散会在导带中形成寄生势垒，它严重地影响了HBT中集电极电流的提高，未掺杂界面隔离层能消防这些寄生势垒从而极大地提高了集电极电流。     

Si1—xGex／Si Y—分支波长信号分离器

利用Ｓｉ１－ｘ的等离子体色散效应，对１．３μｍ和１．５５μｍ光通信波长的Ｓｉ基Ｓｉ１－ｘＧｅｘ波长信号分离器进行了理论分析，设计了结构参数和电学参数，并分析了其分支特性。     

Photoluminescence Properties of Si1—xGex／Si Strained Layer Structures

The investigation on optical properties of Si1-xGex/Si strained layer structures has been carried out actively in recent years.The photoluminescence has be-come a brisker subject in the studies of its various optical properties.A research develop-ment to photoluminescence properties of some new Si1-xGex/Si strained layer struc-tures is introduced.     

Si1—xGex合金的浅杂质光电导谱

在４．２－５０Ｋ温度范围内研究了直拉法生长的富含Ｓｉ的Ｓｉ１－ｘ－Ｇｅｘ合金的浅杂质光电导谱，首次观察到了锗硅合金中从硼受主杂质基态到ｐ３／２价带的光电离跃迁过程及硼受主杂质的自旋－轨道分裂带相联系折光电导过程，并由此确定了硼杂质的电离能。     

Gas source molecular beam epitaxy grown strained-Si films on step-graded relaxed Si1−xGex for MOS applications

Gas source molecular beam epitaxy has been employed for the growth of a high quality strained-Si layer on a completely relaxed step-graded Si_1−xGe_x buffer layer. As-grown strained-Si layers have been characterized using secondary ion mass spectroscopy, Rutherford backscattering spectroscopy, atomic force microscopy, and spectroscopic ellipsometry for the determination of composition, thickness, crystalline quality, and surface roughness. Heterojunction conduction and valence band offsets (ΔE_c, ΔE_υ) of strained-Si/SiGe heterostructure have been determined from measured threshold voltages of a strained-Si channel p-metal oxide semiconductor field effect transistor (MOSFET) fabricated using grown films. MOS capacitance-voltage profiling has been employed for the extraction of strained-Si layer thickness and apparent doping profile in the device.     

开创了第二代硅新技术的Si／Si1—xGex异质器件

综述了国内外Ｓｉ／ＳｉＧｅ异质器件的发展状况，指出了Ｓｉ／ＳｉＧｅ异质器件的特点和优越性，分析了该器件的结构机理和制造技术，阐述了该器件的应用前景和对微电子技术将产生的重大影响，并提出了发展我国Ｓｉ／ＳｉＧｅ异质器件的建议。     

As＋注入Si1—xGex的快速退火行为

用二次离子质谱对Ａｓ＋注入Ｓｉ１－ｘＧｅｘ的快速退火行为进行了研究，Ｓｉ１－ｘＧｅｘ样品中Ｇｅ组分分别为ｘ＝０．０９，０．２７和０．４３，Ａｓ注入剂量为２×１０＾１６ｃｍ＾－２，注放能量为１００ｋｅＶ，快速退火温度分别为９５０℃和１０５０℃，时间均为１８秒，实验结果表明，Ｓｉ２－ｘＧｅｘ样品，Ａｓ浓度分布呈组分密切相关，Ｇｅ组分越大，Ａｓ扩散越快，对于Ｇｅ组分较大的Ｓｉ１－ｘＧｅｘ样吕，Ａｓdispla     

Characterization of a Quantum Well in an Si/Si1–xGex/Si Heterostructure by X-ray Diffractometry

Rocking curves with a pronounced pendulum-solution pattern are obtained for Si_{1 – x} Ge _x /Si specimens with a single quantum well (QW) by double-crystal x-ray diffractometry. These oscillations are typical of the rocking curves for GaAs multilayers with QWs. With Si–Ge multilayers, they are obtained for the first time. The Ge depth profiles of the QW are reconstructed from the rocking curves. As a result, the thicknesses of both QW interfacial layers are estimated.