Toward Low-Cost, High-Efficiency, and Scalable Organic Solar Cells with Transparent Metal Electrode and Improved Domain Morphology

被引:62
作者
Kang, Myung-Gyu [1 ]
Park, Hui Joon [1 ,3 ]
Ahn, Se Hyun [1 ,2 ]
Xu, Ting [1 ]
Guo, L. Jay [1 ]
机构
[1] Univ Michigan, Dept Elect Engn & Comp Sci, Solid State Elect Lab, Ann Arbor, MI 48109 USA
[2] Univ Michigan, Dept Mech Engn, Ann Arbor, MI 48109 USA
[3] Univ Michigan, Ctr Macromol Sci & Engn, Ann Arbor, MI 48109 USA
基金
美国国家科学基金会;
关键词
Bulk heterojunction (BHJ); nanoimprint lithography (NIL); organic solar cell (OSC); roll-to-roll (R2R); surface plasmons (SPs); transparent and conductive electrode (TCE); INDIUM-TIN-OXIDE; POLYMER PHOTOVOLTAIC CELLS; ROLL-TO-ROLL; NANOIMPRINT LITHOGRAPHY; SELF-ORGANIZATION; EXCITON DIFFUSION; PHASE-SEPARATION; LIGHT; DEVICE; FILMS;
D O I
10.1109/JSTQE.2010.2044634
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
We review our recent progress toward realizing future low-cost, high-efficiency, and scalable organic solar cells (OSCs). First, we show that the transparent electrodes based on metallic nanostructure is a strong candidate as a replacement of conventional indium tin oxide (ITO) electrode due to their superior properties, such as high optical transparency, good electrical conductivity, and mechanical flexibility, and the versatility that these properties can be adjusted independently by changing the linewidth and thickness of the metal grid structure. Furthermore, we exploited the unique optical properties due to the excitation of surface plasmon resonance by the metallic nanogratings to enhance the light absorption of organic semiconductors, and demonstrated enhanced power conversion efficiency than devices made using ITO electrode. In addition, we also investigated a new device fabrication process with a focus on the photoactive layer formation, which produces the most optimum bulk-heterojunction morphology compared with conventional annealing-based methods. Finally, we successfully demonstrated that these approaches are scalable to large-area and high-speed roll-to-roll processes. We believe that the works highlighted in this paper represent one step forward to realizing low-cost, high-efficiency, and large-area OSCs.
引用
收藏
页码:1807 / 1820
页数:14
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