Beyond Photovoltaics: Semiconductor Nanoarchitectures for Liquid-Junction Solar Cells
Radiation Laboratory and Department of Chemistry & Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States. Chemical Reviews
(Impact Factor: 46.57).
10/2010; 110(11):6664-88. DOI: 10.1021/cr100243p
Liquid-junction photoelectrochemical solar cells make use of the principles of photochemistry, electrochemistry, and semiconductor physical chemistry. The recent technological advances in the commercialization of dye sensitized solar cells have provided a further boost to the development of photoelectrochemical solar cells. One-dimensional architectures such as nanotubes and nanorods hold the promise of improving charge collection and transport with greater efficiency. While quantum dot sensitized solar cells lag behind dye sensitized solar cells in terms of overall power conversion efficiency, many salient features offer opportunities for improvement. Efforts are being made toward developing economically viable solar cells and solar fuel generation schemes. A hybrid technology which integrates solar cells and energy storage devices can pave the way for meeting ever-growing demand for clean, renewable energy.
Available from: Vanna Sanna
- "On this respect, graphene-based polymer composites are very attractive materials that can be used for packaging for food, medicine, electronics , energy storage , electrically conductive polymers , making transparent conductive electrode for solar cells , and electrochromic devices . Also photovoltaics based on fullerene C60 derivatives is one of the most attractive research areas in polymer science due to the advantages offered by these molecules for solar energy conversion      . However, fullerene C60 has some drawbacks because of its poor solubility in organic solvents  and its main absorption in the UV region. "
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ABSTRACT: Defect-free graphene is easily obtained by the liquid dispersion method, without any chemical manipulation. Tetraethylene glycol diacrylate (TEGDA) is used as liquid medium in which the above nanofiller is dispersed alone or together with fullerene C60. TEGDA is used because of its good dispersion properties and as a monomer to be eventually polymerized, thus directly obtaining the corresponding polymer nanocomposites. Polymerization is performed by using both the classical or the frontal polymerization, Moreover, polymeric films were also prepared. The interaction between the two fillers and the influence of the synthetic techniques on material properties are deeply studied. The optical properties of the obtained nanocomposites are analyzed by absorption and fluorescence spectroscopy. Graphene containing materials show absorption at ca. 280 nm and exhibited significant emission in the range between 600-800 nm. In contrast, fullerene containing materials do not show any fluorescence, which can be attributed to a charge transfer phenomenon from graphene to fullerene C60.
Composites Science and Technology 02/2015; 110. DOI:10.1016/j.compscitech.2015.02.011 · 3.57 Impact Factor
Available from: Oleksandr L. Stroyuk
- "Rapid progress in the area of dye-sensitized solar cells (DSSCs) based on wide-band-gap oxide semiconductors and liquid electrolytes containing redox-mediators of electron transfer     inspired studies of alternative types of photoelectrochemical systems aiming at the conversion and storage of solar energy, in particular the all-inorganic semiconductor-sensitized solar cells (SSSCs), where visible-light-sensitive metal chalcogenide semiconductor nanoparticles (NPs) act as sensitizers, cadmium and lead chalcogenide being the most widely used [2,3,5–7]. "
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ABSTRACT: The photocatalytic deposition of antimony(III) sulfide on the surface of TiO2 films on the conductive FTO glass was investigated. The photoprocess yields particles of amorphous and almost stoichiometric Sb2S3 with a size of 150–300 nm and spherical micrometer particles enriched with Sb with a Sb:S ratio that decreases gradually from 13:1 in the particle center to 5:1 at the surface. Thermal treatment of the FTO/TiO2/Sb2S3 films at 350 °C results in the transformation of amorphous antimony(III) sulfide into crystalline stibnite without extensive changes in the film morphology.
Journal of Photochemistry and Photobiology A Chemistry 02/2015; 303. DOI:10.1016/j.jphotochem.2015.02.005 · 2.50 Impact Factor
Available from: downloads.hindawi.com
- "Among these alternatives, solar-to-electric energy conversion systems have always been a fascinating and challenging frontier for science and application   . Quantum dot sensitized solar cells (QDSCs) are gaining attention as they show promise toward the development of next generation solar cells     . The design of QDSCs which is similar to that of dye sensitized solar cell (QDSC) includes deposition of narrow bandgap semiconductor nanocrystal such as CdSe on mesoscopic TiO 2 films . "
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ABSTRACT: We use the successive ionic layer adsorption and reaction (SILAR) method for the preparation of quantum dot sensitized solar cells, to improve the performance of solar cells by doping quantum dots. We tested the UV-Vis absorption spectrum of undoped CdS QDSCs and Cu doped CdS QDSCs with different doping ratios. The doping ratios of copper were 1 : 100, 1 : 500, and 1 : 1000, respectively. The experimental results show that, under the same SILAR cycle number, Cu doped CdS quantum dot sensitized solar cells have higher open circuit voltage, short circuit current density photoelectric conversion efficiency than undoped CdS quantum dots sensitized solar cells. Refinement of Cu doping ratio are 1 : 10, 1 : 100, 1 : 200, 1 : 500, and 1 : 1000. When the proportion of Cu and CdS is 1 : 10, all the parameters of the QDSCs reach the minimum value, and, with the decrease of the proportion, the short circuit current density, open circuit voltage, and the photoelectric conversion efficiency are all increased. When proportion is 1 : 500, all parameters reach the maximum values. While with further reduction of the doping ratio of Cu, the parameters of QDSCs have a decline tendency. The results showed that, in a certain range, the lower the doping ratio of Cu, the better the performance of quantum dot sensitized solar cell.
Journal of Nanomaterials 01/2015; 2015:1-4. DOI:10.1155/2015/498950 · 1.64 Impact Factor
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