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Efficiency Enhancement of Dye-Sensitized Solar Cells Based on Gracilaria/Ulva Using Graphene Quantum Dot
International Journal of Environmental Research ( IF 3.2 ) Pub Date : 2020-06-04 , DOI: 10.1007/s41742-020-00265-2
Afsoon Saedi , Ali Mashinchian Moradi , Salimeh Kimiagar , Homayon Ahmad Panahi

Dye-sensitized solar cells (DSSC) have been assembled using natural dyes extracted from the red (Gracilaria) and green (Ulva) algae as photosensitizers and the effect of adding Graphene quantum dot (GQD) has been investigated. The open-circuit voltage ( V OC ) values of natural dyes of Gracilaria, Gracilaria + GQD, Ulva, and Ulva + GQD are 0.64, 0.73, 0.70, and 0.75, respectively. The short circuit current density ( J SC ) values are varied from 0.96 to 2.26 mA cm −2 , and the fill factor (FF) from 52 to 56% for the mentioned samples. The best-energy conversion efficiency of approximately 0.94% has been achieved for DSSC with Gracilaria + GQD with J SC equal 2.26 mA cm −2 , V OC is 0.73 V, and FF is 56%. Dye-sensitized solar cells were assembled using red (Gracilaria) and green (Ulva) algae. The results showed that adding the Graphene quantum dot to dye as a sensitizer increased significantly the efficiency. The best energy conversion efficiency of approximately 0.94% was achieved. To the best of our knowledge, there is no report for this kind of solar cell.

中文翻译:

使用石墨烯量子点提高基于江蓠/石莼的染料敏化太阳能电池的效率

染料敏化太阳能电池 (DSSC) 已使用从红色 (Gracilaria) 和绿色 (Ulva) 藻类中提取的天然染料作为光敏剂组装而成,并研究了添加石墨烯量子点 (GQD) 的效果。江蓠、江蓠+GQD、石莼、石莼+GQD的天然染料的开路电压(V OC )值分别为0.64、0.73、0.70和0.75。对于上述样品,短路电流密度 (J SC ) 值从 0.96 到 2.26 mA cm -2 变化,填充因子 (FF) 从 52% 到 56%。使用江蓠+GQD 的DSSC 实现了大约0.94% 的最佳能量转换效率,其中J SC 等于2.26 mA cm -2 ,V OC 为0.73 V,FF 为56%。染料敏化太阳能电池使用红色(江蓠)和绿色(石莼)藻类组装而成。结果表明,在染料中加入石墨烯量子点作为敏化剂显着提高了效率。实现了大约 0.94% 的最佳能量转换效率。据我们所知,目前还没有关于这种太阳能电池的报道。
更新日期:2020-06-04
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