TY - JOUR
T1 - Effect of the precursor's stoichiometry on the optoelectronic properties of methylammonium lead bromide perovskites
AU - Longo, Giulia
AU - Wong, Alan
AU - Sessolo, Michele
AU - Bolink, Henk J.
N1 - The authors acknowledgefinancial support from the EuropeanUnion 7th framework program project LUMINET (grant 316906),the Spanish Ministry of Economy and Competitiveness (MINECO)via the Unidad de Excelencia María de Maeztu MDM-2015-0538,MAT2014-55200-R, and PCIN-2015-255 and the Generalitat Va-lenciana (Prometeo/2016/135). A.W. is supported by a French Na-tional Research Agency under ANR-16-CE11-0023 (HRmicroMAS).M.S. thanks the MINECO for his post-doctoral (JdC) contract.
PY - 2017/9/1
Y1 - 2017/9/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85016118192&partnerID=8YFLogxK
U2 - 10.1016/j.jlumin.2017.03.048
DO - 10.1016/j.jlumin.2017.03.048
M3 - Article
AN - SCOPUS:85016118192
VL - 189
SP - 120
EP - 125
JO - Journal of Luminescence
JF - Journal of Luminescence
SN - 0022-2313
ER -