Perovskite Solar Cells (PSCs) are viewed as a promising technology for next-generation photovoltaics, thanks to their high efficiency and low cost of production. This has the potential to transform the renewable energy industry. Despite this potential, the current layer-by-layer manufacturing method
presents obstacles that have prevented the widespread commercialization of PSCs. Fortunately, researchers from City University of Hong Kong and thein the US have recently collaborated to develop an innovative, one-step solution-coating process that simplifies the manufacturing procedure and reduces the barriers to commercializing PSCs.
Typically, PSCs are fabricated using a layer-by-layer process, which involves sequentially depositing different layers of the solar cell on top of each other. While this approach has been successful in producing high-performance perovskite solar cells, it causes issues that may hinder their commercialization, such as increased fabrication cost, unsatisfactory uniformity, and reproducibility.
They found that if specific phosphonic or carboxylic acids are added to perovskite precursor solutions, the solution will self-assemble on the indium tin oxide substrate during perovskite film processing. They form a robust self-assembled monolayer as an excellent hole-selective contact while the perovskite crystallizes.
“By introducing this innovative approach, we hope to contribute to the perovskite research community by proposing a more straightforward method for manufacturing high-performance perovskite solar cells and potentially accelerating the process of bringing them to market,” said Dr. Zhu.
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