Title:
SEMIICONTINUOUS PRODUCING METHOD AND APPARATUS OF SILICON MOLDED ARTICLE
Document Type and Number:
Japanese Patent JPS5454977
Kind Code:
A
Abstract:
The invention relates to a process and apparatus for manufacturing silicon castings or moldings, having a columnar structure of single-crystal regions of crystal with a preferential crystallographic orientation, and which can be manufactured cheaply and in large numbers in a semi-continuous mode of production. Liquid silicon is cast in a casting station, under an inert gas and preferably under reduced pressure, preferably in graphite molds which are exposed to a temperature gradient of 200 DEG to 1,000 DEG C. After cooling, the silicon is withdrawn automatically via a transport chamber connected to the casting station into special cooling stations, while the casting station is reloaded with an empty mold for repeating the process. The silicon blocks which have preferably been produced by this procedure are use as basic material for inexpensive solar cells having efficiencies of more than 10%, after they have been sawn into individual small wafers and have been doped and lead-bonded.
Inventors:
HERUMUUTO TSUAUHARU
BERUNHARUTO AUTEIEERU
ROORANDO RUPUTOFUITSUTSU
REONHARUTO SHIYUMITSUTOHANMAA
BERUNHARUTO AUTEIEERU
ROORANDO RUPUTOFUITSUTSU
REONHARUTO SHIYUMITSUTOHANMAA
Application Number:
JP7878978A
Publication Date:
May 01, 1979
Filing Date:
June 30, 1978
Export Citation:
Assignee:
WACKER CHEMITRONIC
International Classes:
C30B11/00; B22D9/00; C30B29/06; (IPC1-7): B01J17/06