Open AccessStudy of the Optical and Structural Properties of PbI2 Thin Films Prepared by Spin Coating Technique at Room Temperature
Author(s) -
Share Mohammed,
K H Amani
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1795/1/012019
Subject(s) - spin coating , band gap , materials science , thin film , deposition (geology) , spinning , substrate (aquarium) , coating , analytical chemistry (journal) , optics , composite material , nanotechnology , optoelectronics , chemistry , organic chemistry , paleontology , oceanography , physics , sediment , geology , biology
Lead iodide thin films were deposited on a glass substrate using a spin coating technique. Powder of with a concentration (0.2M) was dissolved in a solution of Dimethylformamide (DMF). the thickness of the prepared films was controlled through the time of deposition and the spinning speed. the X-ray patterns show that the PbI 2 thin films have hexagonal structures The bandgap of the thin films was measured optically and found to be about 2.45 eV. The FTIR measurements depicted the vibration modes from 1650 to 700 cm −1 ; the energy bandgap from the diffused reflectivity measurements was 2.4 eV; which is in a good agreement with energy gap from Tauc plot. (FESEM) images shows the nano rod shape of particles with large pores and non uniform distribution of particles