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- W3014968688 abstract "Abstract Herein, an improved light harvesting organic–inorganic nanocomposite material was obtained by coupling a judiciously developed green-orange absorbing bichromophoric organic salt [R6 G][HFl] and UV-blue absorbing TiO2 QDs. The designed bichromophoric salt is synthesized using a biphasic metathesis reaction and the nanocomposite [R6 G][HFl]-TiO2 is then obtained by single phase overnight stirring of the two components in an optimized ratio. The synthesized nanocomposite results in further broadening of absorption spectrum ranging from UV to NIR with the peak approximately matching the solar irradiation spectrum and demonstrate enhanced absorptivity thereby capable of harvesting the major part of the solar emission. The nanocomposite demonstrates a perfect molecular as well as HOMO-LUMO and valence band–conduction band alignment which enables energy transfer from TiO2 to [R6 G][HFl] and charge transfer between duo as evident from steady state and transient photoluminescence studies. White light irradiation of the nanocomposite film exhibits 450 times higher photocurrent than that of the bare TiO2 film. The slow photocurrent decay time of 46 s confirms that a generous amount of photo generated carriers harvest in the composite sample. This unique nanocomposite structure demonstrating spectral broadening along with charge transfer result in extraordinarily improved photocurrent and photoresponse thereby rendering [R6 G][HFl]-TiO2 nanocomposite an excellent potential active material for a solid state TiO2 based Heterojunction Solar Cell (HJSC). Efficiency of this nanocomposite based HJSC was found to be the highest (4.4 %) among the various other layer by layer structured devices thereby presenting a simplified cell fabrication technique by excluding the necessity of usual layer by layer dye deposition on TiO2 followed by their optimization for best efficiency. Thus, this study presents a thoughtfully designed device ready perfect active material for a TiO2 based HJSC exhibiting good competence." @default.
- W3014968688 created "2020-04-10" @default.
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- W3014968688 date "2020-07-01" @default.
- W3014968688 modified "2023-10-16" @default.
- W3014968688 title "A BICHROMOPHORIC ORGANIC-INORGANIC SEMICONDUCTOR NANOCOMPOSITE: DEVICE READY BROAD SPECTRAL RESPONSE LIGHT-HARVESTING MATERIAL WITH ENHANCED PHOTORESPONSE" @default.
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- W3014968688 doi "https://doi.org/10.1016/j.colsurfa.2020.124707" @default.
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