Highly effective Fe-doped TiOnanoparticles for removal of toxic organic dyes under visible light illumination.

This article addresses the synthesis of Fedoped TiOnanoparticles with variations of molar concentrations of Feand their adequate use as potential photocatalysts for Photocatalysis applications. Synthesized photocatalysts were characterized thoroughly by different analytical techniques in terms of morphological, chemical, structural, crystalline, optical, electronic structure, surface area etc properties. The occurrence of red shift phenomenon of the energy band gap attributes to the transfer of charges and transition between the d electrons of dopant and conduction band (CB) or valence band (VB) of TiO.

Synergistic influence of FRET, bulk recombination centers, and charge separation in enhancing the visible-light-driven photocatalytic activity of Cu-ion-doped ZnO nanoflowers.

Pure ZnO and a group of Cu-ion-doped (4, 6, and 8 wt%) ZnO nanomaterials are synthesized using the co-precipitation technique. X-ray diffraction and Fourier transform infrared spectroscopy confirm both the substitution of Zn ions by Cu ions in the ZnO lattice and formation of the ZnO/CuO composite. The divalent oxidation state of Cu is confirmed using X-ray photoelectron spectroscopy.

Insights into the impact of photophysical processes and defect state evolution on the emission properties of surface-modified ZnO nanoplates for application in photocatalysis and hybrid LEDs.

The effects of surface modification on the defect state densities, optical properties, and photocatalytic and quantum efficiencies of zinc oxide (ZnO) nanoplates were studied in this work. The aim of this study is to identify the photophysical processes that dictate the quenching of emission from defect states upon surface modification and the role of different defects such as zinc interstitials (Zn) or oxygen vacancies (V) beside the photophysical processes in determining the photocatalytic efficiency of plate-like ZnO nanostructures. For controlling the intrinsic defect state densities of ZnO nanoplates, which is difficult to achieve, their surface was modified using different polymers such as PMMA and PVA.

Excitonic enhancement of colour emission and Förster resonance energy transfer in chemically synthesized Mn-doped ZnS nanomaterials.

This study has been carried out to understand the mechanism of charge carrier dynamics and the existence of exciton-dopant energy transfer within Mn-doped ZnS nanomaterials. Improvement in the energy transfer efficiency and electroluminescence properties of these nanomaterials has been investigated for using them as an emissive layer of LEDs. A chemical co-precipitation method has been used to synthesize ZnS with varying Mn contents to achieve enhanced luminescence properties demonstrating the effect of Mn doping on excitonic luminescence intensity.

Influence of polaron doping and concentration dependent FRET on luminescence of PAni-PMMA blends for application in PLEDs.

The role of quantum mechanical phenomena such as polaron-exciton quenching interaction and concentration-dependent FRET in determining the luminescence efficiency of PAni-PMMA polymer blends has been investigated. PAni samples prepared in different environments using different acids and bases show different absorbance and emission profiles indicating a direct relation between generated polarons in PAni by acid-base doping-dedoping and photoluminescence spectra of PAni. The observed low luminescence in PAni has been modeled using exciton quenching by polarons through charge transfer.