Abstract
Thin films of CBD are formed on metal surfaces from an aqueous solution containing Pb(NO3)2 and Na2O4Se. The impact of the bath temperature upon lead selenide NPs is analyzed. The evaluation of X-ray diffraction demonstrates that the produced NPs were polycrystalline with (111) orientation. The morphological analysis of the surface shows that the grains are spherical gemstones. As the bath temperature was raised from 20 to 85 degrees Celsius, the energy bandgap decreased from 2.4 to 1.2 eV, indicating a reduction in the band gap. Micron-sized nanoparticles produced at 85 degrees Celsius exhibited the best crystallinity and were uniformly spread across the surface of the substrate with excellent particle sizes. If the solution bath temperature increases from 20°C to 85°C, the average strength of PL decreases. The maximum photoluminescence strength is predominantly because of self-trapped exciton recombination, formed from O2 vacancy and particle size called defect centers, for the deposited thin films at 45°C and 85°C. The photoluminescence intensity rises sequentially with all temperatures. Therefore, the finest solution temperature is 85 degrees Celsius.
Highlights
The world is in trouble of air pollution released from nonrenewable sources of energy such as coal, natural gas, fossil fuels, and fabrics [1]
A wide-ranging investigation has been dedicated to producing numerous kinds of semiconductor thin films which are applicable in renewable sources of energy like solar cells [2]
Diffraction across the (111) plane exhibits the maximum intensity with a well-defined sharp peak, suggesting that the material processed has a high degree of crystallinity
Summary
The world is in trouble of air pollution released from nonrenewable sources of energy such as coal, natural gas, fossil fuels, and fabrics [1]. A wide-ranging investigation has been dedicated to producing numerous kinds of semiconductor thin films which are applicable in renewable sources of energy like solar cells [2]. This is because of their potential uses in the production of photovoltaic materials, optical-electronic devices, sensors, and infrared indicator instruments [3]. There are very few chemically prepared lead selenide thin films reported by using glass substrates in an alkaline base. This can make deletions of films and affect the quality of prepared films. We have used metallic substrates to grow PbSe thin films by chemical bath deposition procedure in an acidic medium
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