Light-emitting or light-receiving semiconductor device and method for making the same

摘要

A semiconductor light-emitting or light-receiving semiconductor device including a cylindrical semiconductor element formed from a p-type silicon single crystal; first and second flat surfaces (42,43); a n-type diffusion layer (44) and a pn junction (45) thereof; a type p+ recrystallized layer (47); a reflection prevention film (46); a negative electrode (49a) and a positive electrode (49b).