Alumina Nanoparticle Interfacial Buffer Layer for Low-Bandgap Lead-Tin Perovskite Solar Cells - Jin, H; Farrar, M; Ball, J; Dasgupta, A; Caprioglio, P; Narayanan, S; Oliver, R; Rombach, F; Putland, B; Johnston, M; Snaith, H (University of Oxford, 2024)