In situ recombination junction between p-Si and TiO₂ enables high-efficiency monolithic perovskite/Si tandem cells.

ABSTRACT: Increasing the power conversion efficiency of silicon (Si) photovoltaics is a key enabler for continued reductions in the cost of solar electricity. Here, we describe a two-terminal perovskite/Si tandem design that increases the Si cell's output in the simplest possible manner: by placing a perovskite cell directly on top of the Si bottom cell. The advantageous omission of a conventional interlayer eliminates both optical losses and processing steps and is enabled by the low contact resistivity attainable between n-type TiO₂ and Si, established here using atomic layer deposition. We fabricated proof-of-concept perovskite/Si tandems on both homojunction and passivating contact heterojunction Si cells to demonstrate the broad applicability of the interlayer-free concept. Stabilize

SUBMITTER: Shen H 

PROVIDER: S-EPMC6294601 | biostudies-literature | 2018 Dec

REPOSITORIES: biostudies-literature