Impact of excess PbI2 on the structure and the temperature dependent optical properties of methylammonium lead iodide perovskites

• DOI: 10.1039/c8tc02237b
• Publication Date: 2018-06-15T09:09:34Z
• Authors: Tobias Meier; Tanaji P. Gujar; Andreas Schönleber; Selina Olthof; Klaus Meerholz; Sander van Smaalen; Fabian Panzer; Mukundan Thelakkat; Anna Köhler
• Keywords: 7. Clean energy; 01 natural sciences; 0104 chemical sciences

Excess PbI2 in MAPbI3 thin films has no direct impact on the electronic structure but changes the temperature dependence of the exciton binding energy and the phase transition behaviour.