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1. (WO2017156989) SEED CRYSTAL BLOCK APPLICABLE TO MONOCRYSTAL SILICON-LIKE CAST INGOT

Pub. No.:    WO/2017/156989    International Application No.:    PCT/CN2016/098669
Publication Date: Fri Sep 22 01:59:59 CEST 2017 International Filing Date: Tue Sep 13 01:59:59 CEST 2016
IPC: C30B 11/14
C30B 28/06
C30B 29/06
Applicants: NANTONG UNIVERSITY
南通大学
NANTONG ZONGYI NEW MATERIAL CO., LTD.
南通综艺新材料有限公司
Inventors: WANG, Qiang
王强
ZHOU, Haifeng
周海锋
DENG, Jie
邓洁
ZHAO, Haifei
赵有飞
ZHANG, Xiaobing
张小兵
Title: SEED CRYSTAL BLOCK APPLICABLE TO MONOCRYSTAL SILICON-LIKE CAST INGOT
Abstract:
Provided is a seed crystal block applicable to a monocrystal silicon-like cast ingot, comprising: frame seed crystal blocks for abutting against an inner wall on the periphery of a crucible and several flat-plate seed crystal blocks placed in an area surrounded by the frame seed crystal blocks, wherein splicing structures are arranged between adjacent flat-plate seed crystal blocks, and the frame seed crystal block has a bulge suitable to press the upper surface of the flat-plate seed crystal blocks from the upper side. Therefore, the flat-plate seed crystal blocks are fixed and cannot shake after being placed into the crucible because of the squeezing action of the frame seed crystal blocks; and the possibility of warping due to heating of the flat-plate seed crystal blocks is reduced, and the quality of a monocrystal cast ingot is guaranteed. Besides, by the aid of the frame seed crystal blocks, the flat-plate seed crystal blocks can be placed in the crucible in a manner closer to a horizontal placement, the placed flat-plate seed crystal blocks can be kept horizontal, providing a foundation for the improvement of the quality of the cast ingot.