摘要:
The invention relates to a method for depositing thick III-V semiconductor layers on a non-III-V substrate, particularly a silicon substrate, by introducing gaseous starting materials into the process chamber of a reactor. The aim of the invention is to carry out the crystalline deposition of thick III-V semiconductor layers on a silicon substrate without the occurrence of unfavorable lattice distortions. To this end, the invention provides that a thin intermediate layer is deposited at a reduced growth temperature between two III-V layers.
摘要:
The invention relates to a method and a device for producing Group-III-N, Group-III-V-N and metal-nitrogen component structures on Si substrates by means of organometallic gas phase epitaxy. The inventive method and the corresponding device are characterised in that a low-temperature germination layer and/or a low-temperature buffer layer is/are produced from a Group III-V semiconductor and/or a metal-Group V connecting semiconductor and a component layer or sequence of layers is produced from Group-III-N, Group-III-V-N or metal-Group-V semiconductors in a horizontal growth chamber, in that a minimal lateral temperature difference of less than 5 K, preferably less than 1K, an adjustable roof temperature and/or wall temperature and a temperature on a substrate holder that is caused to rotate by a gas cushion are maintained, the reaction gases being introduced in such a way as to prevent any unwanted interaction between the starting gases and in such a way that the procedure can be observed without disturbing the growth process.
摘要:
The invention relates to a method for the production of III-V laser components, whereby a III-V semiconductor layer is deposited on a silicon substrate in a process chamber of a reactor from a gaseous starting material. According to the invention, an economical method for the production of qualitatively high-grade laser may be achieved, whereby, firstly, an Al-containing buffer layer is deposited on the Si substrate, in particular a Si(III) substrate, on which the III-V semiconductor layer, in particular, GaN layer is then deposited such that the lattice plane thereof runs parallel to the cleavage direction of the substrate, whereby, on cleaving the substrate plane-parallel layer, cleavage surfaces are formed.
摘要:
The invention relates to a method for depositing III-V semiconductor layers on a non III-V substrate, especially a sapphire, silicon or silicon oxide substrate, or another substrate containing silicon. According to said method, a III-V layer, especially a buffer layer, is deposited on the substrate or on a III-V germination layer, in a process chamber of a reactor containing gaseous starting materials. In order to reduce the defect density of the overgrowth, a masking layer consisting of an essentially amorphous material is deposited directly on the III-V germination layer or directly on the substrate, said masking layer partially covering or approximately partially covering the germination layer. The masking layer can be a quasi-monolayer and can consist of various materials.