Highly transparent tetraaminophthalocyanine polymer films for DSSC cathodes
Highly transparent tetraaminophthalocyanine polymer films for DSSC cathodes
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DOI：
10.1039/c7ta10167h
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发表时间：
2018-02-14
影响因子：
11.9
通讯作者：
Henry, Charles S.
中科院分区：
文献类型：
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作者：
Klunder, Kevin J.;Elliott, C. Michael;Henry, Charles S.
一种廉价、透明、催化和高度稳定的材料是染料敏化太阳能电池（DSSC）阴极的圣杯。尽管在DSSC阴极上的研究工作几乎呈指数增长，但接近这种理想的材料尚未被发现。透明阴极允许太阳能电池的正面和背面照明，使替代阳极材料和电池设计成为可能，并且对DSSCs的基础研究和商业化都很重要。在这项工作中，测试了四氨基眼青碱镍（NiTAPc）薄膜作为Co（Bipy）介导的DSSCs的催化阴极材料。薄膜具有高透明度，在550 nm处的透射率（T550）超过95%，同时R-ct值保持在1.3 ω cm以下(2)。所制备的NiTAPc薄膜价格低廉，制备速度快，易于制备，并且在2000个循环伏安循环下稳定。长期的膜稳定性没有实现，R-ct随时间（天）而上升。然而，聚nitapc仍然是迄今为止报道的最透明和催化的材料之一。虽然历史上酞菁（Pc）一直被研究为染料/敏化剂，但这篇关于酞菁用作正极材料的第一篇报道表明它们在DSSC两侧都有用途。
An inexpensive, transparent, catalytic, and highly stable material is the holy grail for a dye sensitized solar cell (DSSC) cathode. Despite a near exponential increase in research effort on DSSC cathodes, materials approaching this ideal have yet to be found. Transparent cathodes allow for front and back illumination of the solar cell, enable alternative anode materials and cell designs, and are important both for fundamental research and commercialization of DSSCs. In this work, thin polymeric films of nickel tetraminophthalocyanine (NiTAPc) were tested as a catalytic cathode material in Co(Bipy)-mediated DSSCs. The thin films are highly transparent with a transmittance at 550 nm (T550) of over 95% while maintaining an R-ct value below 1.3 Omega cm(2). The NiTAPc films are inexpensive, fast and easy to generate, and stable to 2000 cyclic voltammetry cycles. Long-term film stability was not realized, and a rise in the R-ct over time (days) occurred. However, poly-NiTAPc still represents one of the most transparent and catalytic materials reported to date. While historically phthalocyanines (Pc) have been studied as a dye/sensitizer, this first report of phthalocyanine use as a cathode material demonstrates they have utility on both sides of the DSSC.