title: Efficient and Air-Stable Mixed-Cation Lead Mixed-Halide Perovskite Solar Cells with n-Doped Organic Electron Extraction Layers.
abstract: Air-stable doping of the n-type fullerene layer in an n-i-p planar heterojunction perovskite device is capable of enhancing device efficiency and improving device stability. Employing a (HC(NH2)2)0.83Cs0.17Pb(I0.6Br0.4)3perovskite as the photoactive layer, glass-glass laminated devices are reported, which sustain 80% of their "post burn-in" efficiency over 3400 h under full sun illumination in ambient conditions.
authors.affiliation: Clarendon Laboratory, Department of Physics, University of Oxford, Parks Road, Oxford, OX1 3PU, UK.
authors.forename: Zhiping
authors.initials: Z
authors.lastname: Wang
authors.affiliation: Clarendon Laboratory, Department of Physics, University of Oxford, Parks Road, Oxford, OX1 3PU, UK.
authors.forename: David P
authors.initials: DP
authors.lastname: McMeekin
authors.affiliation: Clarendon Laboratory, Department of Physics, University of Oxford, Parks Road, Oxford, OX1 3PU, UK.
authors.forename: Nobuya
authors.initials: N
authors.lastname: Sakai
authors.affiliation: Clarendon Laboratory, Department of Physics, University of Oxford, Parks Road, Oxford, OX1 3PU, UK.
authors.forename: Stephan
authors.initials: S
authors.lastname: van Reenen
authors.affiliation: Clarendon Laboratory, Department of Physics, University of Oxford, Parks Road, Oxford, OX1 3PU, UK.
authors.forename: Konrad
authors.initials: K
authors.lastname: Wojciechowski
authors.affiliation: Clarendon Laboratory, Department of Physics, University of Oxford, Parks Road, Oxford, OX1 3PU, UK.
authors.forename: Jay B
authors.initials: JB
authors.lastname: Patel
authors.affiliation: Clarendon Laboratory, Department of Physics, University of Oxford, Parks Road, Oxford, OX1 3PU, UK.
authors.forename: Michael B
authors.initials: MB
authors.lastname: Johnston
authors.affiliation: Clarendon Laboratory, Department of Physics, University of Oxford, Parks Road, Oxford, OX1 3PU, UK.
authors.forename: Henry J
authors.initials: HJ
authors.lastname: Snaith
keywords: doping; long-term stability; mixed-cation mixed-halide; perovskite solar cells