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Irene Gonzalez-Valls Dechan Angmo Suren A. Gevorgyan Juan Sebastián Reparaz Frederik C. Krebs Monica Lira-Cantu 《Journal of Polymer Science.Polymer Physics》2013,51(4):272-280
Vertically aligned ZnO nanorods (NR) are prepared by two different syntheses methods and applied on polymer solar cells (PSCs). The ZnO electrodes work as the electron transport layer with the P3HT:PCBM blend acting as the active material. Several organic blend solution conditions are optimized: concentration, solvent, and deposition speed. The effect of different NR electrode morphologies is analyzed on the solar cell performance and characterized by current–voltage curves and IPCE analyses. The photovoltaic performance of the solar cells was observed to be influenced by many factors, among them infiltration of the organic P3HT:PCBM blend within the ZnO NR layer. The infiltration of the active layer was monitored by cross section SEM and energy dispersive X-ray spectroscopy analyses. Our results show that higher power conversion efficiencies are achieved when shorter NRs lengths are applied. The best power conversion efficiency obtained was 2.0% for a 400 nm ZnO NR electrode. © 2012 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys, 2013 相似文献
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5, 10, 15, 20-tetrakis-(4-chlorophenyl) porphyrin, H2TTPCl4, has been isolated as a new polymorph following the modified Adler’s method and its X-ray crystal structure solved. The new polymorph (I) crystallises in the monoclinic space group, P21/n with a?=?10.1574(5) Å, b?=?8.9827(4) Å, c?=?20.9350(8) Å, β?=?102.532(4)°, V?=?1864.62(15) Å3, Z?=?2. The previously found polymorph, prepared using Lindsay method was crystallised in monoclinic space group, P21/a with a?=?15.776 (13) Å, b?=?8.646 (3) Å, c?=?14.087 (5) Å, β?=?96.05 (5)°, V?=?1910.7 (3) Å3, Z?=?2. The main difference between the two polymorphs seems to be the different packing arrangement of molecules in their crystal lattices. The dramatic self aggregation property of new polymorph (I) has also been investigated. The investigation reveals that under certain conditions of solute concentration and pH of the media, the compound exhibits a strong tendency to exist in a prominent self aggregated state in head-to-tail type (j-aggregation) molecular alignment. The self association behaviour of (I) was confirmed by UV-Vis absorption spectra, performed in chloroform by varying concentrations and pH changes and 1H NMR spectra, performed in deuterated chloroform at varying concentrations and their results have been discussed in detail. 相似文献
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Crystallography Reports - The crystal and molecular structure of a new polymorph of four-coordinated Zn(II) tetraphenylporphyrin, with formula ZnTPP (TPP = 5,10,15,20-tetraphenyl porphyrin) has... 相似文献
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Ashby Wedell M. Dechan R. Engel J. Ville G. Lunge Berthelot Ch. Blarez A. Joly O. N. Witt R. von Höslin E. Jacobsen Rowland Williams Watson Smith P. Julius Menschutkin E. Léger G. Vulpius Ludwig Storch B. Fischer O. Philipp Theodor Lehmann Julius Petri M. C. Traub C. Hock G. Burkhard E. Bosetti Robert T. Thomson Harry Napier Draper C. Draper J. H. Long Carpenter F. Stolba und Eugen Dietrich 《Fresenius' Journal of Analytical Chemistry》1888,27(1):36-61
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M. Dechan 《Fresenius' Journal of Analytical Chemistry》1889,28(1):705-707
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