Theoretical investigations on the electronic and optical properties of Na-doped CH3NH3PbI3 perovskite

Autor: Moulaoui Lhouceine, Najim Abdelhafid, Laassouli Abdelmounaim, Archi Marouane, Bakour Anass, Lachtioui Youssef, Rahmani Khalid, Bajjou Omar, Manaut Bouzid
Jazyk: English<br />French
Rok vydání: 2023
Předmět:
Zdroj: E3S Web of Conferences, Vol 469, p 00086 (2023)
Druh dokumentu: article
ISSN: 2267-1242
DOI: 10.1051/e3sconf/202346900086
Popis: The development of important materials for photovoltaic applications is rapidly advancing, particularly in the field of perovskite materials. This study investigates the optical and electronic characteristics of CH 3 NH 3 Pb I3 and analyzes the influence of doping in perovskite CH 3 NH 3 Pb I3 with different concentrations of sodium ions Na+. In this study, we employed Density Functional Theory to assess the optical and electronic properties of both pure and Na+ ion-doped CH 3 NH 3 Pb I3, with Na+ concentrations of 12.5 %, 25 %, and 37.5 %. The bandgap energy of pure CH 3 NH 3 Pb I3 rises from 1.205 eV to 1.573 eV as the concentration of Na+ ions increases from 0 % to 37.5 %, respectively. Doping with Na+ ions leads to an increase in the absorption coefficient of pristine CH 3 NH 3 Pb I3 perovskite in both UV and visible ranges. Doping likewise affects the density of states, dielectric function, and the refractive index of CH 3 NH 3 Pb I3 material. These findings offer vital insights into modulating the electronic and optical characteristics of CH 3 NH 3 Pb I3 through Na+ ion doping.
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