PHOTOELECTRIC CONVERSION ELEMENT AND SOLAR CELL

摘要

An aspect of one embodiment, there is provided a photoelectric conversion element, including a first electrode having optical transparency, a second electrode, and an optical absorption layer provided between the first electrode and the second electrode, the optical absorption layer having a compound semiconductor constituted with a chalcopyrite structure or a stannite structure, the compound semiconductor having a first element of a Group 11 element and a second element of a Group 16 element and comprising a p-type portion and an n-type portion provided between the p-type portion and the first electrode, the n-type portion and the p-type portion jointly having a homo junction, wherein the n-type portion comprises a dopant which has a formal charge Vb being not less than 1.60 and not more than 2.83.

主权项

1. A photoelectric conversion element, comprising:
a first electrode having optical transparency; a second electrode; and an optical absorption layer provided between the first electrode and the second electrode, the optical absorption layer having a compound semiconductor constituted with a chalcopyrite structure or a stannite structure, the compound semiconductor having a first element of a Group 11 element and a second element of a Group 16 element and comprising a p-type portion and an n-type portion provided between the p-type portion and the first electrode, the n-type portion and the p-type portion jointly having a homo junction; wherein the n-type portion comprises a dopant which has a formal charge Vb being not less than 1.60 and not more than 2.83 and being represented by a Formula (1),Vb=∑j=1nexp(r0-riBf)(1) where a bond length between the first element and the second element is ri angstrom when the first element is substituted with the dopant, a bond parameter between the first element and the second element is r0 angstrom, an identification number determined by a combination between the first element and the second element is Bf angstrom, a number of neighboring bonds of the second element to the first element is n which is an integer and not less than one.