Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9812843 | Thin Solid Films | 2005 | 7 Pages |
Abstract
Conjugated polymers are among the most promising organic materials for optoelectronic devices. In such applications, the main fabrication challenge is to get uniform, defect-free and reproducible thin films of these materials. In this research, a series of novel plasma-polymerized 4-cyanopyridine (PPCPD) thin films of desired thickness were prepared through plasma polymerization under different glow discharge conditions. They were transparent, pinhole-free and uniform. The effect of the discharge power on the chemical structure and surface compositions of the plasma-polymerized 4-cyanopyridine (PPCPD) films was investigated by Fourier transform infrared (FTIR), UV-visible absorption spectroscopy (UV-vis), X-ray photoelectron spectroscopy (XPS) and the deposition rate measurements. A high retention of the aromatic ring structure of the starting monomer in the deposited plasma films is obtained when a low discharge power of 3 to 10 W was used during film formation. A red shift in the maximum absorption wavelength (λmax) for all the plasma-deposited films was observed as compared with the monomer absorption spectrum. The atomic force microscopy (AFM) measurement shows that the PPCPD film with quite smooth surface could be grown under a relatively low discharge power.
Related Topics
Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
Xiao Hu, Xiongyan Zhao, A. Uddin, C.B. Lee,