Polyfluorene Thin Films Synthesized by a Novel Plasma Polymerization Method

2012-02-01
GÖKTAŞ, HİLAL
Mansuroğlu, Doğan
ATALAY, BETÜL
Bilikmen, Sinan
KAYA, İSMET
The synthesis of polyfluorene (PF) thin films by simultaneously superposing a continuous and pulsed discharge and the characterizations of these samples are presented. The double discharge plasma system is constructed by superposing two discharges; namely, a low pressure dc glow one and a high current pulsed one. The fluorene monomer in powder form was vaporized in the system at argon plasma without any modification, at 0.5 mbar operating pressure. The structure of the thin films was investigated via XPS, UV-visible, FTIR, XRD and SEM. The FTIR and the UV-visible results revealed that the fluorene structure was retained at the produced samples. Semi-conducting behavior was established, and upon the iodine doping, the optical energy band gap (E-g) dropped down from 3.7 to 2.4 eV. The morphology of the synthesized PF thin films was amorphous, with granular structures of different sizes depending on the location of the substrate.
PLASMA CHEMISTRY AND PLASMA PROCESSING

Suggestions

Micro processing by intense fast electron beam
Goktas, H; Kirkici, H; Oke, G; Udrea, M (2001-06-22)
Generation of intense electron beams by superposing two discharges, namely a low pressure do glow discharge and a high current pulsed discharge at pressures and voltages very similar to that of the pseudo-spark gap devices, has been reported previously [1, 2]. The small diameter, high peak current and short pulse length are the characteristics of the electron beam generated using this technique. In this technique, no high vacuum facilities are necessary, and many applications such as micro processing, X-ray...
Magnetite: From Synthesis to Applications
Unsoy, Gozde; Gündüz, Ufuk; Oprea, Ovidiu; Ficai, Denisa; Sonmez, Maria; Radulescu, Marius; Alexie, Mihaela; Ficai, Anton (2015-01-01)
In this review the synthesis, functionalization and some applications of magnetite nanoparticles (MNPs) were highlighted. It is our intention to highlight the correlations between the synthesis routes, related synthesis parameters, functionalization strategies and the properties expected for the materials containing MNPs. The uses of MNPs are strongly influenced by the properties of the materials. Therefore this review is trying to discuss the applications of the magnetite and magnetite based nanomaterials ...
Polyhedral oligomeric silsesquioxanes appended conjugated soluble polymers based on thieno[3,4-c]pyrrole-4,6,dione acceptor unit
Çakal, Deniz; Önal, Ahmet Muhtar (2021-05-01)
A series of new donor-acceptor-donor type fluorescent molecules incorporating thieno[3,4-c]pyrrole-4,6-dione (TPD) as the acceptor unit were synthesized. TPD acceptor unit was modified with polyhedral oligomeric silsesquioxanes (POSS) cages and integrated with thiophene and alkylenedioxythiophene derivatives (3,4-ethylenedioxythiophene (EDOT) and 3,4-propylenedioxythiophene (ProDOT)) using Stille coupling reaction. The monomers, T-2-POSS, E-2-POSS, and P-2-POSS, were polymerized successfully via electrochem...
Numerical investigation of a dc glow discharge in an argon gas: two-component plasma model
Kemaneci, Efe Hasan; Rafatov, İsmail; Department of Physics (2009)
This thesis deals with a one and two dimensional numerical modeling of a low-pressure DC glow discharge in argon gas. We develop two-component fluid model which uses the diffusion-drift theory for the gas discharge plasma and consists of continuity equations for electrons and ions, as well as Poisson equation for electric field. Numerical method is based on the control volume technique. Calculations are carried out in MATLAB environment. Computed results are compared with the classic theory of glow discharg...
Fe-, Ni- and Co-induced crystallization of ge thin films fabricated on different substrates for photovoltaic applications
Kabaçelik, İsmail; Kulakcı, Mustafa; Turan, Raşit (null; 2018-07-06)
Metal-induced (Fe-, Ni- and Co-) crystallization of amorphous germanium (a-Ge) thin films were investigated by depositing Ge on c-Si (100) and glass substrates by means of electron beam evaporation. The samples were exposed to post-annealing temperatures of 300, 400 and 500 o C for 1 hour (h). The crystal structure of the Ge films was characterized with a Raman spectrum and X-ray diffraction (XRD) measurements. The Raman spectrum of the samples as-deposited and annealed at a temperature of 300 °C gives broa...
Citation Formats
H. GÖKTAŞ, D. Mansuroğlu, B. ATALAY, S. Bilikmen, and İ. KAYA, “Polyfluorene Thin Films Synthesized by a Novel Plasma Polymerization Method,” PLASMA CHEMISTRY AND PLASMA PROCESSING, pp. 35–44, 2012, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/62976.