Patent ID: 7759623

Claim:
A silicon photoelectric multiplier comprising: a p++ conductance type substrate having 10 18 -10 20 cm −3 of a doping agent concentration; a plurality of cells, each cell including: a p conductance type epitaxial layer having 10 18 -10 14 cm −3 of the doping agent concentration varied gradually, said epitaxial layer grown on the substrate; a p conductance type layer having 10 15 -10 17 cm −3 of the doping agent concentration; an n+ conductance type layer having 10 18 -10 20 cm −3 of the doping agent concentration; and a polysilicon resistor located on a silicon oxide layer in each cell, said polysilicon resistor connecting the n+ conductance type layer with a voltage distribution bus; and separating elements disposed between the cells.