Preparation and optimization of heterojunction donor(DLC) – acceptor(SI) as a solar cell by DFT and PLD

Abstract

Hybrid bilayer heterojunction (DLC) thin-film P-type as an active donor layer and (Si) thin-film n-type as an acceptor with (Electron Transport Layer ), were fabricated using Qswitching Nd-YAG Pulsed Laser Deposition (PLD) method under vacuum condition 10-3 torr on two electrodes for (AL) Aluminum material is used to construct the hydride bilayer heterojunction photovoltaic solar cell (PVSC). The electrical properties of hybrid heterojunction Al / DLC / SI / AL thin film were studied. The result showed the voltage of open circuit (Vm=0.145V ), a short circuit (Jm=9.3mA/cm2 ), and the fill factor (FF) of (0.4709), with Xenon lamp with an intensity (235mw/cm2 ), the conversion efficiency (η=3.54%) at thickness(75nm). While the theoretical calculations and optimization of the HETEROJUNCTION confirmed the possibility of using it as a successful solar cell, the calculation of the small energy gap and thus the high electrical conductivity, and the determination of the type of charge carriers(p), as well as some electronic properties such as electrostatic potential surfaces and 3-D electron density, hardness, softness and electrophilicity, were clarified.

Synthesis, Characterization, and Infrared Blocking Efficiency of Polyvinyl Alcohol Composites Filled with Cadmium Sulfide and Zinc Sulfide NPs

“…This may be since NPs are characterized by the self-assembly property, and this leads to an appropriate distribution within the polymer, and this is consistent with the results of AFM. These are consistent with the results of researchers [19,29,30].…”

“…In addition to absorption, the thin film coating can also reflect a portion of the incident IR radiation. As demonstrated in in subgraph (a) of Figure 1, where it has been noticed that the absorbance continues to stabilize with increasing wavelength, but this absorbance of the specimens under study (PVA-ZnS) increases with the increase in the addition percentage of (ZnS) compound slightly These are consistent with the results of researchers [17,19]. This behavior is useful for optoelectronics, photocatalysis and solar cells.…”

“…The application scope for PVA/CdS and PVA/ZnS composites is vast. In aerospace, the coatings are pivotal for the advancement of stealth technologies, minimizing the IR signature of aircraft and drones [19,20]. The defense sector can utilize these coatings for camouflage, enhancing the concealment of personnel and equipment in combat [21,22].…”