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Methylammonium and Bromide‐Free Tin‐Based Low Bandgap Perovskite Solar Cells by Tahir Imran; Sajid Rauf; Hasan Raza; Liaquat Aziz; Rui Chen; Sanwan Liu; Jianan Wang; Muhammad Ashfaq Ahmad; Shasha Zhang; Yiqiang Zhang; Zonghao Liu; Wei Chen is a Engineering article available to read on EtoBox.

What is Methylammonium and Bromide‐Free Tin‐Based Low Bandgap Perovskite Solar Cells about?

its volatility and reversible/irreversible decomposition reaction even at low temperature, MA is gradually avoided in the material designs. At the same time, FA is more thermally stable than MA due to its stronger hydrogen bonding with PbX 6 octahedra and benign reversible decomposition reaction below 85 °C, and it is the primary cation in practically all current high-performance PSCs. Also, FA has no irreversible (nonselective) back reaction. At the same time, in order to approach the bandgap of 1.34 eV according to the Schottky-Queisser (S-Q) limit, from initially MAPbI 3 to double cation (MAFA or FACs), triple cation (CsMAFA) based perovskites, eventually to quadruple (CsRbMAFA) based perovskites, and recently FAPbI 3 are dominated ones. FAPbI 3 has an ideal, narrow bandgap since FA remains the largest organic cation that fits into a 3D perovskite crystal structure. The implicit or explicit goal of perovskite research is to obtain a black FA-based (stable phase) perovskite at room temperature. Avoiding yellow phase impurities encouraged the advancement of processing techniques and elaborate multication, multi-halide mixtures.It has been proved that the invasion of Br anion at th

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Author

Tahir Imran; Sajid Rauf; Hasan Raza; Liaquat Aziz; Rui Chen; Sanwan Liu; Jianan Wang; Muhammad Ashfaq Ahmad; Shasha Zhang; Yiqiang Zhang; Zonghao Liu; Wei Chen

Publisher

Wiley

Published

2022

Language

EN

Field

Engineering (Physical Sciences)