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Tuning Ag+ and Mn2+ doping in ZnS:Ag,Mn embedded polymers for flexible white light emitting films
Flexible Light Emitting Diodes are versatile lighting solutions that offer bendable and adaptable illumination possibilities. A soft, flexible white luminescent film (1 mm) shows promise for foldable electroluminescent devices and applications. This film was fabricated using ZnS:Ag and Mn. Under different excitation wavelengths, the phosphors emit blue light due to Ag+ luminescence centers and red light from the d-d transition of Mn2+. The blue emission is greatly suppressed at high Mn2+ doping levels, requiring reduced Ag+ doping in co-doped ZnS:Ag,Mn compared to solo-doped ZnS:Ag samples. By adjusting Ag+ and Mn2+ concentrations, the ZnS:Ag(1%),Mn(0.2%) phosphors show a proper intensity ratio of blue and red emissions, making them a promising candidate for future white light applications.
Selling Out
In a powerful defence of the values that define education, Howard Woodhouse uses concrete and vivid examples to show how universities in Canada have been engulfed by the market model of education and how administrators have done little to resist this trend.
Catalytic Transformations of Sustainable and Versatile Furanic Chemicals
Diminishing confined fossil resources has spurred the scientific community to strive for alternative, sustainable resources, such as terrestrial biomass, which can potentially substitute fossil-based derivatives. Lignocellulosic biomass is deemed an indispensable carbon source for meeting industrial and social demands regarding energy/fuels and chemicals. Over the past decade, significant advances have been shown in developing a broad spectrum of high-value chemicals and functional materials derived from biomass-based substrates. In connection with this, furanic chemicals, such as 5-hydroxymethylfurfural (HMF) and furfural, have recently received considerable attention due to their potential...
Fischer-Tropsch Synthesis, Catalysts, and Catalysis
This book is based on a symposium held during the 248th American Chemical Society meeting that focused on use of the Fischer-Tropsch process in producing synthetic fuels. Its contents reflect the four dominant subjects of the meeting: catalyst preparation and activation, catalyst activity and reaction mechanisms, catalyst characterization and related reactions, and topics concerning commercializing the Fischer-Tropsch process. It covers recent developments related to renewable resources and green energy and provides a glimpse of the commercial potential of the Fischer-Tropsch process in synthetic fuel production.
Commonwealth Universities Yearbook
A directory to the universities of the Commonwealth and the handbook of their association.
