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Showing 1 to 9 of 9 for “"Donor-acceptor systems"”.
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Describing Charge Transfer in Extended Donor-Acceptor Systems with Density Functional Theory
… In particular, the theoretical description of donor-acceptor (DA) systems is plagued by this shortcoming. DA systems are frequently used as light absorbing components in organic photovoltaic devices. The lowest electronic excitation in these molecules is usually influenced by CT. In order to …
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Benzimidazole-Based Fluorophores and Noncovalent Organic Frameworks
… showed separate frontier molecular orbitals in donor–acceptor systems, similar to benzobisoxazole cruciforms. They display change in their fluorescent emission upon exposure to bases, acids and small anions. The preparation of other benzimidazole-based sensor precursors and initial study is also …
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Thermally Activated Delayed Fluorescence Emitters: Molecular Design, Photophysics, and Sensing Application
… chemical sensing. In this thesis, coumarin-based donor-acceptor systems are investigated as a versatile platform for the development of TADF-active emitters and their integration into functional sensing materials. Following an overview of the photophysical principles governing fluorescence, …
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Nanocarbons as charge carriers in organic solar cells
… of OPV: low bandgap polymers, new electron acceptors, processing additives, and tandem cell architecture. Nanocarbons possess unique physical and chemical properties that can contribute to the enhancement of OPV performance, such as charge carrier mobility, thermal conductivity, mechanical …
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Photoelectrochemical and photophysical studies of carbon nanotube and molybdenum disulfide based light harvesting devices
… nanolayers for their light-harvesting ability in donor-acceptor systems. These materials were studied with three specific goals: (i) introducing innovative light-harvesting designs, (ii) understanding their fundamental photophysical and photoelectrochemical properties, and (iii) providing …
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Design and synthesis of new processable materials for application in organic devices.
… block for its features as excellent electron-acceptor unit in compounds with low bandgap. Six small molecules, based on DPP unit endcapped with triazolo group were synthetized and functionalized with solubilizing peripheral chains that allowed the dispersion in nonorganic and toxic solvents. …
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Redox-Active Trivalent Metallosurfactants With Low Global Symmetry For Molecule-Based Electronics: Spectroscopic, Electrochemical, And Amphiphilic Properties Of New Molecular Materials For Current-Voltage Measurements In M|lb-Monolayer|m Devices
… for molecule-based electronics. Asymmetric donor-acceptor type [D-A] molecules are promising candidates to study the current rectification behavior. In order to address this phenomenon, a series of ligands with phenolate moieties and, their gallium(III), iron(III), and manganese(III) …
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Donor-Acceptor Block Copolymers in Organic Electronics - Spectroscopy, Charge Transport, Morphology and Device Application
… work deals with the characterisation of novel donor-acceptor block copolymers and their constituent polymer blocks that are well-suited for organic photovoltaics. Block copolymers phase-separate and self-assemble into nanostructured morphologies due to the covalent linkage of the two blocks. …
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Effects of Thickness, Morphology and Molecular Structure of Donor and Acceptor Layers in Thermally Interdiffused Polymer Photovoltaics
… the creation of a concentration gradient of the donor and acceptor materials throughout the active layer of the device. Concentration gradients are expected to improve device performance by optimizing the charge transfer, transport and collection processes. This is achieved through heat-induced …