Abstract:
A solution containing a cyclic silane compound, which does not contain carbon, and/or a silane compound modified by boron or phosphorus is applied onto a substrate and a silicon precursor film is formed, and the film is then transformed into semiconductor silicon by heat and/or light treatment. Thereby, it is possible to easily produce a silicon film having satisfactory characteristics as an electronic material at low costs, differing from the vacuum process, such as in CVD methods.
Abstract:
A method of producing a liquid crystal alignment layer comprising exposing an organic film to polarized pulse laser beam to align molecules in a surface portion of the organic film. There is provided a liquid crystal alignment layer composed of a polyamide film having aligned molecules in a surface portion.
Abstract:
A composition for forming a high-quality tantalum film which is advantageously used as an capacitor insulating film and a process for forming the high-quality tantalum film. The composition for forming a tantalum oxide film, which comprises at least one tantalum compound selected from the group consisting of a reaction product of a compound capable of reacting with a tantalum alkoxide and a tantalum alkoxide and a hydrolyzate of the reaction product, and a solvent, and the process for forming the tantalum oxide film by applying this composition to a substrate and heating it.
Abstract:
A method for forming a silicon film which comprises discharging an ink composition (11) selectively onto a predetermined region of a substrate using an ink jet head (12) to form a pattern of a silicon precursor, and then subjecting the pattern to a treatment by heat and/or light to convert the silicon precursor to an amorphous silicon film or a poly-crystal silicon film. The method can be used for providing a silicon film pattern on a large area portion of a substrate with saving energy with a low cost.
Abstract:
A coating composition comprising either a silane compound represented by the general formula (1) SinX n or a modified silane compound represented by the general formula (2) SinX mYl and a solvent for the compound. In said formula (1) X is hydrogen or halogeno; and n is an integer of 4 or above, provided nX s may be the same or different from each other, and in said formula (2) X is hydrogen or halogeno; Y is boron or phosphorus; n is an integer of 3 or above; l is an integer of 1 or above; and m is an integer of n to 2n+3, provided mX s may be the same or different from each other. This composition is suitable for the production of devices involving the deposition of silicon films or boron- or phosphorus-doped silicon films on large-area substrates.
Abstract:
A solar cell has a structure comprising a pair of electrodes between which are interposed at least two thin layers of semiconductor containing different types and/or concentrations of impurity. A process of producing the thin semiconductor layers comprises applying a silicide-containing liquid composition to a substrate to form a coating, and converting the coating to a silicon layer by heat treatment and/or photochemical processing.
Abstract:
A composition includes (A) a compound shown by the following general formula (1), and (B) a compound shown by the following general formula (2). €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ(R 1 )nM€ƒ€ƒ€ƒ€ƒ€ƒ(1)