A5030898392- Conducting polymers and applications
- Organic Electronics and Photovoltaics
- Analytical Chemistry and Sensors
- Electrochemical Analysis and Applications
- Fullerene Chemistry and Applications
- Molecular Junctions and Nanostructures
- Electrochemical sensors and biosensors
- Perovskite Materials and Applications
- Organic Light-Emitting Diodes Research
- CO2 Reduction Techniques and Catalysts
- Graphene research and applications
- Photochemistry and Electron Transfer Studies
- Porphyrin and Phthalocyanine Chemistry
- Advanced Sensor and Energy Harvesting Materials
- Synthesis and properties of polymers
- Carbon dioxide utilization in catalysis
- Electrocatalysts for Energy Conversion
- Nanowire Synthesis and Applications
- Ionic liquids properties and applications
- Fuel Cells and Related Materials
- Semiconductor materials and interfaces
- Quantum Dots Synthesis And Properties
- Luminescence and Fluorescent Materials
- Carbon Nanotubes in Composites
- Thin-Film Transistor Technologies
Johannes Kepler University of Linz
2012-2023
Deutsche Bahn (Germany)
2013
Federal Network Agency
2013
Universidad Autónoma de Madrid
2003-2006
Friedrich-Alexander-Universität Erlangen-Nürnberg
2006
Institute for Macromolecular Studies
2006
Sabancı Üniversitesi
2005
University of California, Los Angeles
2005
Politecnico di Milano
2003
Chalmers University of Technology
2001
The morphological stabilization of donor–acceptor blends for bulk heterojunction solar cells can be achieved by cross-linking the small molecular phase in polymer matrix using a polymerizable fullerene derivative. In comparative study morphology polymer–fullerene blend films was investigated poly(3-hexylthiophene) (P3HT) as and C61-butyric acid methyl ester (PCBM) or newly synthesized derivative, glycidol ester, PCBG, acceptor molecule, respectively. Changes nanomorphology due to heat...
Mixtures of conjugated polymers and fullerenes command considerable attention for application in organic solar cells. To increase their efficiency, the design new materials that absorb at longer wavelengths is substantial interest. We have prepared such low band gap using donor−acceptor route, which based on concept interaction between alternating donors acceptors results a compressed gap. Furthermore, photovoltaic devices, sufficient polymer solubility required. four polymers, with...
The photophysical properties of a new dyad molecule composed covalently linked Zn-phthalocyanine (antenna/donor) and C60 derivative (acceptor) have been investigated. We report experimental evidence long-lived charge separation in the solid state with lifetime several orders magnitude higher than solution. Such long lifetime, unusual for phthalocyanine–fullerene dyads, is basis possible photovoltaic applications. A first demonstration working solar cell using dyads as active material...
A soluble low band gap polymer was synthesized and blended with a fullerene derivative for the fabrication of plastic solar cells. The devices showed remarkable harvest photons, within wide range 300−900 nm, that were converted into current.
Fourier transform infrared (FTIR) spectroscopic studies are carried out on different, potentiometric well defined oxidation states of polyaniline in aqueous acidic and organic electrolytes. During the process ring structures from benzenoid into quinoid states. The fully reduced state shows differences anion contents 400 mV vs saturated calomel electrode (SCE) oxidized has maximum number intercalated anions media accordance with supporting titration experiments. This conducting form similar...
A benzotriazole and 3-hexylthiophene (3HT) bearing a donor−acceptor−donor (D-A-D) type conjugated polymer (PHTBT) was synthesized. The is both p n-dopable, fluorescent, soluble in common organic solvents, processable. Electrochemical spectroelectrochemical characterization of PHTBT its photovoltaic performance bulk heterojunction (BHJ) solar cells (SC) have been measured. Using as donor material BHJ resulted increased open circuit voltage (Voc) up to 0.85 V.
In this work, we focus on the formation of different kinds charge carriers such as polarons and bipolarons upon p-type doping (oxidation) organic semiconductor poly(3- hexylthiophene-2,5-diyl) (P3HT). We elucidate cyclic voltammogram during oxidation polymer present spectroscopic changes in UV/Vis/near-IR range well mid-IR range. low-oxidation regime, two absorption bands related to sub-gap transitions appear, one UV/Vis another The gradually decreases further while shifts lower energy....
Abstract We present results for direct bio‐electrocatalytic reduction of CO 2 to C 1 products using electrodes with immobilized enzymes. Enzymatic reactions are well known from biological systems where is selectively reduced formate, formaldehyde, or methanol at room temperature and ambient pressure. In the past, use such enzymatic reductions was limited due necessity a sacrificial co‐enzyme, as nicotinamide adenine dinucleotide (NADH), supply electrons hydrogen equivalent. The method...
Z. Ping, B. Gerhard E. Nauer, H. Neugebauer, J. Theiner and A. Neckel, Chem. Soc., Faraday Trans., 1997, 93, 121 DOI: 10.1039/A604620G
We report negative capacitance at low frequencies in organic semiconductor based diodes and show that it appears only under bipolar injection conditions. account quantitatively for this phenomenon by the recombination current due to electron-hole annihilation. Simple addition of well established model space charge limited presence traps, yields excellent fits experimentally measured admittance data. The dependence extracted characteristic time on bias voltage is indicative a process which...
The synthesis of a novel bithiophene with pendant fullerene substituent and its electrochemical polymerisation are reported; light induced ESR measurements on the electrodeposited films reveal photoinduced electron transfer from donor cable (polythiophene) to acceptor (fullerene moieties).