Effect of Deposition Potential on Synthesis, Structural,Morphological and Photoconductivity Response of Cu2O Thin Films by Electrodeposition Technique

The present work describes the effect of deposition potentials on structural,morphological,optical,electrical and photoconductivity responses of cuprous oxide(Cu2O)thin films deposited on fluorine-doped tin oxide glass substrate by employing electrodeposition technique.X-ray diffraction patterns reveal that the deposited films have a cubic structure grown along the preferential(111)growth orientation and crystallinity of the film deposited at.0.4 V is improved compared to the films deposited at.0.2,.0.3 and.0.5 V.Scanning electron microscopy displays that surface morphology of Cu2O film has a well-defined three-sided pyramid-shaped grains which are uniformly distributed over the surface of the substrates and are significantly changed as a function of deposition potential.Raman and photoluminescence spectra manifest that the film deposited at.0.4 V has a good crystal quality with higher acceptor concentration compared to other films.UV–visible analysis illustrates that the absorption of Cu2O thin film deposited at.0.4 V is notably higher compared to other films and the band gap of Cu2O thin films decreases from 2.1 to 2.04 eV with an increase in deposition potential from.0.2 to.0.5 V.The frequency–temperature dependence of impedance analysis shows that the film deposited at.0.4 V has a high conductivity.I– V measurements elucidate that the film deposited at.0.4 V exhibits a good photoconductivity response compared to films deposited in other deposition potentials.

Alterations in sucrose metabolizing enzyme activities and total phenol content of Curcuma longa L. as affected by different triazole compounds

Changes in the sucrose metabolism of Cur-cuma longa L.plants were studied under treatment with different triazole compounds viz.,triadimefon(TDM)and propiconazole(PCZ).Plants were treated with TDM at 15mg/L and PCZ at 10mg/L separately by soil drenching on 80,110,and 140 days after planting(DAP).The plants were harvested randomly on 90,120,and 150DAP to determine the effect of both the triazoles on sucrose metabolizing enzymes and phenol content.The sucrose metabolism was studied by analyzing sucrose metaboliz-ing enzymes like sucrose synthase and sucrose phosphate synthase.All the analyses were assayed in leaves and tubers of both control and treated plants.It was found that both of the triazole compounds had profound effects on these parameters.