Poly(o-phenylenediamine)/MWNTs composite film as a hole conductor in solid-state dye-sensitized solar cells |
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Authors: | Xiu-Hua Zhang Shi-Min Wang Zu-Xun Xu Jie Wu Lin Xin |
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Institution: | aMinistry-of-Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Hubei University, Wuhan 430062, People's Republic of China |
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Abstract: | All solid-state dye-sensitized solar cells were fabricated using in situ electrochemically polymerized poly(o-phenylenediamine)/MWNTs (PoPD/MWNTs) as a hole transport materiel. The electrochemical behaviors of PoPD/MWNTs indicated that the electron exchange efficiency improves obviously of PoPD after the addition of carbon nanotubes. The PoPD/MWNTs composite film was deposited on the dye anchored porous TiO2 electrode and I–V characterization was performed under simulated AM 1.5 illumination. Fabricated devices for the PoPD/MWNT composites prepared in 0.1 g/L MWNTs showed a photoresponse with an open-circuit voltage VOC of 479 mV and a short-circuit current density (ISC) of 0.572 mA/cm2 with the overall conversion efficiency of 0.13%, higher than those of the cell with only PoPD (i.e., ISC = 0.275 mA/cm2, VOC = 462 mV, FF = 0.35, η = 0.04%). It is obvious that the introduction of MWNTs to PoPD composites could improve the cell performance. |
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Keywords: | Dye-sensitized solar cells Poly(o-phenylenediamine)/MWNTs Composite film Electrochemical polymerization |
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