One-Step Formation of Low Work-Function, Transparent and Conductive MgF_x O_y Electron Extraction for Silicon Solar Cells.

ABSTRACT: The development of high-performance dopant-free silicon solar cells is severely bottlenecked by opaque electron selective contact. In this paper, high transmittance (80.5% on glass) and low work function (2.92 eV) lithium fluoride (LiF_x )/MgF_x O_y electron contact stack by tailoring the composition of MgF_x O_y hybrid film is reported. This hybrid structure exhibits a high conductivity (2978.4 S cm^-1 ) and a low contact resistivity (2.0 mΩ cm² ). The element profile of LiF_x /MgF_x O_y contact is measured and the reaction kinetics is analyzed. As a proof-of-concept, this electron selective contact is applied for dopant-free silicon solar cells. An impressive efficiency of 21.3% is achiev

SUBMITTER: Li J 

PROVIDER: S-EPMC9376844 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature