Jordan University of Science and Technology, Irbid, Jordan
Topics
Photonics for Solar Energy Systems X-Ray Photoelectron Spectroscopy
Biography
Research interests focus functional nanostructured materials for optoelectronic and energy applications, like Perovskite, photovoltaics, MEMS, semiconductors, Nanoantenna, electromagnetics, nanophotonics, microwave, metamaterials, plasmonics.
The purpose of such research is to comprehensively
investigate the impact of various structures of Electron
Transmission Layer (ETL) on the optical and structural
properties of Perovskite solar cells. Four structures of electron
transmission layers were investigated with controlled
thicknesses. These structures were a single-layer of ⁓ 50 nm
ZnO, a single-layer of ⁓ 50 nm TiO2, Bi-layer of TiO2 / ZnO
(10/50 nm), and a Tri-layer of TiO2 / ZnO / TiO2 (10/50/10 nm).
UV-Vis spectroscopy revealed that the ZnO thin film of ⁓ 50
nm thickness transmits higher amount of visible light toward
Perovskite thin film than its counterparts, while TiO₂ ETLs is a
perfect UV light-blocker. XRD and SEM analyses showed that
a ZnO single layer enhanced perovskite crystallinity up to ~
89.5% and reduced strain by ~ 96%, making a smoother, more
uniform polycrystalline surface. These findings confirm ZnO as
the most efficient ETL for improving PSC performance, and
TiO₂ offering additional UV protection. This work is a
synergetic marriage between nanotechnology and the perfect
light-absorbing material – Perovskite, –where a very efficient
light-harvesting device with high crystallinity, higher stable and
less amount of defect is produced.
