CAJ | 학술논문

为了拓宽染料电池对太阳光谱的响应范围,提高光电转化效率,从天然植物美人蕉中提取了天然花青素染料,作为染料电池的共敏化剂。测试了花青素乙醇溶液的紫外-可见光谱,利用循环伏安法研究了它的氧化还原行为,并测试了其与 N719共同敏化后的染料敏化太阳能电池的光学性能。结果表明：美人蕉花青素符合光敏染料的电子注入驱动力的要求；与 N719的最优共敏化条件是花青素敏化60 min,N719敏化24 h。共敏化后电池光电压为0.8 V,短路电流密度为5.97 mA/cm2,填充因子 F为0.55。光电转换效率为2.65%,比 N719单独敏化提高了61%。说明美人蕉的花青素染料作为共敏化剂使用,能够拓展对太阳光谱的吸收范围,并且有助于提高染料电池性能。
위료탁관염료전지대태양광보적향응범위,제고광전전화효솔,종천연식물미인초중제취료천연화청소염료,작위염료전지적공민화제。측시료화청소을순용액적자외-가견광보,이용순배복안법연구료타적양화환원행위,병측시료기여 N719공동민화후적염료민화태양능전지적광학성능。결과표명：미인초화청소부합광민염료적전자주입구동력적요구；여 N719적최우공민화조건시화청소민화60 min,N719민화24 h。공민화후전지광전압위0.8 V,단로전류밀도위5.97 mA/cm2,전충인자 F위0.55。광전전환효솔위2.65%,비 N719단독민화제고료61%。설명미인초적화청소염료작위공민화제사용,능구탁전대태양광보적흡수범위,병차유조우제고염료전지성능。
In order to enlarge the response to sunlight spectrum and increase the conversion efficiency of photo to electricity,the natural anthocyanin dye was extracted from natural plant canna and was used as co-sensitizing agent of dye-sensitised solar cells.The UV-visible spectra of anthocyanin alcohol solution were tested,and its redox behavior was studied by cyclic voltammetry method.The optic per-formance of the cell after using co-sensitized dyestuff of N7 1 9 and anthocyanin was determined.The results indicate that canna anthocyanin fits the requirements of the driving force for electrons;the opti-mum condition of co-sensitizing is that the sensitization time for canna anthocyanin is 60minutes,and for N719 is 24 hours.After cosensitation,the photovoltage of the cell is 0.8 V,and its short circuit current is 5.971mA/cm2 .The fill factor F is 0.55.The photoelectricity conversion efficiency is 2. 65%,which is 61% higher than single N719.This experiment shows that canna anthocyanin can be used as a co-sensitizing agent to enlarge the absorbance to sunlight spectrum and improve the perform-ance of dye-sensitised solar cell.