Nanoscale Back Contact Perovskite Solar Cell Design for Improved Tandem Efficiency.

ABSTRACT: Tandem photovoltaics, combining absorber layers with two distinct band gap energies into a single device, provide a practical solution to reduce thermalization losses in solar energy conversion. Traditionally, tandem devices have been assembled using two-terminal (2-T) or four-terminal (4-T) configurations; the 2-T limits the tandem performance due to the series connection requiring current matching, while the standard 4-T configuration requires at least three transparent electrical contacts, which reduce the total collected power due to unavoidable parasitic absorption. Here, we introduce a novel architecture based on a nanoscale back-contact for a thin-film top cell in a three terminal (3-T) configuration. Using coupled optical-electrical modeling, we optimize this architecture for a pla

SUBMITTER: Adhyaksa GWP 

PROVIDER: S-EPMC5599876 | biostudies-literature | 2017 Sep

REPOSITORIES: biostudies-literature