A Large-Area Light-Weight Dye-Sensitized Solar Cell based on All Titanium Substrates with an Efficiency of 6.69% Outdoors
A Large-Area Light-Weight Dye-Sensitized Solar Cell based on All Titanium Substrates with an Efficiency of 6.69% Outdoors
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A%20大面积%20轻量%20染料敏化%20太阳能%20cell%20based%20on%20all%20钛%20基板%20with%20an%20效率%20of%206.69%%20户外
DOI：
10.1002/adma.201200003
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发表时间：
2012-04-10
影响因子：
29.4
通讯作者：
Sato, Tsugio
中科院分区：
文献类型：
--
作者：
Wu, Jihuai;Xiao, Yaoming;Sato, Tsugio
在过去的几十年里，染料敏化太阳能电池因其效率高、制作工艺简单、成本低而成为一种很有前途的可再生能源。[1-4]在实验室中已经实现了光电转换效率为12%的染料敏化太阳能电池。[3，4]为了满足实际应用的需求，人们致力于大面积轻量化的太阳能电池。导电基板是轻质数字信号处理系统中的重要组成部分。[4-6]导电玻璃作为基板的刚性受到限制，塑料基板不能耐高温处理，阻碍了其在轻质数字信号处理系统中的发展。金属具有良好的柔韧性、低阻、高温烧结性、低成本等特点，可以作为轻量化的直接序列存储器件的衬底材料。在被测试的金属中，如不锈钢、[7，8]银、[9]铜、[10]钛、[11，12]等，[4，13]钛作为衬底引起了人们的极大关注，因为作为衬底的钛具有比掺氟氧化锡(FTO)衬底更高的导电性，并且对用作DSSCs电解液的碘具有优异的耐蚀性。用生长在钛网上的二氧化钛纳米管阵列为阳极，铂/钛片为对电极，获得了5.3%的效率(100mW cm−2)。使用钛丝和钛片作为阳极和对电极的衬底，获得了5.6%的效率(100 mW cm−2)。[12]然而，钛衬底的低透明度必须得到改善，才能用于新的器件。这里，基于全钛衬底设计了一种背面照明、重量轻、面积大的直接序列扫描器(图1)。通过在钛网上电化学沉积聚(3，4-乙二氧基噻吩基)铂/钛(PEDOT-铂/钛)膜，制备了聚(3，4-乙二氧基噻吩基)铂/钛(PEDOT-铂/钛)薄膜，并用作对电极。通过在钛表面涂覆二氧化钛，制备了二氧化钛/钛(TiO2/Ti)薄膜
Dye-sensitized solar cells (DSSCs) have attracted significant attention in the past decades as a promising renewable energy source because of their high efficiency, simple fabrication process, and low cost.[1–4] A DSSC with a light-to-electric conversion efficiency of 12% has been achieved in the lab.[3, 4] To meet the demand for practical applications, many efforts have been devoted to large-area light-weight DSSCs. A conductive substrate is an important component in light-weight DSSCs.[4–6] Conductive glass as a substrate is limited because of its rigidity, and plastic substrates can not stand treatment at high temperature, which hampers their development in light-weight DSSCs. Metals have good flexibility, low resistance, high temperature sinterability, low cost, and can be used as substrates in light-weight DSSCs. Among the tested metals, such as stainless steel,[7, 8] silver,[9] copper,[10] titanium,[11, 12] etc.,[4, 13] Ti as a substrate has aroused great attention, because Ti as a substrate has a high conductivity compared with a FTO (fluorine-doped tin oxide over-layer) substrate and superior corrosion resistance to iodine which is used as an electrolyte in DSSCs.[11–14] Wang et al. used a TiO 2 nanotubular array grown on a Ti mesh as an anode, and a Pt/Ti sheet as a counter electrode, and obtained an efficiency of 5.3%(100 mW cm− 2).[11] Liu et al. used a Ti wire and sheet as the substrates of the anode and counter electrode, and obtained an efficiency of 5.6%(100 mW cm− 2).[12] However, the low transparency of the Ti substrate has to be improved for use in novel devices.Here, a backside illuminated, light-weight and largearea DSSC is devised based on all-Ti substrates (Figure 1). A poly (3, 4-ethylenedioxythiophene)–platinum/titanium (PEDOT–Pt/Ti) film is prepared by electrochemically depositing PEDOT and Pt on Ti mesh and used as a counter electrode. A titania/titanium (TiO 2/Ti) film is prepared by coating TiO 2 onto a Ti