Photonic crystals for improving light absorption in organic solar cells

被引：30
作者：
Duche, D. [1 ]
Masclaux, C. [2 ]
Le Rouzo, J. [1 ]
Gourgon, C. [2 ]
机构：
[1] Univ Toulon & Var, Aix Marseille Univ, CNRS, IM2NP,UMR 7334, F-13397 Marseille, France
[2] Univ Grenoble Alpes, CNRS, LTM, F-38054 Grenoble, France
来源：
JOURNAL OF APPLIED PHYSICS | 2015年 / 117卷 / 05期
关键词：
LITHOGRAPHY; ENHANCEMENT; POLYMERS;
D O I：
10.1063/1.4906848
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We theoretically and experimentally study the structuration of organic solar cells in the shape of photonic crystal slabs. By taking advantage of the optical properties of photonic crystals slabs, we show the possibility to couple Bloch modes with very low group velocities in the active layer of the cells. These Bloch modes, also called slow Bloch modes (SBMs), allow increasing the lifetime of photons within the active layer. Finally, we present experimental demonstration performed by using nanoimprint to directly pattern the standard poly-3-hexylthiophene:[6,6]-phenyl-C61-butiryc acid methyl ester organic semiconductor blend in thin film form in the shape of a photonic crystal able to couple SBMs. In agreement with the model, optical characterizations will demonstrate significant photonic absorption gains. (C) 2015 AIP Publishing LLC.
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页数：8
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