Additive engineering for efficient wide-bandgap perovskite solar cells with low open-circuit voltage losses.

ABSTRACT: High-performance wide-bandgap (WBG) perovskite solar cells are used as top cells in perovskite/silicon or perovskite/perovskite tandem solar cells, which possess the potential to overcome the Shockley-Queisser limitation of single-junction perovskite solar cells (PSCs). However, WBG perovskites still suffer from severe nonradiative recombination and large open-circuit voltage (Voc) losses, which restrict the improvement of PSC performance. Herein, we introduce 3,3'-diethyl-oxacarbo-cyanine iodide (DiOC₂(3)) and multifunctional groups (C=N, C=C, C-O-C, C-N) into perovskite precursor solutions to simultaneously passivate deep level defects and reduce recombination centers. The multifunctional groups in DiOC₂(3) coordinate with free Pb²⁺ at symmetric sites, pa

SUBMITTER: Yu X 

PROVIDER: S-EPMC11402806 | biostudies-literature | 2024

REPOSITORIES: biostudies-literature