He Rui, Ph.D. from Sichuan University, supervised by Professor Zhao Dewei.
Research Interests: Efficient and stable wide-band-gap perovskite solar cells and all-perovskite stacked solar cells.
Achievements: He Rui addressed defects in the bulk phase and interface of wide-band-gap perovskite using doping control and interface modification strategies to enhance material quality and device performance. Detailed analyses elucidated the crystallization dynamics of wide-band-gap perovskite materials and carrier dynamics within devices. He also successfully developed wide-band-gap perovskite solar cells with low interfacial non-radiative recombination loss and high open-circuit voltage. Further innovations in intermediate connecting layer design led to the construction of highly efficient all-perovskite stacked solar cells, setting a world record for efficiency in this field.