title: Understanding the Impact of Bromide on the Photovoltaic Performance of CH3 NH3 PbI3 Solar Cells.
abstract: An optimum amount of lead bromide (1%) can enhance the power conversion efficiency of CH3 NH3 PbI3-x Brx (where x ≈ 0) devices from 14.7% to 16.9% without altering the bandgap of the perovskite material.
authors.affiliation: Group for Molecular Engineering of Functional Materials, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne, CH-1015-Lausanne, Switzerland.
authors.forename: M
authors.initials: M
authors.lastname: Ibrahim Dar
authors.affiliation: Cavendish Laboratory, JJ Thomson Avenue, Cambridge, CB3 0HE, UK.
authors.forename: Mojtaba
authors.initials: M
authors.lastname: Abdi-Jalebi
authors.affiliation: Group for Molecular Engineering of Functional Materials, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne, CH-1015-Lausanne, Switzerland.
authors.forename: Neha
authors.initials: N
authors.lastname: Arora
authors.affiliation: Laboratory of Photonics and Interfaces, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne, CH-1015-Lausanne, Switzerland.
authors.forename: Thomas
authors.initials: T
authors.lastname: Moehl
authors.affiliation: Laboratory of Photonics and Interfaces, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne, CH-1015-Lausanne, Switzerland.
authors.forename: Michael
authors.initials: M
authors.lastname: Grätzel
authors.affiliation: Group for Molecular Engineering of Functional Materials, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne, CH-1015-Lausanne, Switzerland.
authors.forename: Mohammad Khaja
authors.initials: MK
authors.lastname: Nazeeruddin
mesh_terms: D004553:Electric Conductivity; D011211:Electric Power Supplies; D007454:Iodides / Q000737:chemistry*; D007854:Lead / Q000737:chemistry*; D008744:Methylamines / Q000737:chemistry*; D017785:Photons; D012993:Solar Energy
chemical_list: D007454:Iodides; D008744:Methylamines; C032721:lead bromide; D007854:Lead; C027451:methylamine
keywords: alloying; lead bromides; perovskites; photoluminescence; solar cells