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    • 10. 发明授权
    • Method for via formation and type conversion in group II and group VI
materials
    • Ⅱ组和VI组材料通孔形成和类型转换的方法
    • US5318666A
    • 1994-06-07
    • US049755
    • 1993-04-19
    • Jerome L. ElkindGlennis J. OrloffPatricia B. Smith
    • Jerome L. ElkindGlennis J. OrloffPatricia B. Smith
    • H01L21/461H01L21/465H01L21/475H01L27/146H01L21/00
    • H01L21/76898H01L21/461H01L21/465H01L21/475H01L23/481H01L27/1467H01L2924/0002Y10S438/916Y10S438/971
    • A method of forming an n-p junction in a body (44, 44a, 44b) formed of Group II and Group VI elements. The body (44, 44a, 44b) initially is of p-type conductivity characteristic, and a dry reactive etching process is employed for forming a via (60, 60a, 60b) in the body by a chemical reaction which is also effective to type convert a portion of the body adjacent the via. An n-doped region (64, 64a, 64b) is thereby formed within the body around the via and between the via and the remaining, p-doped region of the body, thereby defining an n-p junction. In one embodiment, the body is mounted on an electrical device (50, 50a, 50b) having an input contact pad (58, 58a, 58b), and an electrically conductive layer (62, 46a, 90) is formed in connection with the contact pad and the n-doped region adjacent the via. In one application, a plurality of the n-p doped via junctions are formed in laterally spaced orientation for providing an array of infrared radiation sensitive photodiodes (24, 24a, 24b), the n-doped region of each diode having electrical connection with a respective contact pad of the electrical device.
    • 一种在由组II和VI组成的体(44,44a,44b)中形成n-p结的方法。 本体(44,44a,44b)最初是p型导电特性,采用干式反应蚀刻工艺,通过化学反应在体内形成通孔(60,60a,60b) 转换邻近通孔的身体的一部分。 因此,在体内围绕通孔和通孔与本体的剩余的p掺杂区域之间在体内形成n掺杂区域(64,64a,64b),由此限定n-p结。 在一个实施例中,主体安装在具有输入接触焊盘(58,58a,58b)的电气设备(50,50a,50b)上,并且导电层(62,46a,90)与 接触焊盘和邻近通孔的n掺杂区域。 在一个应用中,多个np掺杂的通孔结形成为横向间隔的取向以提供红外辐射敏感光电二极管阵列(24,24a,24b),每个二极管的n掺杂区域与相应的触点电连接 电气设备的垫。