CAJ | 학술논문

等效电路分析和实验结果证实,染料敏化太阳电池的光生电流显著地影响着电池电压-电流曲线中的短路电流.首先根据等效电路分析,得出了染料敏化太阳电池的光生电池值,以及理论上光生电流对短路电流的影响.进一步的电池制备和效率测试,证明了上述的理论计算论断.最后,根据光生电流与短路电流的关系,本文提出了通过提高光生电流来提高短路电流,最终提高染料敏化太阳电池效率的思路,并按照上述思路得到了电池效率提升20%的试验结果.
등효전로분석화실험결과증실,염료민화태양전지적광생전류현저지영향착전지전압-전류곡선중적단로전류.수선근거등효전로분석,득출료염료민화태양전지적광생전지치,이급이론상광생전류대단로전류적영향.진일보적전지제비화효솔측시,증명료상술적이론계산론단.최후,근거광생전류여단로전류적관계,본문제출료통과제고광생전류래제고단로전류,최종제고염료민화태양전지효솔적사로,병안조상술사로득도료전지효솔제승20%적시험결과.
It is found from the equivalent circuit analysis and the experiment results that, the change of photo current (Iph) significant-ly influences the short-circuit current (Isc) of the I-V curve. Firstly, the Iph value of the dye sensitized solar cells (DSSCs) is derived,and the influence to Isc is analyzed theoretically by the equivalent circuit mode. Further experiment on the laboratory-made dye sensi-tized solar cell confirms well with the theoretical results. In the end, the possible way to improve the efficiency of the DSSCs based on the relation of Iphwith Isc is suggested. The measured I-V eurves of cells, which have the enhanced Iph, showed significantly increased values of Isc, while no obvious change was observed in FF, Voc and the shape of I-V curve. From the measured I-V curves of cells, the analysis about Iph to the I-V curve was confirmed. The detail values of Iph,Iscand η showed the efficiencies of cells were enhanced 20% by the increment of Iph