title: High Open-Circuit Voltages in Tin-Rich Low-Bandgap Perovskite-Based Planar Heterojunction Photovoltaics.
abstract: Low-bandgap CH3NH3(PbxSn1-x)I3(0 ≤ x ≤ 1) hybrid perovskites (e.g., ≈1.5-1.1 eV) demonstrating high surface coverage and superior optoelectronic properties are fabricated. State-of-the-art photovoltaic (PV) performance is reported with power conversion efficiencies approaching 10% in planar heterojunction architecture with small (<450 meV) energy loss compared to the bandgap and high (>100 cm2V-1s-1) intrinsic carrier mobilities.
authors.affiliation: Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge, CB3 0HE, UK.
authors.forename: Baodan
authors.initials: B
authors.lastname: Zhao
authors.affiliation: Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge, CB3 0HE, UK.
authors.forename: Mojtaba
authors.initials: M
authors.lastname: Abdi-Jalebi
authors.affiliation: Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge, CB3 0HE, UK.
authors.forename: Maxim
authors.initials: M
authors.lastname: Tabachnyk
authors.affiliation: Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge, CB3 0HE, UK.
authors.forename: Hugh
authors.initials: H
authors.lastname: Glass
authors.affiliation: Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge, CB3 0HE, UK.
authors.forename: Varun S
authors.initials: VS
authors.lastname: Kamboj
authors.affiliation: Los Alamos National Laboratory, Los Alamos, NM, 87545, USA.
authors.forename: Wanyi
authors.initials: W
authors.lastname: Nie
authors.affiliation: Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge, CB3 0HE, UK.
authors.forename: Andrew J
authors.initials: AJ
authors.lastname: Pearson
authors.affiliation: Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge, CB3 0HE, UK.
authors.forename: Yuttapoom
authors.initials: Y
authors.lastname: Puttisong
authors.affiliation: Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge, CB3 0HE, UK.
authors.forename: Karl C
authors.initials: KC
authors.lastname: Gödel
authors.affiliation: Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge, CB3 0HE, UK.
authors.forename: Harvey E
authors.initials: HE
authors.lastname: Beere
authors.affiliation: Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge, CB3 0HE, UK.
authors.forename: David A
authors.initials: DA
authors.lastname: Ritchie
authors.affiliation: Los Alamos National Laboratory, Los Alamos, NM, 87545, USA.
authors.forename: Aditya D
authors.initials: AD
authors.lastname: Mohite
authors.affiliation: Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge, CB3 0HE, UK.
authors.forename: Siân E
authors.initials: SE
authors.lastname: Dutton
authors.affiliation: Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge, CB3 0HE, UK.
authors.forename: Richard H
authors.initials: RH
authors.lastname: Friend
authors.affiliation: Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge, CB3 0HE, UK.
authors.forename: Aditya
authors.initials: A
authors.lastname: Sadhanala
keywords: Urbach energy; high mobility perovskites; lead-tin perovskite PV; low-bandgap perovskites