期刊
SOLAR ENERGY
卷 86, 期 5, 页码 1563-1575出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.solener.2012.02.018
关键词
Dye-sensitized solar cells; Natural dyes; Anthocyanins; Betalains; Solar energy; Titanium oxide
资金
- CNR
- PRIN [2008ALLB79]
- Ministero dell'Ambiente del Territorio e della Tutela del Mare
- Dyecells project [121]
We present the photoelectrochemical properties of dye-sensitized solar cells using natural pigments containing betalains and anthocyanins as sensitizers. The dyes extracted from grape, mulberry, blackberry, red Sicilian orange, Sicilian prickly pear, eggplant and radic-chio have shown a monochromatic incident photon to current efficiency (IPCE) ranging from 40% to 69%. Short circuit photocurrent densities (J(sc)) up to 8.8 mA/cm(2), and open circuit voltage (V-oc) ranging from 316 to 419 mV, were obtained from these natural dyes under 100 mW/cm(2) (AM 1.5) simulated sunlight. The best solar conversion efficiency of 2.06% was achieved with Sicilian prickly pear fruits extract. The influence of pH and co-absorbers on natural sensitizers, were investigated and discussed. (C) 2012 Elsevier Ltd. All rights reserved.
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