Optimized carrier extraction at interfaces for 23.6% efficient tin–lead perovskite solar cells
Energy & Environmental Science Royal Society of Chemistry (RSC) 15:5 (2022) 2096-2107
Operational stability, low light performance, and long-lived transients in mixed-halide perovskite solar cells with a monolayer-based hole extraction layer
(2022)
Er@C82 as a Bifunctional Additive to the Spiro‐OMeTAD Hole Transport Layer for Improving Performance and Stability of Perovskite Solar Cells
Solar RRL Wiley 5:12 (2021)
Mixed lead-tin perovskite films with >7 μs charge carrier lifetimes realized by maltol post-treatment
Chemical Science Royal Society of Chemistry 12:40 (2021) 13513-13519
Abstract:
Mixed lead–tin (Pb–Sn) halide perovskites with optimum band gaps near 1.3 eV are promising candidates for next-generation solar cells. However, the performance of solar cells fabricated with Pb–Sn perovskites is restricted by the facile oxidation of Sn(II) to Sn(IV), which induces self-doping. Maltol, a naturally occurring flavor enhancer and strong metal binding agent, was found to effectively suppress Sn(IV) formation and passivate defects in mixed Pb–Sn perovskite films. When used in combination with Sn(IV) scavenging, the maltol surface treatment led to high-quality perovskite films which showed enhanced photoluminescence intensities and charge carrier lifetimes in excess of 7 μs. The scavenging and surface treatments resulted in highly reproducible solar cell devices, with photoconversion efficiencies of up to 21.4% under AM1.5G illumination.Optimized Carrier Extraction at Interfaces for 23.6% Efficient Tin–Lead Perovskite Solar Cells
(2021)