Probing the polymer-electrode interface using neutron reflection

被引:12
作者
Mitchell, WJ
Burn, PL
Thomas, RK
Fragneto, G
机构
[1] Univ Oxford, Dyson Perrins Lab, Oxford OX1 3QY, England
[2] Univ Oxford, Phys & Theoret Chem Lab, Oxford OX1 3QZ, England
[3] Inst Max Von Laue Paul Langevin, F-38042 Grenoble, France
关键词
D O I
10.1063/1.1567825
中图分类号
O59 [应用物理学];
学科分类号
摘要
We demonstrate that neutron reflection (NR) can be used to characterize polymer films deposited on indium tin oxide (ITO). When the chloro precursor to poly[2-(2(')-ethylhexyloxy)5-methoxy-1,4-phenylenevinylene] (MEHPPV) was spin-coated onto ITO NR revealed that between the ITO and the uniform polymer layer was a 20 Angstrom thick low contact zone. We found that the conversion of the chloro precursor to MEHPPV at 180 degreesC under vacuum gave a uniform film of MEHPPV with the layer of low contact between the polymer and ITO remaining. Finally, the NR profile suggests that the blueshift in the MEHPPV absorption spectrum on ITO when compared to quartz is due to polymer morphology and not incomplete conversion. (C) 2003 American Institute of Physics.
引用
收藏
页码:2724 / 2726
页数:3
相关论文
共 16 条
[1]  
Born M., 1986, PRINCIPLES OPTICS
[2]   D17: the new reflectometer at the ILL [J].
Cubitt, R ;
Fragneto, G .
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 2002, 74 (Suppl 1) :S329-S331
[3]  
LECHNER J, 1987, THEORY REFLECTION
[4]   Device performance and polymer morphology in polymer light emitting diodes: The control of device electrical properties and metal/polymer contact [J].
Liu, J ;
Shi, YJ ;
Ma, LP ;
Yang, Y .
JOURNAL OF APPLIED PHYSICS, 2000, 88 (02) :605-609
[5]  
Liu J, 2001, ADV FUNCT MATER, V11, P420, DOI 10.1002/1616-3028(200112)11:6<420::AID-ADFM420>3.0.CO
[6]  
2-K
[7]  
Lo SC, 2001, J MATER CHEM, V11, P2228, DOI 10.1039/b106115c
[8]   A study on the molecular weight of the chloro-precursor polymer to MEHPPV [J].
McCallien, DWJ ;
Thomas, AC ;
Burn, PL .
JOURNAL OF MATERIALS CHEMISTRY, 1999, 9 (04) :847-849
[9]   Controlling interchain interactions in conjugated polymers: The effects of chain morphology on exciton-exciton annihilation and aggregation in MEH-PPV films [J].
Nguyen, TQ ;
Martini, IB ;
Liu, J ;
Schwartz, BJ .
JOURNAL OF PHYSICAL CHEMISTRY B, 2000, 104 (02) :237-255
[10]   Conjugated polymer aggregates in solution: Control of interchain interactions [J].
Nguyen, TQ ;
Doan, V ;
Schwartz, BJ .
JOURNAL OF CHEMICAL PHYSICS, 1999, 110 (08) :4068-4078