Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion

Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion

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Song S.,Tianjin University of Technology | Song S.,Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion | Ma F.,Tianjin University of Technology | Wang S.,Tianjin University | And 3 more authors.
Digest Journal of Nanomaterials and Biostructures | Year: 2017

An axially coordinated Tin (IV) Dichloride hexadecafluorophthalocyanine (SnPcCl2F16) was synthesized. The electron energy level was studied by UV-vis absorption and cyclic voltammetry mathods. The measurement results indicated that the SnPcCl2F16 compound embody suitable lowest unoccupied molecular orbital level for electron injection. Thermal analysis showed the compound has excellent thermal stability with decomposition temperature above 470oC. The SnPcCl2F16/p-6p (SnPcCl2F16 on p-sexiphenyl) organic thin film transistors (OTFTs) using SnPcCl2F16 as an active layer and p-6p as an inducing layer was fabricated by the physical vapor deposition technique. The SnPcCl2F16 semiconductor film was characterized by XRD and AFM. And the results indicated that SnPcCl2F16 molecules can be oriented after the employment of the p-6p inducing layer. Charge carrier field-effect mobility (µ) and threshold voltage (VT) of the SnPcCl2F16/p-6p OTFTs were 0.85×10-3 cm2/V s and 7.62 V, respectively. © 2017, Johns Hopkins University Press. All rights reserved.


Zhou Y.,Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion | Liu F.,Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion | Wu H.,Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion | Qu B.,Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion | Duan L.,Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion
Journal Wuhan University of Technology, Materials Science Edition | Year: 2015

4,4′-dibromo-2-nitro-biphenyl and 4,4′-dibromo-2,3′-dinitro-biphenyl have been synthesized via nitration reaction with 4,4′-dibromobiphenyl as the raw material. Three novel thiophene derivatives, 4, 4′-di(4-hexyl-thiophen-2-yl)biphenyl, 4,4′-di(4-hexyl-thiophen-2-yl)-2-nitro-biphenyl and 4,4′-di(4-hexyl-thiophen-2-yl)-2,3′-dinitrobiphenyl were synthesized through Stille coupling reaction, followed by polymerization in the presence of FeCl3, respectively. UV-vis absorption spectra, fluorescence spectra, photoluminescence spectra and electrochemical properties of the polymers were investigated. And the band-gap (Eg), HOMO orbital energy (EHOMO), and LUMO orbital energy (ELUMO) of the polymers were calculated. Among the polymers, polymer PBTN and PBTD show lower band-gap (2.67 and 2.63 eV), lower HOMO energy level (−5.38 and −5.4 eV) and broader wavelength (432 and 438 nm) than that of polymer PBTB (2.69 eV, -5.36 eV and 424 nm) with incorporation of one nitro group or two nitro groups in the main chain, respectively. © 2015, Wuhan University of Technology and Springer-Verlag Berlin Heidelberg.

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