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作 者:王鹏[1] 郭闰达[1] 陈宇[1] 岳守振[1] 赵毅[1] 刘式墉[1]
机构地区:[1]吉林大学电子科学与工程学院,集成光电子学国家重点实验室,长春130012
出 处:《物理学报》2013年第8期531-536,共6页Acta Physica Sinica
基 金:国家重点基础研究发展计划(批准号:2010CB327701);国家自然科学基金(批准号:60977024)资助的课题~~
摘 要:基于传统的体异质结有机太阳能电池结构,对结构中的混合层改用梯度掺杂的方法,在AM1.5,100mW/cm2光照下,使得器件的短路电流由原来的7.72mA/cm2提高到了9.18mA/cm2,相应的光电转换效率提高了25%.器件性能的提升归因于梯度掺杂体系的引入使得体异质结混合层中同一材料分子之间形成了较好的连续网络结构,降低了器件的串联电阻,提高了电极对载流子的收集效率,从而提高了器件的光电转换效率.On the basis of the traditional bulk heterojunction structure, we introduce a method of gradient doping in the mixing layer to improve photoelectric conversion efficiency (rip) of organic photovoltaic device (OPV). One of the devices with the structure of ITO/CuPc (10 nm)/CuPc : C60 (2 : 1) (4 nm)/CuPc : C60 (1.5 : 1) (4 nm)/CuPc : C60 (1 : 1) (4 nm)/CuPc : C60 (1 : 1.5) (4 nm)/CuPc : C60 (1 : 2) (4 nm)/C60 (30 nm)/Bphen (8 nm)/A1 (100 nm) show the improvement on performance: short-circuit current Jsc = 9.18 mA/cm&2, photoelectric conversion efficiency rip = 1.35% under AM1.5 solar illumination. Compared with rip of the traditional bulk heterojuncfion OPV ITO/CuPc(10 nm)/CuPc : C60 (1 : 1) (20 nm)/C60(30 nm)/Bphen(8 nm)/Al(100 nm), the r/p of the present structure is improved by 25%, which is attributed to the improvement on percolating paths of donor and acceptor molecules across the entire mixing layer, thus increasing the charge collection efficiency. Consequently, the overall device series resistance is reduced and the photoelectric conversion efficiency is enhanced.
分 类 号:TM914.4[电气工程—电力电子与电力传动]
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