Efficiency Enhancement of Dye-Sensitized Solar Cell Using Pt Hollow Sphere Counter Electrode

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• 作者：Van-Duong Dao ; Seong-Hoon Kim ; Ho-Suk Choi ; Jae-Ha Kim ; Han-Oh Park ; Joong-Kee Lee
• 刊名：Journal of Physical Chemistry C
• 出版年：2011
• 出版时间：December 29, 2011
• 年：2011
• 卷：115
• 期：51
• 页码：25529-25534
• 全文大小：912K
• 年卷期：v.115,no.51(December 29, 2011)
• ISSN：1932-7455

文摘

[Pt hollow spheres] electrodes and [Pt-sputtered + Pt hollow spheres] electrodes were fabricated on fluorine-doped tin oxide (FTO) glass as counter electrodes for dye-sensitized solar cells (DSCs), after sputtering platinum (Pt) on polystyrene microspheres and annealing them at 500 掳C for 30 min. Electrochemical impedance measurement revealed that the charge transfer resistances of [Pt hollow spheres] electrodes and [Pt-sputtered + Pt hollow spheres] electrodes were 0.91 惟 cm² and 0.48 惟 cm², respectively, which were less than that of 1.28 惟 cm² obtained from [Pt-sputtered] electrode. Furthermore, the DSCs with [Pt hollow spheres] and [Pt-sputtered + Pt hollow spheres] electrodes exhibited high energy-conversion efficiencies of 8.20(卤0.10)% and 8.53(卤0.08)%, respectively, which were both higher than the 7.89(卤0.05)% efficiency of the DSC with [Pt-sputtered] electrodes.