Researchers develop interfacial molecular anchor for ambient all-bladed perovskite solar modules
Printing techniques are an attractive industrial pathway towards perovskite solar cells (PSCs) manufacturing due to their compatibility with large-scale, continuous production. However, SnO2 nanoparticles - commonly used as the electron transport layer - tend to aggregate during the printing process, leading to non-uniform film formation. This aggregation introduces crystallization defects in the perovskite layer and creates interfacial charge transport barriers, posing a challenge to further efficiency improvements.
Image credit: Joule
Researchers from China's Dalian Institute of Chemical Physics, Liaoning Normal University, Hubei University, Wuhan Textile University, Zhejiang University, Eastern Institute of Technology, University of Chinese Academy of Sciences and Australia's University of Technology Sydney have developed a layer of “molecular glue” that can effectively anchor the solute that suspends the monodisperse SnO2 nanoparticles into a uniform thin film and adhere it to the top perovskite during the mechanical blading process.