摘要:
A method is provided for forming a fluorinated silicate glass layer with HDP-CVD having a lower dielectric constant without compromising the mechanical properties of hardness and compressive stress. A gaseous mixture comprising a silicon-containing gas, an oxygen-containing gas, and a fluorine-containing gas is provided to a process chamber. The ratio of the flow rate of the fluorine-containing gas to the flow rate of the silicon-containing gas is greater than 0.65. A high-density plasma is generated from the gaseous mixture by applying a source RF power having a power density less than 12 W/cm2. A bias is applied to a substrate in the process chamber at a bias power density greater than 0.8 W/cm2 and less than 2.4 W/cm2. The fluorinated silicate glass layer is deposited onto the substrate using the high-density plasma.
摘要翻译:提供了一种用于在不影响硬度和压缩应力的机械性能的情况下形成具有较低介电常数的HDP-CVD的氟化硅酸盐玻璃层的方法。 将包含含硅气体,含氧气体和含氟气体的气体混合物提供到处理室。 含氟气体的流量与含硅气体的流量比大于0.65。 通过施加功率密度小于12W / cm 2的源RF功率,从气体混合物产生高密度等离子体。 以大于0.8W / cm 2且小于2.4W / cm 2的偏压功率密度对处理室中的衬底施加偏压。 使用高密度等离子体将氟化硅酸盐玻璃层沉积在基板上。
摘要:
Abstract of the Disclosure A gapfill process is provided using cycling of HDP-CVD deposition, etching, and deposition step. The fluent gas during the first deposition step includes an inert gas such as He, but includes H2 during the remainder deposition step. The higher average molecular weight of the fluent gas during the first deposition step provides some cusping over structures that define the gap to protect them during the etching step. The lower average molecular weight of the fluent gas during the remainder deposition step has reduced sputtering characteristics and is effective at filling the remainder of the gap.
摘要:
Embodiments of the present invention provide a highly uniform low cost production worthy solution for manufacturing low propagation loss optical waveguides on a substrate. In one embodiment, the present invention provides a method of forming a PSG optical waveguide on an undercladding layer of a substrate that includes forming at least one silicate glass optical core on said undercladding layer using a plasma enhanced chemical vapor deposition process including a silicon source gas, an oxygen source gas, and a phosphorus source gas, wherein the oxygen source gas and silicon source gas have a ratio of oxygen atoms to silicon atoms greater than 20:1.
摘要:
Embodiments of the present invention provide a highly uniform low cost production worthy solution for manufacturing low propagation loss optical waveguides on a substrate. The method comprises depositing an optical core using a high-density plasma deposition process. The method is particularly advantageous in forming high contrast refractive index optical cores, such as SiOxNy, with drastically reduced propagation loss. In one embodiment the high-density plasma deposition process is an HDP-CVD process. In another embodiment the high-density plasma deposition process is an HDP-ECR process. In one embodiment, a method of forming an optical waveguide comprises forming at least one optical core on an undercladding layer of a substrate using a high-density plasma deposition process.
摘要翻译:本发明的实施例提供了用于在衬底上制造低传播损耗光波导的高度均匀的低成本生产有价值的解决方案。 该方法包括使用高密度等离子体沉积工艺沉积光学芯。 该方法特别有利于形成高对比度折射率光学芯,例如SiO x N y,具有显着降低的传播损耗。 在一个实施例中,高密度等离子体沉积工艺是HDP-CVD工艺。 在另一个实施例中,高密度等离子体沉积工艺是HDP-ECR工艺。 在一个实施例中,形成光波导的方法包括使用高密度等离子体沉积工艺在衬底的底层上形成至少一个光学芯。
摘要:
A combination of deposition and polishing steps are used to permit improved uniformity of a film after the combination of steps. Both the deposition and polishing are performed with processes that vary across the substrate. The combination of the varying deposition and etching rates results in a film that is substantially planar after the film has been polished. In some instances, it may be easier to control the variation of one of the two processes than the other so that the more controllable process is tailored to accommodate nonuniformities introduced by the less controllable process.
摘要:
A film is deposited on a substrate disposed in a substrate processing chamber. The substrate has a trench formed between adjacent raised surfaces. A first portion of the film is deposited over the substrate from a first gaseous mixture flowed into the process chamber by chemical-vapor deposition. Thereafter, the first portion is etched by flowing an etchant gas having a halogen precursor, a hydrogen precursor, and an oxygen precursor into the process chamber. Thereafter, a second portion of the film is deposited over the substrate from a second gaseous mixture flowed into the processing chamber by chemical-vapor deposition.