Bulk heterojunction solar cells with internal quantum efficiency approaching 100%
Bulk heterojunction solar cells with internal quantum efficiency approaching 100%
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DOI：
10.1038/nphoton.2009.69
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发表时间：
2009-05-01
期刊：
影响因子：
35
通讯作者：
Heeger, Alan J.
中科院分区：
文献类型：
--
作者：
Park, Sung Heum;Roy, Anshuman;Heeger, Alan J.
我们报道了使用交替共聚物，聚[N-9“-七癸基-2，7-咔唑-alt-5，5-（4 '，7'-二-2-噻吩基-2 '，1'，3 '-苯并噻二唑）（PCDTBT）与富勒烯衍生物[6，6]-苯基C-70-丁酸甲酯（PC 70 BM）的本体异质结复合材料的太阳能电池的制造和测量，具有6%的功率转换效率。PCDTBT/PC 70 BM太阳能电池表现出迄今为止所研究的任何体异质结系统的最佳性能，在100 mW cm（-2）的大气质量1.5全局（AM 1.5 G）照射下，J（SC）= 10.6 mA cm（-2），V-OC = 0.88 V，FF = 0.66和eta（e）= 6.1%。内部量子效率接近100%，这意味着基本上每个吸收的光子都导致一对分离的电荷载流子，并且所有光生载流子都被收集在电极处。
We report the fabrication and measurement of solar cells with 6% power conversion efficiency using the alternating co-polymer, poly[N-9 ''-hepta-decanyl-2,7-carbazole-alt-5,5-(4',7'-di-2-thienyl-2',1',3'-benzothiadiazole) (PCDTBT) in bulk heterojunction composites with the fullerene derivative [6,6]-phenyl C-70-butyric acid methyl ester (PC70BM). The PCDTBT/PC70BM solar cells exhibit the best performance of any bulk heterojunction system studied to date, with J(SC) = 10.6 mA cm(-2), V-OC = 0.88 V, FF = 0.66 and eta(e) = 6.1% under air mass 1.5 global (AM 1.5 G) irradiation of 100 mW cm(-2). The internal quantum efficiency is close to 100%, implying that essentially every absorbed photon results in a separated pair of charge carriers and that all photogenerated carriers are collected at the electrodes.