Side chain engineering of poly-thiophene and its impact on crystalline silicon based hybrid solar cells

被引：4

作者：

Zellmeier, M. ^{[1
]}

Rappich, J. ^{[1
]}

Klaus, M. ^{[2
]}

Genzel, Ch. ^{[2
]}

Janietz, S. ^{[3
]}

Frisch, J. ^{[4
]}

Koch, N. ^{[4
]}

Nickel, N. H. ^{[1
]}

机构：

[1] Inst Silicon Photovolta, Helmholtz Zentrum Berlin Mat & Energie GmbH, D-12489 Berlin, Germany

[2] Helmholtz Zentrum Berlin Mat & Energie GmbH, Dept Microstruct & Residual Stress Anal, D-12489 Berlin, Germany

[3] Fraunhofer Inst Appl Polymer Res, Dept Polymer Elect, D-14476 Potsdam, Germany

[4] Humboldt Univ, D-12489 Berlin, Germany

来源：

APPLIED PHYSICS LETTERS | 2015年 / 107卷 / 20期

关键词：

FIELD-EFFECT MOBILITY; MOLECULAR-WEIGHT; POLY(3-HEXYLTHIOPHENE); POLY(3-ALKYLTHIOPHENES); THERMOCHROMISM; LAYERS; STATE;

D O I：

10.1063/1.4935751

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The influence of ether groups in the side chain of spin coated regioregular polythiophene derivatives on the polymer layer formation and the hybrid solar cell properties was investigated using electrical, optical, and X-ray diffraction experiments. The polymer layers are of high crystallinity but the polymer with 3 ether groups in the side chain (P3TOT) did not show any vibrational fine structure in the UV-Vis spectrum. The presence of ether groups in the side chains leads to better adhesion resulting in thinner and more homogeneous polymer layers. This, in turn, enhances the electronic properties of the planar c-Si/poly-thiophene hybrid solar cell. We find that the power conversion efficiency increases with the number of ether groups in the side chains, and a maximum power conversion efficiency of eta = 9.6% is achieved even in simple planar structures. (c) 2015 AIP Publishing LLC.

引用

页数：4

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