摘要:
A process for forming a deposited film comprises the steps of:
(a) arranging previously a substrate for formation of a deposited film in a film forming space; (b) forming a deposited film on said substrate by introducing an activated species (A) formed by decomposition of a compound (SX) containing silicon and a halogen and an activated species (B) formed from a chemical substance (B) for film formation which is chemically mutually reactive with said activated species (A) separately from each other into said film forming space to effect chemical reaction therebetween; and (c) exposing the deposited film growth surface to a gaseous substance (E) having etching action on the deposited film to be formed during the film forming step (b) to apply etching action on the deposited film growth surface, thereby effecting preferentially crystal growth in a specific face direction.
摘要:
A process for forming a deposited film comprises:
(a) the step of arranging a substrate having a portion comprising a material which becomes the crystal nucleus for formation of a deposited film or a material capable of forming selectively said crystal nucleus into a film forming space for formation of a deposited film; (b) the film forming step of introducing an activated species (A) formed by decomposition of a compound containing silicon and a halogen and an activated species (8) formed from a chemical substance for film formation which is chemically mutually reactive with said activated species (A) separately from each other into said film forming space to effect chemical reaction therebetween and form a deposited film on said substrate; (c) the step of exposing the deposited film growth surface to a gaseous substance having etching action on the deposited film to be formed during the film forming step to apply etching action on said deposited film growth surface, thereby effecting preferentially crystal growth in a specific face direction.
摘要:
A method of fabricating a film of in-situ doped polycrystalline silicon having a surface that is free of microscopic hillocks includes the steps of providing a deposition chamber and a wafer therein on which the film is to be fabricated and introducing one gas containing silicon atoms and another gas containing dopant atoms into said chamber with respective flow rates; wherein the respective flow rate are gradually increased in an overdamped fashion over a start-up time interval of at least one minute from zero to respective steady state values while simultaneously the ratio of the respective flow rates is kept within 25% of the ratio of said steady state values.
摘要:
There is described herein a method of forming amorphous polymeric halosilane films by decomposition on a substrate of bromo-, chloro-, fluoro-, di- or polysilanes at a temperature of between about 250°C and 550°C. As an example, hexafluorodisilane was decomposed at 350°C for 45 minutes and formed a gold lightly reflective film on a glass substrate. The films so formed may have application as solar cells, thin film transistors, optical data storage media and scratch resistant coatings.
摘要:
In a method of manufacturing an amorphous silicon compound by subjecting a gas containing a silane compound to glow discharge decomposition, a substrate on which an amorphous silicon compound is deposited is positioned within plus or minus 3 cm from the end of a positive column formed by glow discharge.