AUTHOR=Bouich Amal , Marí-Guaita Júlia , Sahraoui Bouchta , Palacios Pablo , Marí Bernabé 

TITLE=Tetrabutylammonium (TBA)-Doped Methylammonium Lead Iodide: High Quality and Stable Perovskite Thin Films

JOURNAL=Frontiers in Energy Research

VOLUME=10

YEAR=2022

URL=https://www.frontiersin.org/journals/energy-research/articles/10.3389/fenrg.2022.840817

DOI=10.3389/fenrg.2022.840817

ISSN=2296-598X

ABSTRACT=<p>This work reported the successive incorporation of tetrabutylammonium (TBA) into Methylammonium lead Iodide (MAPbI<sub>3</sub>) perovskite. The thin films were characterized by X-Ray diffraction (XRD), Scanning electron microscopy (SEM), Transmittance electron microscopy (TEM), Atomic force microscopy (AFM), and UV-Visible spectroscopy. It was shown that introducing TBA increases the crystallinity, grain size, surface morphology without pin-hole, and roughness of the MAPbI<sub>3</sub> thin films. Moreover, the MA<sub>(1-X)</sub>TBA<sub>X</sub> PbI<sub>3</sub> thin film shows better stability in a relative humidity of ∼60% after 15 days than the pure MAPbI<sub>3</sub> thin film. The obtained results are hoped to be helpful for stability and improvement of the performance of the MAPbI<sub>3</sub> thin films by doping TBA cations under ambient conditions.</p>