Carbon-Nanodot Solar Cells from Renewable Precursors
Carbon-Nanodot Solar Cells from Renewable Precursors
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DOI：
10.1002/cssc.201601741
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发表时间：
2017-03-09
期刊：
影响因子：
8.4
通讯作者：
Briscoe, Joe
中科院分区：
文献类型：
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作者：
Marinovic, Adam;Kiat, Lim S.;Briscoe, Joe
最近的研究表明，废弃生物质可以转化为各种功能材料，包括具有理想光学和电子特性的材料，为这些可再生资源的新用途提供了机会。光化学是一个具有挑战性的领域，其中找到丰富，低成本和无毒的材料与必要的功能的组合可能具有挑战性。本文比较了从不同生物质来源获得的各种生物材料作为TiO（2）基纳米结构太阳能电池敏化剂的碳纳米点的性能;使用多糖（壳聚糖和甲壳素）、单糖（D-葡萄糖）、氨基酸（L-精氨酸和L-半胱氨酸）和生龙虾壳通过水热碳化制备碳纳米点。通过使用L-精氨酸碳纳米点作为敏化剂获得了最高的太阳能转换效率（PCE）0.36%，而龙虾壳作为实际食物垃圾中甲壳素的模型来源，显示出PCE为0.22%。通过比较这种广泛的材料，通过仔细研究每个碳纳米点家族的结构和光学性质，将太阳能电池的性能与材料特性相关联，并且表明胺和羧酸官能化的组合对太阳能电池性能特别有益。
It has recently been shown that waste biomass can be converted into a wide range of functional materials, including those with desirable optical and electronic properties, offering the opportunity to find new uses for these renewable resources. Photovoltaics is one area in which finding the combination of abundant, low-cost and non-toxic materials with the necessary functionality can be challenging. In this paper the performance of carbon nanodots derived from a wide range of biomaterials obtained from different biomass sources as sensitisers for TiO(2)based nanostructured solar cells was compared; polysaccharides (chitosan and chitin), monosaccharide (D-glucose), amino acids (L-arginine and L-cysteine) and raw lobster shells were used to produce carbon nanodots through hydrothermal carbonisation. The highest solar power conversion efficiency (PCE) of 0.36% was obtained by using L-arginine carbon nanodots as sensitisers, whereas lobster shells, as a model source of chitin from actual food waste, showed a PCE of 0.22 %. By comparing this wide range of materials, the performance of the solar cells was correlated with the materials characteristics by carefully investigating the structural and optical properties of each family of carbon nanodots, and it was shown that the combination of amine and carboxylic acid functionalisation is particularly beneficial for the solar-cell performance.