| Alternating current characterization of nano-Pt(Ⅱ)octaethylporphyrin(PtOEP) thin film as a new organic semiconductor |
| |
| 作者姓名： | M Dongol M M El-Nahass A El-Denglawey A A Abuelwafa T Soga |
| |
| 作者单位： | 1.Nano and Thin Film Laboratory, Physics Department, Faculty of Science, South Valley University, Qena 83523, Egypt;2.Physics Department, Faculty of Education, Ain Shams University, Roxy, Cairo 11757, Egypt;3.Physics Department, Faculty of Applied Medical Science, Taif University, Turabah 21995, Kingdom of Saudi Arabia;4.Department of Frontier Materials, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan |
| |
| 摘 要： | Alternating current(AC) conductivity and dielectric properties of thermally evaporated Au/Pt OEP/Au thin films are investigated each as a function of temperature(303 K–473 K) and frequency(50 Hz–5 MHz).The frequency dependence of AC conductivity follows the Jonscher universal dynamic law.The AC-activation energies are determined at different frequencies.It is found that the correlated barrier hopping(CBH) model is the dominant conduction mechanism.The variation of the frequency exponent s with temperature is analyzed in terms of the CBH model.Coulombic barrier height Wm,hopping distance Rω,and the density of localized states N(EF) are valued at different frequencies.Dielectric constant ε_1(ω,T) and dielectric loss ε_2(ω,T) are discussed in terms of the dielectric polarization process.The dielectric modulus shows the non-Debye relaxation in the material.The extracted relaxation time by using the imaginary part of modulus(M')is found to follow the Arrhenius law.
|
| 收稿时间： | 2015-10-31 |
Alternating current characterization of nano-Pt(II) octaethylporphyrin (PtOEP) thin film as a new organic semiconductor |
| |
| M Dongol,M M El-Nahass,A El-Denglawey,A A Abuelwafa,T Soga.Alternating current characterization of nano-Pt(II) octaethylporphyrin (PtOEP) thin film as a new organic semiconductor[J].Chinese Physics B,2016,25(6):67201-067201. |
| |
| Authors: | M Dongol M M El-Nahass A El-Denglawey A A Abuelwafa T Soga |
| |
| Affiliation: | 1.Nano and Thin Film Laboratory, Physics Department, Faculty of Science, South Valley University, Qena 83523, Egypt;2.Physics Department, Faculty of Education, Ain Shams University, Roxy, Cairo 11757, Egypt;3.Physics Department, Faculty of Applied Medical Science, Taif University, Turabah 21995, Kingdom of Saudi Arabia;4.Department of Frontier Materials, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan |
| |
| Abstract: | Alternating current (AC) conductivity and dielectric properties of thermally evaporated Au/PtOEP/Au thin films are investigated each as a function of temperature (303 K-473 K) and frequency (50 Hz-5 MHz). The frequency dependence of AC conductivity follows the Jonscher universal dynamic law. The AC-activation energies are determined at different frequencies. It is found that the correlated barrier hopping (CBH) model is the dominant conduction mechanism. The variation of the frequency exponent s with temperature is analyzed in terms of the CBH model. Coulombic barrier height Wm, hopping distance Rω, and the density of localized states N(EF) are valued at different frequencies. Dielectric constant ε1(ω,T) and dielectric loss ε2(ω,T) are discussed in terms of the dielectric polarization process. The dielectric modulus shows the non-Debye relaxation in the material. The extracted relaxation time by using the imaginary part of modulus (M") is found to follow the Arrhenius law. |
| |
| Keywords: | PtOEP thin films AC conductivity dielectric constants organic semiconductors solar cell nano materials |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《中国物理 B》浏览原始摘要信息 |
|
点击此处可从《中国物理 B》下载免费的PDF全文 |
|
