Laminates improve perovskite PV performance

A collaborative research team from the Hong Kong University of Science and Technology (HKUST) and the Hong Kong Polytechnic University (PolyU) has developed an innovative laminated interface microstructure that enhances the stability and photoelectric conversion efficiency of inverted perovskite solar cells.

The team’s research findings have been published in Nature Synthesis, in a paper titled 'Synthesis of a Lattice-Resolved Laminate-Structured Perovskite Heterointerface'.

The basic structures of perovskite solar cells are classified into two types: standard and inverted. The inverted structure demonstrates better application prospects because the electronic materials used in each layer are more stable compared to those in the standard configuration.

However, challenges related to interface science still exist in inverted devices, particularly concerning defect accumulation at the interface between the fullerene-based electron transport layer and the perovskite surface. This defect accumulation significantly impacts the device’s performance and stability.