【摘要】 通过掺杂吸收光谱在可见光波段的量子点可提高聚合物对可见光的吸收,因此掺杂CdSe/ZnS核-壳结构量子点(CQDs)能提高聚(3-己基噻吩):[6,6]-苯基-C61-丁酸甲酯(P3HT:PCBM)体异质结太阳电池的能量转换效率.本文研究了CdSe/ZnS量子点在P3HT:PCBM中的不同掺杂比例及其表面配体对太阳电池光伏性能的影响,优化器件ITO(氧化铟锡)/PEDOT:PSS(聚(3,4-乙撑二氧噻吩:聚苯乙烯磺酸)/P3HT:PCBM:(CdSe/ZnS)/Al的能量转换效率达到了3.99%,与相同条件下没有掺杂量子点的参考器件ITO/PEDOT:PSS/P3HT:PCBM/Al相比,其能量转换效率提高了45.1%.更多还原

【Abstract】 The efficiency of bulk heterojunction solar cells was enhanced by incorporating CdSe/ZnS core- shell colloidal quantum dots(CQDs) into copolymers of poly(3- hexylthiophene(P3HT) and [6,6]-phenyl-C61-butyric acid methyl ester(PCBM) as the active layer,as result of the increased absorption in the visible region.The doping of CdSe/ZnS CQDs in the active layer and the influence of CQD surface ligands on device performance were investigated.A maximum power conversion efficiency(PCE) of 3.99% was obtained from the optimized solar cell ITO/PEDOT:PSS/P3HT:PCBM:(CdSe/ZnS)/Al(ITO:indium-tin oxide;PEDOT:poly(3,4-ethylendioxythiophene;PSS:poly(styrenesulfonate)) under AM1.5 illumination.This was45.1% improvement on the PCE of the control device ITO/PEDOT:PSS/P3HT:PCBM/Al.更多还原