期刊
DYES AND PIGMENTS
卷 91, 期 3, 页码 404-412出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.dyepig.2011.05.017
关键词
Multi-alkylthienyl porphyrins; Thiophene derivatives; Red-shifted; Power conversion efficiency; Dye-sensitized solar cells; Photovoltaic performance
资金
- National Natural Science Foundation of China [50973092, 51003089]
- Specialized Research Fund for the Doctoral Program of Higher Education of China [20094301120005, 20104301110003]
- Natural Science Foundation of Hunan Province of China [09JJ3020, 09JJ4005]
Four porphyrin dyes, incorporating multi-alkylthienyl appended porphyrins as the electron donor, the 2-cyanoacrylic acid as the electron acceptor, and different pi-conjugated spacer, have been synthesized for dye-sensitized solar cells (DSSCs). All the porphyrin dyes studied in this work exhibit red-shifted and broadened electronic spectra respect to the reference P-Zn as expected. By the introduction of thienyl groups at the meso-positions, the energy level of E-ox (excited-state oxidation potentials) is significantly shifted to the positive compared with the reference P-Zn, indicating a decreased HOMO-LUMO gap. The highest power conversion efficiency of the four dyes based on DSSCs reached 5.71% under AM 1.5 G irradiation. (C) 2011 Elsevier Ltd. All rights reserved.
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