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Room-temperature electrochemically deposited polycrystalline SnO~2~ with adjustable work function for high-efficiency perovskite solar cells by Yapeng Sun; Jiankai Zhang; Huangzhong Yu is a Engineering article available to read on EtoBox.

What is Room-temperature electrochemically deposited polycrystalline SnO~2~ with adjustable work function for high-efficiency perovskite solar cells about?

In the last two years, studies on SnO 2 preparation and optimization have proved to be effective paths toward the Schottky limit of perovskite solar cells. Herein, we used an electrochemical deposition method to obtain polycrystalline SnO 2 film at room temperature for the first time. The method has the advantage of simplicity and efficiency using electrochemistry to realize deposition, adsorption, and protection of the SnO 2 film, avoiding a more complex regulation process than the chemical bath deposition method. Benefiting from the optimization process, the method could achieve adjustable work function of the SnO 2 film by controlling the pH of the electrolyte, which is conducive for reducing mismatched energy levels between the SnO 2 film and the perovskite layer. Besides, the obtained SnO 2 film is densely and uniformly distributed along the substrate profile, leading to better light transmission. More importantly, this method can be applied to prepare SnO 2 film on large area and flexible substrates. Finally, the device based on SnO 2 film prepared with pH = 1 electrolyte achieves the highest performance of 22.85%, which is higher than that of the device based on the commerci

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Author

Yapeng Sun; Jiankai Zhang; Huangzhong Yu

Publisher

Royal Society of Chemistry (RSC)

Published

2023

Language

EN

Field

Engineering (Physical Sciences)