Light harvesting improvement of organic solar cells with self-enhanced active layer designs

被引:25
作者
Chen, Luzhou [1 ]
Sha, Wei E. I. [1 ]
Choy, Wallace C. H. [1 ]
机构
[1] Univ Hong Kong, Dept Elect & Elect Engn, Hong Kong, Hong Kong, Peoples R China
来源
OPTICS EXPRESS | 2012年 / 20卷 / 07期
关键词
ABSORPTION;
D O I
10.1364/OE.20.008175
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We present designs of organic solar cells (OSCs) incorporating periodically arranged gradient type active layer. The designs can enhance light harvesting with patterned organic materials themselves (i.e. self-enhanced active layer design) to avoid degrading electrical performances of OSCs in contrast to introducing inorganic concentrators into OSC active layers such as silicon and metallic nanostructures. Geometry of the OSC is fully optimized by rigorously solving Maxwell's equations with fast and efficient scattering matrix method. Optical absorption is accessed by a volume integral of the active layer excluding the metallic absorption. Our numerical results show that the OSC with a self-enhanced active layer, compared with the conventional planar active layer configuration, has broadband and wide-angle range absorption enhancement due to better geometric impedance matching and prolonged optical path. This work provides a theoretical foundation and engineering reference for high performance OSC designs. (C) 2012 Optical Society of America
引用
收藏
页码:8175 / 8185
页数:11
相关论文
共 32 条
[1]  
[Anonymous], PHOTONIC CRYSTALS MO
[2]   Improving thin-film crystalline silicon solar cell efficiencies with photonic crystals [J].
Bermel, Peter ;
Luo, Chiyan ;
Zeng, Lirong ;
Kimerling, Lionel C. ;
Joannopoulos, John D. .
OPTICS EXPRESS, 2007, 15 (25) :16986-17000
[3]   Nano-crystalline silicon solar cell architecture with absorption at the classical 4n2 limit [J].
Biswas, Rana ;
Xu, Chun .
OPTICS EXPRESS, 2011, 19 (14) :A664-A672
[4]   Enhancing light harvesting in organic solar cells with pyramidal rear reflectors [J].
Cao, Weiran ;
Myers, Jason D. ;
Zheng, Ying ;
Hammond, William T. ;
Wrzesniewski, Edward ;
Xue, Jiangeng .
APPLIED PHYSICS LETTERS, 2011, 99 (02)
[5]   Comprehensive analysis and optimal design of top-emitting organic light-emitting devices [J].
Chen, Xue-Wen ;
Choy, Wallace C. H. ;
He, Sailing ;
Chui, P. C. .
JOURNAL OF APPLIED PHYSICS, 2007, 101 (11)
[6]   Nanoimprinted semiconducting polymer films with 50 nm features and their application to organic heterojunction solar cells [J].
Cheyns, D. ;
Vasseur, K. ;
Rolin, C. ;
Genoe, J. ;
Poortmans, J. ;
Heremans, P. .
NANOTECHNOLOGY, 2008, 19 (42)
[7]   High-efficiency photonic crystal solar cell architecture [J].
Chutinan, Alongkarn ;
Kherani, Nazir P. ;
Zukotynski, Stefan .
OPTICS EXPRESS, 2009, 17 (11) :8871-8878
[8]   Slow Bloch modes for enhancing the absorption of light in thin films for photovoltaic cells [J].
Duche, David ;
Escoubas, Ludovic ;
Simon, Jean-Jacques ;
Torchio, Philippe ;
Vervisch, Wilfried ;
Flory, Francois .
APPLIED PHYSICS LETTERS, 2008, 92 (19)
[9]   Optical and electrical properties of efficiency enhanced polymer solar cells with Au nanoparticles in a PEDOT-PSS layer [J].
Fung, Dixon D. S. ;
Qiao, Linfang ;
Choy, Wallace C. H. ;
Wang, Chuandao ;
Sha, Wei E. I. ;
Xie, Fengxian ;
He, Sailing .
JOURNAL OF MATERIALS CHEMISTRY, 2011, 21 (41) :16349-16356
[10]   INSITU CONTROL OF GA(AL)AS MBE LAYERS BY PYROMETRIC INTERFEROMETRY [J].
GROTHE, H ;
BOEBEL, FG .
JOURNAL OF CRYSTAL GROWTH, 1993, 127 (1-4) :1010-1013