Perovskite solar cells (PSCs) have advanced rapidly with power conversion efficiencies (PCEs) now exceeding 22%. Due to the long diffusion lengths of charge carriers in the photoactive layer, a PSC device architecture comprising an electron transporting layer (ETL) is essential to optimize charge flow and collection for maximum performance. Here we report a serval novel approaches based on interfacial engineering of metal oxide to fabricated low temperature, solution-processed ETLs for PSCs using ZnO, SnO2 and In2O3. Due to the different crystallinity, energy levels, chemical compatibility, and electrical properties. We are using different strategies(such as combustion synthesis, metal oxide matrix and organic materials passivation) to passivate the metal oxide as ETL f enables PCEs approaching 19-21% for perovskite materials systems. Which gave a new path way of to fabricate the Metal oxide ETL for perovskite solar cell for commercialization.

Interfacial engineering of metal oxides as electron-transport layers for efficient and stable perovskite solar cells

2019 Fall National Meeting

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