Defect-Induced Loss Mechanisms in Polymer-Inorganic Planar Heterojunction Solar Cells

被引：53
作者：
Hartel, Michael [1 ]
Chen, Song [1 ]
Swerdlow, Benjamin [1 ]
Hsu, Hsien-Yi [2 ]
Manders, Jesse [1 ]
Schanze, Kirk [2 ]
So, Franky [1 ]
机构：
[1] Univ Florida, Dept Mat Sci & Engn, Gainesville, FL 32611 USA
[2] Univ Florida, Dept Chem, Gainesville, FL 32611 USA
来源：
ACS APPLIED MATERIALS & INTERFACES | 2013年 / 5卷 / 15期
关键词：
organic solar cell; ZnO nanoparticles; PCDTBT; defects; transient photovoltage; PL lifetime; OPTICAL-PROPERTIES; ZINC-OXIDE; ZNO; PHOTOLUMINESCENCE; NANOPARTICLES; ARRAYS;
D O I：
10.1021/am4015605
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The effect of ZnO defects on photoexcited charge carrier recombination and forward induced charge transfer was studied in organic-inorganic bilayer organic heterojunction solar cells. Decreased bimolecular recombination via passivation of ZnO nanopariticle defects resulted in longer carrier lifetime as determined by transient photovoltage (TPV) measurements. It was also found by time-resolved photoluminescence (TRPL) measurements that defect passivation decreased the fluorescence lifetime which indicated higher exciton dissociation efficiency. Through passivation of the ZnO nanoparticles defects, the two loss mechanisms were reduced and the power conversion efficiency (PCE) is significantly enhanced.
引用
收藏
页码：7215 / 7218
页数：4
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