Patent ID: 6410922
Filing Date: 2002-06-25
Classification: H01L

Abstract:
A method of manufacturing a radiation detector having conductive contacts on a semiconductor substrate at positions for defining radiation detector cells, wherein said method includes steps of:a) forming one or more layers of material on a surface of said substrate with openings to said substrate surface at said contact positions; a(i) forming a layer of passivation material on said substrate surface; a(ii) forming a layer of photoresistive material on said passivation layer; a(iii) selectively exposing said photoresistive material and removing said photoresistive material from areas corresponding to said contact positions to expose said passivation layers; a(iv) removing said passivation material from said areas exposed in step a(iii) corresponding to said contact positions to expose said substrate surfaces; a(v) removing remaining photoresistive material of said photoresistive material layer; a(vi) forming a further layer of photoresistive material on said exposed passivation layer and exposed substrate surfaces; and a(vii) selectively exposing said further layer of photoresistive material and removing said further photoresistive material in a pattern corresponding to said contact positions; b) forming a layer of conductive material over said layer(s) of material and said openings; and c) removing conductive material overlying said layer(s) of material to separate individual contacts, including: c(i) removing said further layer of photoresistive material.