Chlorophylls and xanthophylls of crop plants as dyes for Dye-Sensitized Solar Cells (DSSC)
Chlorophylls and xanthophylls of crop plants as dyes for Dye-Sensitized Solar Cells (DSSC)
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农作物的叶绿素和叶黄素作为染料敏化太阳能电池 (DSSC) 的染料
DOI：
10.29328/journal.jpsp.1001011
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
C. Forni
中科院分区：
文献类型：
--
作者：
M. Rossi;F. Matteocci;A. Carlo;C. Forni
天然染料因其成本低、易得、原料来源丰富、环境友好等优点，已成为昂贵稀有有机增感剂的可行替代品。叶绿素是最丰富的色素，可以用简单而廉价的方法从植物叶片中提取，但由于缺乏OH和COOH基团，很难用作染料敏化太阳能电池（DSSC）敏化剂。相反的情况是真实的叶黄素，一类特殊的类胡萝卜素，含有游离羟基基团，因此可以被认为是潜在的DSSC敏化剂。在这项工作中，我们描述了一种新的和廉价的方法，叶绿素提取叶片的基础上使用的基本溶剂，提供了创建的COOH基团，允许叶绿素结合在二氧化钛层。与效率较低的叶黄素相比，这种改性的艾德叶绿素染料显示出更高的DSSC效率水平（0.72%）。
Natural dyes have become a viable alternative to expensive and rare organic sensitizers because of their low cost, easy attainability, abundance of supply of raw materials and environmental friendliness. Chlorophyll, the most abundant pigment, can be extracted from plant leaves with simple and inexpensive methods, but it’s diffi cult to use as a Dye-Sensitized Solar Cells (DSSC) sensitizer due to the absence of OH and COOH groups. The opposite is true for xanthophylls, a particular class of carotenoids that contain free hydroxyl groups and thus may be considered as potential DSSC sensitizers. In this work we describe a new and inexpensive method of chlorophyll extraction from leaves based on the use of a basic solvent that provides the creation of COOH groups, allowing chlorophyll binding on the TiO2 layer. This modifi ed chlorophyll dye showed a higher DSSC effi ciency level (0.72%) compared to xanthophylls, which had lower efficiency.