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公开(公告)号:US5856231A
公开(公告)日:1999-01-05
申请号:US596119
申请日:1996-04-12
申请人: Ekkehard Niemann , Juergen Schneider , Harald Mueller , Karin Maier, deceased , Hildegard Inge Maier, heiress , Elke Maier, heiress
发明人: Ekkehard Niemann , Juergen Schneider , Harald Mueller , Karin Maier, deceased , Hildegard Inge Maier, heiress , Elke Maier, heiress
IPC分类号: C30B29/36 , C30B23/00 , C30B23/02 , H01L21/04 , H01L21/322 , H01L29/161 , H01L29/24 , H01L29/38 , H01L21/265
CPC分类号: H01L29/1608 , C30B23/02 , C30B29/36 , H01L21/0445 , Y10S438/931
摘要: A process for producing high-resistance SiC from low-resistance SiC starting material. The flat (shallow) donor levels of a prevailing nitrogen impurity are overcompensated by admixture of a trivalent doping element with the concentration of the doping element in the SiC being such that it changes the conductivity type from a n-conductivity to a p-conductivity. In addition, a transition element is added having donor levels approximately in the middle of the SiC energy gap, so that the excess acceptor levels are in turn compensated and a high specific resistance is achieved.
摘要翻译: PCT No.PCT / EP94 / 02400 Sec。 371日期:1996年4月12日 102(e)日期1996年4月12日PCT提交1994年7月21日PCT公布。 公开号WO95 / 04171 日期1995年2月9日由低电阻SiC原料制造高电阻SiC的方法。 主要氮杂质的扁平(浅)供体水平通过三价掺杂元素与SiC中掺杂元素的浓度的混合而过度补偿,使得其将导电类型从n导电性改变为p导电性。 此外,添加具有大约在SiC能隙的中间的供体水平的过渡元素,从而反过来补偿过量的受体水平并实现高的电阻率。