Researchers from India’s CSIR-Central Scientific Instruments Organization have reported a systematic study on the role of graphene-based interfacial engineering in flexible all-inorganic perovskite solar cells.
The team incorporated reduced graphene oxide (rGO) into SnO₂ and TiO₂ electron transport layers, forming graphene-modified metal-oxide interfaces that enhance interfacial conductivity and suppress trap-assisted recombination. This approach also mitigates hysteresis and improves mechanical resilience, contributing to a power conversion efficiency of 19.2% and retention of over 90% efficiency after 1,000 bending cycles at a 5 mm radius.
The results highlight how graphene-derived interfacial modification can systematically improve electronic contact quality and mechanical reliability in flexible optoelectronic architectures, providing a pathway toward scalable and environmentally compatible perovskite photovoltaics.
 

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