Grating-Coupled Surface Plasmon Enhanced Short-Circuit Current in Organic Thin-Film Photovoltaic Cells

被引：79
作者：
Baba, Akira [1 ]
Aoki, Nobutaka [2 ]
Shinbo, Kazunari [1 ,2 ]
Kato, Keizo [1 ,2 ]
Kaneko, Futao [1 ,2 ]
机构：
[1] Niigata Univ, Ctr Transdisciplinary Res, Nishi Ku, Niigata 9502181, Japan
[2] Niigata Univ, Grad Sch Sci & Technol, Nishi Ku, Niigata 9502181, Japan
来源：
ACS APPLIED MATERIALS & INTERFACES | 2011年 / 3卷 / 06期
基金：
日本科学技术振兴机构; 日本学术振兴会;
关键词：
surface plasmon; grating structure; organic thin-film photovoltaic cell; short-circuit current; FDTD simulation; SOLAR-CELLS; ABSORPTION;
D O I：
10.1021/am200304x
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
In this study, we demonstrate the fabrication of grating-coupled surface plasmon resonance (SPR) enhanced organic thin-film photovoltaic cells and their improved photocurrent properties. The cell consists of a grating substrate/silver/P3HT:PCBM/PEDOT:PSS structure. Blu-ray disk recordable substrates are used as the diffraction grating substrates on which silver films are deposited by vacuum evaporation. P3HT:PCBM films are spin-coated on silver/grating substrates. Low conductivity PEDOT:PSS/PDADMAC layer-by-layer ultrathin films deposited on P3HT:PCBM films act as the hole transport layer, whereas high conductivity PEDOT:PSS films deposited by spin-coating act as the anode. SPR excitations are observed in the fabricated cells upon irradiation with white light. Up to a 2-fold increase in the short-circuit photocurrent is observed when the surface plasmon (SP) is excited on the silver gratings as compared to that without SP excitation. The finite-difference time-domain simulation indicates that the electric field in the P3HT: PCBM layer can be increased using the grating-coupled SP technique.
引用
收藏
页码：2080 / 2084
页数：5
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