State Key Laboratory of Fine Chemicals, DUT-KTH Joint Education and Research Centre on Molecular Devices, Dalian University of Technology (DUT), 2 Linggong Rd., 116024 Dalian, China.
Phys Chem Chem Phys. 2013 Sep 28;15(36):15146-52. doi: 10.1039/c3cp51980e.
In the present study, tetramethylammonium hydroquinone (HQ)/benzoquinone (BQ) were developed for use as a redox couple, with poly(3,4-ethylenedioxythiophene) (PEDOT) and multiwalled carbon nanotubes (MWNT) being proposed for use as counter electrode (CE) catalysts in dye-sensitized solar cells (DSSCs). Both metal-complex N719 and metal-free organic dye CM309 were employed to fabricate devices. For the devices sensitized by N719, when using PEDOT and MWNT CEs, power conversion efficiencies (PCE) of 5.2 and 4.9% were obtained, respectively, which were much higher than that of the device using the traditional Pt CE (4.7%) when HQ/BQ electrolyte was employed. However, with the HQ/BQ redox shuttle, the efficiency of the devices sensitized by N719 is much lower than that of the devices when the traditional I(-)/I3(-) based electrolyte and Pt CE were employed (7.9%). While for the CM309 sensitized solar cells, when the HQ/BQ redox shuttle was employed, PEDOT and MWNT performed much better than Pt, the DSSC using the PEDOT CE showed an efficiency of 6.2%, which was close to that of the DSSC using the traditional I(-)/I3(-) electrolyte and Pt CE (6.3%).
在本研究中，四甲基氢醌（HQ）/对苯二醌（BQ）被开发用作氧化还原对，而聚（3,4-亚乙基二氧噻吩）（PEDOT）和多壁碳纳米管（MWNT）被提议用作染料敏化太阳能电池（DSSC）的对电极（CE）催化剂。金属配合物 N719 和金属免费有机染料 CM309 都被用于制造器件。对于由 N719 敏化的器件，当使用 PEDOT 和 MWNT CE 时，分别获得了 5.2%和 4.9%的功率转换效率（PCE），这明显高于使用 HQ/BQ 电解质时使用传统 Pt CE（4.7%）的器件。然而，当使用 HQ/BQ 氧化还原穿梭时，由 N719 敏化的器件的效率远低于使用传统 I(-)/I3(-)基电解质和 Pt CE 的器件的效率（7.9%）。然而，对于 CM309 敏化太阳能电池，当使用 HQ/BQ 氧化还原穿梭时，PEDOT 和 MWNT 的性能明显优于 Pt，使用 PEDOT CE 的 DSSC 表现出 6.2%的效率，接近使用传统 I(-)/I3(-)电解质和 Pt CE 的 DSSC（6.3%）。
