Comparison of various sol-gel derived metal oxide layers for inverted organic solar cells
Comparison of various sol-gel derived metal oxide layers for inverted organic solar cells
复制标题
DOI：
10.1016/j.solmat.2011.03.023
复制
发表时间：
2011-08-01
影响因子：
6.9
通讯作者：
Brabec, Christoph J.
中科院分区：
文献类型：
--
作者：
Oh, Hyunchul;Krantz, Johannes;Brabec, Christoph J.
倒置体异质结太阳能电池由于其环境稳定性以及与大规模生产的兼容性而最近引起了高度关注。这已经通过可溶液加工的n型半导体（主要是TiO（2）和ZnO）的发展而实现。然而，器件性能与界面材料的电子性质密切相关，并且在这里具体地与它们的功函数、表面状态以及导电性和迁移率密切相关。值得注意的是，这些性质主要由金属氧化物的结晶度和化学计量决定。在这项研究中，我们研究了铝掺杂氧化锌（AZO）作为电荷选择性提取层的倒置BHJ太阳能电池。薄膜AZO薄膜的结构，光学和电学性能进行了表征。将具有AZO电子提取层（EEL）的有机太阳能电池的性能与本征ZnO或TiO（x）EEL的性能进行比较。我们测定了所有这些不同金属氧化物的透射率、吸收率、电导率和光学带隙。此外，我们还建立了AZO的掺杂量与器件性能之间的关系，以及AZO的退火温度与器件性能之间的关系。(C)2011 Elsevier B.V.保留所有权利。
Inverted bulk-heterojunction solar cells have recently captured high interest due to their environmental stability as well as compatibility to mass production. This has been enabled by the development of solution processable n-type semiconductors, mainly TiO(2) and ZnO. However, the device performance is strongly correlated to the electronic properties of the interfacial materials, and here specifically to their work function, surface states as well as conductivity and mobility. It is noteworthy to say that these properties are massively determined by the crystallinity and stoichiometry of the metal oxides. In this study, we investigated aluminum-doped zinc oxide (AZO) as charge selective extraction layer for inverted BHJ solar cells. Thin AZO films were characterized with respect to their structural, optical and electrical properties. The performance of organic solar cells with an AZO electron extraction layer (EEL) is compared to the performance of intrinsic ZnO or TiO(x) EELs. We determined the transmittance, absorbance, conductivity and optical band gap of all these different metal oxides. Furthermore, we also built the correlations between doping level of AZO and device performance, and between annealing temperature of AZO and device performance. (C) 2011 Elsevier B.V. All rights reserved.