Nanocrystalline cadmium sulfide thin films as antireflection materials for solar cells have been prepared by a new chemical solution deposition route in an aqueous medium at 50 °C. as-deposited thin films were studied using X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), and optical absorption spectra. X-ray diffraction data indicated the formation of hexagonal na...

High-energy visible light (commonly referred to as blue light) transmittance in sunglasses plays an important role eye safety. Current standards do not have specific requirements for ocular protection, the past. However, literature has warned against potential harm caused by light. The limits imposed past state that average spectral transmission 380–500 nm range should be 20% excess of luminous...

cu(in,ga)se2 thin films (cigs) on metallic substrate (titanium, molybdenum, aluminum, stainless steel) were prepared by a two-step selenization of co-evaporated metallic precursors in se-containing environment under n2 gas flow. structural properties of prepared thin film were studied. to characterize the optical quality and intrinsic defect nature low-temperature photoluminescence, were perfor...

Solar cookers are aimed at reducing pollution and desertification in the developing world. However, they are often disregarded as they do not give users the ability to cook after daylight hours. The Wilson solar cooker is a solar cooker designed to address this problem by converting solar energy and storing that energy as heat in the form of molten salt (lithium nitrate). This thesis involved r...

Cu(In,Ga)Se2 thin films (CIGS) on metallic substrate (titanium, molybdenum, aluminum, stainless steel) were prepared by a two-step selenization of Co-evaporated metallic precursors in Se-containing environment under N2 gas flow. Structural properties of prepared thin film were studied. To characterize the optical quality and intrinsic defect nature low-temperature photoluminescence, were perfor...

Colorless phenylpropanoid derivatives are known to protect plants from ultraviolet (UV) radiation, but their photoregulation and physiological roles under field conditions have not been investigated in detail. Here we describe a fast method to estimate the degree of UV penetration into photosynthetic tissue, which is based on chlorophyll fluorescence imaging. In Arabidopsis this technique clear...

Abstract Nowadays, greenhouse covering materials have a vital role in terms of protective cultivation process. Many farmers use polyfilms, rigid or semi-rigid plastic panels, and glazing as the present scenario. However, these are known for their high cost, short service life, cause harmful environment. Solar transmittance property is one main criteria choosing any materials. This study prepare...

Abstract One of the most promising alternative energy sources has been recognized as solar energy. Solar may be utilized for electricity, thermal and power generation directly or indirectly. Sun adsorbing refrigeration systems require qualities, which can produced by concentrated collectors. Previous research found that collector components’ reflectivity transmittance is one characteristics hav...