摘要:
A method is provided for additionally oxidizing a thin-film oxide. The method includes: providing a substrate; depositing an MyOx (M oxide) layer overlying the substrate, where M is a solid element having an oxidation state in a range of +2 to +5; treating the MyOx layer to a high density plasma (HDP) source; and, forming an MyOk layer in response to the HDP source, where k>x. In one aspect, the method further includes decreasing the concentration of oxide charge in response to forming the MyOk layer. In another aspect, the MyOx layer is deposited with an impurity N, and the method further includes creating volatile N oxides in response to forming the MyOk layer. For example, the impurity N may be carbon and the method creates a volatile carbon oxide.
摘要:
A dual-gate thin film transistor (DG-TFT) and associated fabrication method are provided. The method comprises: forming a first (back) gate in a first horizontal plane; forming source/drain (S/D) regions and an intervening channel region in a second horizontal plane, overlying the first plane; and, forming a second (top) gate in a third horizontal plane, overlying the second plane. The S/D regions and intervening channel region have a combined length, smaller than the length of the first gate. A substrate insulating layer is formed over the substrate, made from a material such as SiO2. A first gate insulation layer is formed over the first gate. Amorphous silicon (a-Si) is deposited over the first gate insulation layer and crystallized. The S/D and channel regions are formed from the crystallized Si layer. A second gate oxide layer is formed over the channel region.
摘要翻译:提供了双栅极薄膜晶体管(DG-TFT)和相关制造方法。 该方法包括:在第一水平面中形成第一(后)栅极; 在第一平面上形成源极/漏极(S / D)区域和在第二水平面中的中间沟道区域; 并且在第三水平面上形成覆盖第二平面的第二(顶部)门。 S / D区域和中间沟道区域具有小于第一栅极的长度的组合长度。 在衬底上形成衬底绝缘层,由诸如SiO 2的材料制成。 在第一栅极上形成第一栅极绝缘层。 非晶硅(a-Si)沉积在第一栅绝缘层上并结晶。 S / D和沟道区域由结晶的Si层形成。 在沟道区上形成第二栅氧化层。
摘要:
A substrate and a method for fabricating variable quality substrate materials are provided. The method comprises: selecting a first mask having a first mask pattern; projecting a laser beam through the first mask to anneal a first area of semiconductor substrate; creating a first condition in the first area of the semiconductor film; selecting a second mask having a second mask pattern; projecting the laser beam through the second mask to anneal a second area of the semiconductor film; and, creating a second condition in the second area of the semiconductor film, different than the first condition. More specifically, when the substrate material is silicon, the first and second conditions concern the creation of crystalline material with a quantitative measure of lattice mismatch between adjacent crystal domains. For example, the lattice mismatch between adjacent crystal domains can be measured as a number of high-angle grain boundaries per area, where high-angle grain boundaries are defined as boundaries separating adjacent crystal domains with a crystal lattice mismatch angle in the range between 15 and 90 degrees. To continue the example, forming a first number of high-angle grain boundaries per area in the first area may include forming adjacent high-angle grain boundaries separated by a first distance, while forming a second number of high-angle grain boundaries per area in the second area may include forming adjacent high-angle grain boundaries separated by a second distance, greater than the first distance.
摘要:
A system and method are provided to sequentially deposit a silicon dioxide base coat barrier layer adjacent a thin silicon film, to minimize the formation of water and —OH radicals. Both the base coat and thin silicon films are sputter to eliminate hydrogen chemistries. Further, the sputter processes are conducted sequentially, without breaking the vacuum seat to minimize the absorption of water in the base coat layer that conventionally occurs between deposition steps. This process eliminates the total number of process steps required, as there is no longer a need for furnace annealing the base coat before the deposition of the thin silicon film, and no longer a need for a dehydrogenation annealing step after the deposition of the thin silicon film.
摘要:
A plasmonic optical device is provided operating in near ultra violet (UV) and visible wavelengths of light. The optical device is made from a substrate and nanoparticles. The nanoparticles have a core with a negative real value relative permittivity of absolute value greater than 10 in a first range of wavelengths including near UV and visible wavelengths of light, and a shell with an imaginary relative permittivity of less than 5 in the first range of wavelengths. A dielectric overlies the substrate, and is embedded with the nanoparticles. If the substrate is reflective, a reflective optical filter is formed. If the substrate is transparent, the filter is transmissive. In one aspect, the dielectric is a tunable medium (e.g., liquid crystal) having an index of refraction responsive to an electric field. The tunable medium is interposed between a first electrode and a second electrode.
