Regulated Crystallization of FASnI3 Films through Seeded Growth Process for Efficient Tin Perovskite Solar Cells
Citations Over TimeTop 10% of 2020 papers
Abstract
Although rapid progress has been made in tin-based perovskite solar cells (PSCs), the inferior film qualities of the solution-processed perovskites always lead to poor reproducibility and instability. Herein, we present a simple seeded growth (SG) approach to obtain high-quality tin-based perovskite films with preferred crystal orientation, large grain sizes, and fewer apparent grain boundaries. High-quality tin-based perovskite films fabricated through this SG process could greatly reduce the nonradiative recombination centers and inhibit the oxidation of Sn2+. Using formamidinium tin tri-iodide (FASnI3) perovskites, the SG-PSCs exhibit a much improved efficiency from 5.37% (control) to 7.32% with all improved photovoltaic parameters. Moreover, this SG strategy is easily applicable to other tin-based perovskite compositions. The PSC based on methylammonium (MA) doped mixed-cation perovskite (FA0.75MA0.25SnI3) exhibited a power conversion efficiency (PCE) of 8.54% with an improvement of 19.3% in the photovoltaic performance, making it a general approach for achieving efficient tin-based PSCs.
Related Papers
- → Structural Stability of Formamidinium- and Cesium-Based Halide Perovskites(2021)127 cited
- → Methylammonium-formamidinium reactivity in aged organometal halide perovskite inks(2021)51 cited
- → What are Methylammonium and Solvent Fates upon Halide Perovskite Thin‐Film Preparation and Thermal Aging?(2022)22 cited
- → Effect of Precursor Aging on Built‐In Potential in Formamidinium‐Based Perovskite Solar Cells(2020)8 cited
- → Sequential Cesium Incorporation for Highly Efficient Formamidinium-Cesium Perovskite Solar Cells(2022)1 cited