ZnO anchored graphene hydrophobic nanocomposite-based bulk heterojunction solar cells showing enhanced short-circuit current

Hydrophobic and surfactant-free ZnO nanoparticles and ZnO decorated graphene nanocomposite (Z@G) with narrow and uniform size distribution were synthesized by a time-efficient microwave-assisted hydrothermal reaction that can be used specifically for application in hybrid photovoltaics. The synthesized ZnO nanoparticles and Z@G nanocomposite showed stable and clear dispersion in chloroform and methanol (with volume ratio of 9 : 1) and chloroform and ethanol (volume ratio 9 : 1). Being hydrophobic, these inorganic samples blend very well with organic polymer solution in chlorobenzene, which is a prerequisite to cast smooth and undisrupted film for hybrid solar cell application. The introduction of these hydrophobic nanoparticles into PCPDTBT: PCBM-based bulk-heterojunction polymer solar cells resulted in significant improvement in solar cell J-V characteristics with enhancement in open circuit voltage (VOC), short circuit current density (JSC) and thereby overall improvement in cell efficiency. With the optimization of the weight ratio of polymer, fullerene and synthesized ZnO nanoparticles/Z@G nanocomposite, the power conversion efficiencies 1.76% and 3.65% were achieved

Spectroelectrochemical study of the influence of anions on the formation and on the behaviour of poly(N-vinylcarbazole) films

Poly(N-vinylcarbazole) (PVCz) films were prepared by potentiostatic deposition onto indium tin oxide-coated glass (ITO) electrodes from acetonitrile solutions containing the monomer. Two different supporting electrolyte solutions, LiClO4 and LiBF4, were used. The electrochemical behaviour of the polymer-coated electrodes was studied in solutions containing successively, both electrolytes, by means of in situ UV-vis spectrophotometry. The experimental results obtained in both electrolytes at the same analytical concentration could not be interpreted completely by considering only the influence of the size of the electrolyte anion. Spectroelectrochemical measurements performed in electrolyte solutions of the same conductivity have shown the importance of the specific interactions which may exist between the anions and the oxidized polymer sites.info:eu-repo/semantics/publishe

On the Kinetics of Condensation of Thiourea at the mercury-ethanolic solution interface

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Comparative study of the kinetics of two-dimensional condensation of thiourea at mercury/water and mercury/ethanol interfaces

The kinetics of condensation of thiourea have been investigated by the potential step technique at the mercury/water and mercury/ethanol interfaces in the presence of 0.5 M LiNO3. In both solvents, the formation of the condensed film B takes place via a nucleation and growth mechanism. Slower transients are, however, observed in ethanolic solutions. Kinetic parameters such as the growth rate, the nucleation rate and the line tension have been obtained from the analysis of the mononuclear and polynuclear transients.SCOPUS: re.jinfo:eu-repo/semantics/publishe

Comparison of the kinetics of 2D condensation of thiourea at the mercury-water and mercury-ethanol interface

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Electrochemical quartz crystal microbalance and spectroelectrochemical studies of the influence of cations on the formation and electroactivity of poly(N-vinylcarbazole) films in acetonitrile solutions

info:eu-repo/semantics/publishe