摘要:
A high-density plasma method is provided for forming a SiOXNY thin-film. The method provides a substrate and introduces a silicon (Si) precursor. A thin-film is deposited overlying the substrate, using a high density (HD) plasma-enhanced chemical vapor deposition (PECVD) process. As a result, a SiOXNY thin-film is formed, where (X+Y 0). The SiOXNY thin-film can be stoichiometric or non-stoichiometric. The SiOXNY thin-film can be graded, meaning the values of X and Y vary with the thickness of the SiOXNY thin-film. Further, the process enables the in-situ deposition of a SiOXNY thin-film multilayer structure, where the different layers may be stoichiometric, non-stoichiometric, graded, and combinations of the above-mentioned types of SiOXNY thin-films.
摘要翻译:提供了高密度等离子体法,用于形成SiO x N N Y Y薄膜。 该方法提供衬底并引入硅(Si)前体。 使用高密度(HD)等离子体增强化学气相沉积(PECVD)工艺将薄膜沉积在衬底上。 结果,形成SiO(X + Y <2和Y> 0)的SiO sub> N sub>薄膜。 SiO 2薄膜可以是化学计量的或非化学计量的。 SiO 2薄膜可以分级,这意味着X和Y的值随着SiO 2 X N的厚度而变化, SUB> Y sub>薄膜。 此外,该方法能够实现SiO 2薄膜多层结构的原位沉积,其中不同的层可以是化学计量的,非化学计量的,分级的, 以及上述类型的SiO x N N Y Y薄膜的组合。
摘要:
A mask with sub-resolution aperture features and a method for smoothing an annealed surface using a sub-resolution mask pattern are provided. The method comprises: supplying a laser beam having a first wavelength; supplying a mask with a first mask section having apertures with a first dimension and a second mask section with apertures having a second dimension, less than the first dimension; applying a laser beam having a first energy density to a substrate region; melting a substrate region in response to the first energy density; crystallizing the substrate region; applying a diffracted laser beam to the substrate region; and, in response to the diffracted laser beam, smoothing the substrate region surface. In some aspects of the method, applying a diffracted laser beam to the substrate area includes applying a diffracted laser beam having a second energy density, less than the first energy density, to the substrate region. The second energy density is in the range of 40% to 70% of the first energy density, and preferably in the range of 50% to 60% of the first energy density.
摘要:
A method is provided for forming a silicon nitride (SiNx) film. The method comprises: providing a Si substrate or Si film layer; optionally maintaining a substrate temperature of about 400 degrees C., or less; performing a high-density (HD) nitrogen plasma process where a top electrode is connected to an inductively coupled HD plasma source; and, forming a grown layer of SiNx overlying the substrate. More specifically, the HD nitrogen plasma process includes using an inductively coupled plasma (ICP) source to supply power to a top electrode, independent of the power and frequency of the power that is supplied to the bottom electrode, in an atmosphere with a nitrogen source gas. The SiNx layer can be grown at an initial growth rate of at least about 20 Å in about the first minute.
摘要:
A process of lateral crystallization is provided for increasing the lateral growth length (LGL). A localized region of the substrate is heated for a short period of time. While the localized region of the substrate is still heated, a silicon film overlying the substrate is irradiated to anneal the silicon film to crystallize a portion of the silicon film in thermal contact with the heated substrate region. A CO2 laser may be used as a heat source to heat the substrate, while a UV laser or a visible spectrum laser is used to irradiate and crystallize the film.
摘要:
A vertical thin-film transistor (V-TFT) inverter circuit and a method for forming a multi-planar layout TFT inverter circuit have been provided. The method comprising: forming a P-channel TFT with a gate, a first source/drain (S/D) region in a first horizontal plane, and a second S/D region in a second horizontal plane, different than the first horizontal plane; and, forming an N-channel TFT, adjacent the P-channel TFT, with a gate, a third S/D region in a third horizontal plane, and a fourth S/D region in the second horizontal plane, different than the third horizontal plane. Forming a P-channel TFT includes forming a P-channel top-drain vertical TFT (TDV-TFT), and forming an N-channel TFT includes forming an N-channel TDV-TFT.