Interdiffusion control in sequentially evaporated organic–inorganic perovskite solar cells
Rahul A. Nambiar, David P. McMeekin, Manuel Kober Czenry, Joel A. Smith, Margherita Taddei, Pietro Caprioglio, Amit Kumar, Benjamin Putland, Junke Wang, Karim A. Elmestekawy, Akash Dasgupta, Seongrok Seo, M. Greyson Christoforo, Jin Yao, Daniel J. Graham, Laura M. Herz, David S. Ginger, Henry J. Snaith
Abstract
Humid atmosphere annealing enhances interdiffusion in sequentially evaporated perovskites, leading to improved crystallinity and reduced non-radiative recombination. This boosts PLQY and raises PCE to 21.0%, while enhancing stability under 85 °C and full-spectrum illumination.
Topics & Concepts
Perovskite (structure)Materials scienceChemical engineeringOptoelectronicsEngineeringPerovskite Materials and ApplicationsConducting polymers and applicationsOrganic Electronics and Photovoltaics