AUTHOR=Adnan Muhammad , Usman Muhammad , Ali Saqib , Javed Sofia , Islam Mohammad , Akram Muhammad Aftab 

TITLE=Aluminum Doping Effects on Interface Depletion Width of Low Temperature Processed ZnO Electron Transport Layer-Based Perovskite Solar Cells

JOURNAL=Frontiers in Chemistry

VOLUME=Volume 9 - 2021

YEAR=2022

URL=https://www.frontiersin.org/journals/chemistry/articles/10.3389/fchem.2021.795291

DOI=10.3389/fchem.2021.795291

ISSN=2296-2646

ABSTRACT=Rapid improvement in efficiency and stabilities of Perovskite Solar Cells (PSCs) is indication of its prime role for future energy demands. Various research has been carried out to improve efficiency including reducing of the exciton recombination and enhancement of electron mobilities within Cell by using Electron Transport Material (ETM). In present research, electrical, Optical, and depletion width reduction properties of low temperature processed ZnO Electron Transport Layer-Based Perovskite Solar cells are studied. The of ZnO thin films varies with concentration of Al doping and improvement of optical transmission percentage up to 80% for doped samples is confirmed by optical analysis. Reduction in electrical resistance for 1% Al concentration and maximum conductivity 11697.41 (1/Ω-cm) among the prepared samples and carrier concentration 1.06×1022 cm-3 which were corroborated by Hall effect measurements. Systematic impedance spectroscopy of perovskite devices with synthesized ETM is presented in the study while the depletion width reduction is observed by Mott Schottky curves. IV measurements of device and the interfacial charge transfer between Absorber layer of methyl ammonium lead iodide and ETM also been elaborated on interface electronic Characteristics.