IMPROVING STABILITY OF CHLOROPHYLL AS NATURAL DYE FOR DYE-SENSITIZED SOLAR CELLS
IMPROVING STABILITY OF CHLOROPHYLL AS NATURAL DYE FOR DYE-SENSITIZED SOLAR CELLS
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提高叶绿素作为染料敏化太阳能电池天然染料的稳定性
DOI：
10.11113/jt.v80.10258
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
A. Setyaji
中科院分区：
文献类型：
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作者：
Z. Arifin;S. Soeparman;D. Widhiyanuriyawan;S. Suyitno;A. Setyaji
天然染料因其生产成本低、合成工艺简单、天然丰度高而受到研究者的广泛关注。然而，基于天然染料的染料敏化太阳能电池（DSSC）具有更高的降解倾向。本文报道了利用天然染料增强染料敏化太阳能电池（DSSC）的性能和稳定性。在50 ° C的温度下，用乙醇溶剂从番木瓜叶中提取天然染料。提取的染料经柱层析分离、修饰后得到镁叶绿素。然后将镁-叶绿素合成为铁-叶绿素以提高稳定性。采用紫外-可见光谱、傅里叶变换红外光谱和循环伏安法对天然染料进行了表征。使用太阳模拟器测试DSSC的性能。结果表明，所制备的番木瓜叶DSSCs的开路电压为325 mV，短路电流密度为0.36 mA/cm 2，转换效率为0.07%.此外，具有纯化叶绿素的DSSC提供425 mV的高开路电压和0.45 mA/cm 2的短路电流密度。使用铁叶绿素敏化DSSC的效率提高了2.5倍，稳定性提高了2倍。具有Fe-叶绿素染料的DSSC分别提供500 mV、0.62 mA/cm 2和0.16%的开路电压、短路电流密度和效率。需要进一步研究以提高天然染料基DSSC的电流密度和稳定性，以及改善染料和半导体层之间的锚定。
Natural dyes have attracted much researcher’s attention due to their low-cost production, simple synthesis processes and high natural abundance. However the dye-sensitized solar cells (DSSCs) based natural dyes have higher tendency to degradation. This article reports on the enhancement of performance and stability of dye-sensitized solar cells (DSSCs) using natural dyes. The natural dyes were extracted from papaya leaves by ethanol solvent at a temperature of 50 °C. Then the extracted dyes were isolated and modified into Mg-chlorophyll using column chromatography. Mg-chlorophyll was then synthesized into Fe-chlorophyll to improve stability. The natural dyes were characterized using ultraviolet-visible spectrometry, Fourier transform infrared spectroscopy, and cyclic voltammetry. The performance of DSSCs was tested using a solar simulator. The results showed the open-circuit voltage, the short-circuit current density, and the efficiency of the extracted papaya leaves-based DSSCs to be 325 mV, 0.36 mA/cm2, and 0.07%, respectively. Furthermore, the DSSCs with purified chlorophyll provide high open-circuit voltage of 425 mV and short-circuit current density of 0.45 mA/cm 2 . The use of Fe-chlorophyll for sensitizing the DSSCs increases the efficiency up to 2.5 times and the stability up to two times. The DSSCs with Fe-chlorophyll dyes provide open-circuit voltage, short-circuit current density, and efficiency of 500 mV, 0.62 mA/cm2, and 0.16%, respectively. Further studies to improve the current density and stability of natural dye-based DSSCs along with an improvement in the anchor between dyes and semiconducting layers are required.