Abstract
Methylammonium lead bromide (MAPbBr3) perovskites have been widely studied in applications such as lasers and light-emitting diodes, thanks to their favorable bandgap, efficient charge transport, and the possibility of processing by simple solution methods. The film morphology has a large impact on the optical and electronic properties of the material; hence the deposition methods and the type of precursors used are crucial in the preparation of efficient optoelectronic devices. Here we studied the effect of the precursor´s stoichiometry of solution processed MAPbBr3 thin films on their optical and electronic properties. We found a drastic effect of the stoichiometry on the resulting thin film morphology, and suggest the use of excess MA cations to enhance the photo- and electroluminescence of hybrid perovskites.
Original language | English |
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Pages (from-to) | 120-125 |
Number of pages | 6 |
Journal | Journal of Luminescence |
Volume | 189 |
Early online date | 23 Mar 2017 |
DOIs | |
Publication status | Published - 1 Sept 2017 |
Externally published | Yes |