Enhancement in the Efficiency of Sb₂ Se₃ Solar Cells by Triple Function of Lithium Hydroxide Modified at the Back Contact Interface.

ABSTRACT: The efficiency of antimony selenide (Sb₂ Se₃ ) solar cells is still limited by significant interface and deep-level defects, in addition to carrier recombination at the back contact surface. This paper investigates the use of lithium (Li) ions as dopant for Sb₂ Se₃ films, using lithium hydroxide (LiOH) as a dopant medium. Surprisingly, the LiOH solution not only reacts at the back surface of the Sb₂ Se₃ film but also penetrate inside the film along the (Sb₄ Se₆ )_n molecular chain. First, the Li ions modify the grain boundary's carrier type and create an electric field between p-type grain interiors and n-type grain boundary. Second, a gradient band structure is formed along the vertical direc

SUBMITTER: Guo H 

PROVIDER: S-EPMC10625132 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature