A stable quasi-solid-state dye-sensitized solar cell with an amphiphilic ruthenium sensitizer and polymer gel electrolyte
A stable quasi-solid-state dye-sensitized solar cell with an amphiphilic ruthenium sensitizer and polymer gel electrolyte
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DOI：
10.1038/nmat904
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发表时间：
2003-06-01
期刊：
影响因子：
41.2
通讯作者：
Grätzel, M
中科院分区：
文献类型：
--
作者：
Wang, P;Zakeeruddin, SM;Grätzel, M
染料敏化纳米晶太阳能电池（DSC）作为传统太阳能电池的一种具有成本效益的替代品受到了广泛关注。到目前为止，阻碍DSC广泛实际应用的主要因素之一是这些器件所遇到的较差的热稳定性。在此我们展示了一种在热应力和光照浸泡条件下都具有前所未有的稳定性能的DSC，符合户外应用的硅太阳能电池所适用的耐久性标准。该电池使用两亲性钌敏化剂顺式 - RuLL'(SCN)₂（L = 4,4'-二羧酸 - 2,2'-联吡啶，L' = 4,4'-二壬基 - 2,2'-联吡啶）与一种准固态聚合物凝胶电解质相结合，在全日照（空气质量1.5，100 mW/cm²）下效率达到>6%。报道了一种方便且通用的合成异配体钌配合物的新方法，它在实现高温稳定性方面起着关键作用。超微电极伏安测量表明，三碘化物/碘化物电对能够在聚合物凝胶中自由地进行电荷传输。该电池在80℃下持续加热1000小时，保持了其初始性能的94%。该器件在配备紫外线过滤器的太阳模拟器（100 mW/cm²）中于55℃光照浸泡1000小时也表现出优异的稳定性。目前的研究结果应该会促进染料敏化太阳能电池的广泛实际应用。
Dye-sensitized nanocrystalline solar cells (DSC) have received considerable attention as a cost-effective alternative to conventional solar cells. One of the main factors that has hampered widespread practical use of DSC is the poor thermostability encountered so far with these devices. Here we show a DSC with unprecedented stable performance under both thermal stress and soaking with light, matching the durability criteria applied to silicon solar cells for outdoor applications. The cell uses the amphiphilic ruthenium sensitizer cis-RuLL'(SCN)(2) (L = 4,4'-dicarboxylic acid-2,2'-bipyridine, L' = 4,4'-dinonyl-2,2'-bipyridine) in conjunction with a quasi-solid-state polymer gel electrolyte, reaching an efficiency of >6% in full sunlight (air mass 1.5, 100 mW cm(-2)). A convenient and versatile new route is reported for the synthesis of the heteroleptic ruthenium complex, which plays a key role in achieving the high-temperature stability. Ultramicroelectrode voltammetric measurements show that the triiodide/iodide couple can perform charge transport freely in the polymer gel. The cell sustained heating for 1,000 h at 80 degreesC, maintaining 94% of its initial performance. The device also showed excellent stability under light soaking at 55 degreesC for 1,000 h in a solar simulator (100 mW cm(-2)) equipped with a ultraviolet filter. The present findings should foster widespread practical application of dye-sensitized solar cells.