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    • 3. 发明申请
    • METHOD FOR FABRICATING INTERFACIAL OXIDE IN A TRANSISTOR AND RELATED STRUCTURE
    • 在晶体管和相关结构中制备界面氧化物的方法
    • WO0241361A3
    • 2003-04-03
    • PCT/US0143219
    • 2001-11-19
    • CONEXANT SYSTEMS INC
    • JOSHI PANKAJ NSCHUEGRAF KLAUS F
    • H01L21/316H01L21/331C23C13/10B05D7/22C23C16/00
    • H01L29/66242H01L21/02126H01L21/02236H01L21/02238H01L21/02255H01L21/02312H01L21/31662
    • According to a disclosed embodiment, a gas is supplied at a certain partial pressure for a chemical reaction with a top surface of a base (120) in a transistor (100). The top surface of the base (120) is heated to a certain temperature to promote the chemical reaction. For example, the gas can be oxygen, the base (120) can be an epitaxial single crystal silicon-germanium base of a heterojunction bipolar transistor ("HBT"), and the chemical reaction can be oxidation of the silicon in the top surface of the silicon-germanium base (120). In one embodiment of the invention, the partial pressure of oxygen is maintained at 0.1 atmosphere and the top surface of the base (120) is heated using rapid thermal processing ("RTP") to a temperature of 500 °C. The chemical reaction forms a dielectric layer on the top surface of the base (120). For example, using oxygen as stated above, a dielectric layer of silicon oxide ("interfacial oxide") is formed. Controlling the thickness and density of the interfacial oxide causes the gain of the transistor (100) to be as desired. For example, using oxygen in the silicon-germanium HBT at 0.1 atmosphere partial pressure, and RTP to heat the top surface of the base (120) of the HBT to 500 C, an interfacial oxide is formed with thickness approximately 9.0 to 13.0 Angstroms and area density in a range of approximately 1 * 10 to 4 *10 atoms per square centimeter, which causes the gain of the HBT to be the desired value of approximately 100.0.
    • 根据所公开的实施例,以一定的分压供应气体以与晶体管(100)中的基极(120)的顶表面进行化学反应。 将基底(120)的顶表面加热到一定温度以促进化学反应。 例如,气体可以是氧,基极(120)可以是异质结双极晶体管(“HBT”)的外延单晶硅 - 锗基底,并且化学反应可以是氧化顶部表面的硅 硅 - 锗基底(120)。 在本发明的一个实施方案中,氧的分压保持在0.1大气压,并且使用快速热处理(“RTP”)将基体(120)的顶表面加热到500℃的温度。 化学反应在基底(120)的顶表面上形成介电层。 例如,如上所述使用氧,形成氧化硅的介电层(“界面氧化物”)。 控制界面氧化物的厚度和密度导致晶体管(100)的增益是所需的。 例如,在0.1分压的硅 - 锗HBT中使用氧,并且将RTP将HBT的基底(120)的顶表面加热至500℃,形成厚度约为9.0至13.0埃的界面氧化物, 面积密度在每平方厘米约1×10 15至4×10 15原子的范围内,这导致HBT的增益为约100.0的期望值。
    • 9. 发明申请
    • SELECTIVE DEPOSITION OF SILICON OXIDE FILMS
    • 硅氧烷膜的选择性沉积
    • WO2016209570A1
    • 2016-12-29
    • PCT/US2016/035302
    • 2016-06-01
    • APPLIED MATERIALS, INC.
    • MANNA, PramitMALLICK, Abhijit Basu
    • H01L21/768H01L21/02H01L21/324
    • H01L21/02164C23C16/02C23C16/045C23C16/401H01L21/02271H01L21/02304H01L21/02312H01L21/02315
    • Embodiments described herein generally provide a method for filling features formed on a substrate. In one embodiment, a method for selectively forming a silicon oxide layer on a substrate is provided. The method includes selectively depositing a silicon oxide layer within a patterned feature formed on a surface of a substrate, wherein the patterned feature may include a deposition surface and one or more sidewalls, the one or more sidewalls may include either a silicon oxide or a silicon nitride material. The deposition surface may essentially consist of silicon, and the selectively deposited silicon oxide layer may be formed by flowing tetraethyl orthosilicate (TEOS) and ozone over the patterned feature, wherein the silicon oxide layer selectively deposits on the deposition surface of the substrate.
    • 本文描述的实施例通常提供用于填充形成在基底上的特征的方法。 在一个实施例中,提供了一种用于在衬底上选择性地形成氧化硅层的方法。 该方法包括在形成在衬底的表面上的图案化特征中选择性地沉积氧化硅层,其中所述图案化特征可以包括沉积表面和一个或多个侧壁,所述一个或多个侧壁可以包括氧化硅或硅 氮化物材料。 沉积表面可以基本上由硅组成,并且可以通过在图案化特征上流动原硅酸四乙酯(TEOS)和臭氧来形成选择性沉积的氧化硅层,其中氧化硅层选择性地沉积在衬底的沉积表面上。