Luminescence enhancement effects on nanostructured perovskite thin films for Er/Yb-doped solar cells.

ABSTRACT: Recent attempts to improve solar cell performance by increasing their spectral absorption interval incorporate up-converting fluorescent nanocrystals on the structure. These nanocrystals absorb low energy light and emit higher energy photons that can then be captured by the solar cell active layer. However, this process is very inefficient and it needs to be enhanced by different strategies. In this work, we have studied the effect of nanostructuration of perovskite thin films used in the fabrication of hybrid solar cells on their local optical properties. The perovskite surface was engraved with a focused ion beam to form gratings of one-dimensional grooves. We characterized the surfaces with a fluorescence scanning near-field optical microscope, and obtained maps showing a fringe pattern

SUBMITTER: Hu Z 

PROVIDER: S-EPMC9419586 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature