Investigation the Dependence of Mobility on Carrier Concentration and Temperature in Organic Semiconductors
محورهای موضوعی :
Journal of Physical & Theoretical Chemistry
Ali Mahmoudloo
1
(Department of Basic Science, Farhangian University, Tehran. Iran)
تاریخ دریافت : 1401/08/24
تاریخ پذیرش : 1402/01/12
تاریخ انتشار : 1400/12/10
کلید واژه:
Percolation theory,
Charge carrier mobility,
Organic semiconductor,
amorphous organic materials,
چکیده مقاله :
The charge carrier mobility is a key performance criteria for organic semiconductors. High-mobility values allow fast device operation as needed for low-cost electronics on large areas with performance meeting market demands. Mobility is conveniently extracted from thin film transistors (TFT) characteristics using the standard gradual channel approximation model. This approach evaluates the mobility of charges during their transport through the high-density accumulation layer at the semiconductor-dielectric interface. This value is therefore directly representative of transistor operation and is a relevant parameter for device integration into circuits. In this paper we have calculated the mobility of an organic semiconductor, one can use percolation theory,. The current flows through the bonds connecting the sites in the network. So far, much attention has been devoted to explain the temperature dependence of the mobility. The model gives a non-Arrhenius-type temperature dependence, which has also been supported by numerical simulations and analytical calculations.
منابع و مأخذ:
J. Brabec, N. S. Sariciftci, J. C. Hummelen, Plastic Solar Cells, Adv. Funct. Mater., 11 (2001) 15.
C. Krebs, Fabrication and processing of polymer solar cells: A review of printing and coating techniques, Sol. Energy Mater. Sol. Cells, 93 (2009) 394-412.
Li, R. Zhu, and Y. Yang, Polymer solar cells, Nature Photon., 6 (2012) 153161.
Hoppe and N. S. Sariciftci, Organic solar cells: An overview, J. Mater. Res., 19 (2004)19241945.
K. Wei, C. W. Lin, C. C. Yang, Y. W. Kiang, J. H. Lee, H. Y. Lin, Emission characteristics of organic light-emitting diodes and organic thin-films with planar and corrugated structures, Int. J. Mol. Sci., 11 (2010) 1527-1545.
Kappaun, C. Slugovc, E. J. W. List, Phosphorescent organic light-emitting devices: Working principle and iridium based emitter materials, Int. J. Mol. Sci., 9 (2008) 1527-1547.
Liang, Y. Wang, D. Li, X. Ji, F. Zhang, Z. He, Modeling and simulation of bulk heterojunction polymer solar cells, Sol. Energy Mater. Sol. Cells, 127 (2014) 67–86.
Tromholt, M. Manceau, M. Helgesen, J. E. Carle, F. C. Krebs, Degradation of semiconducting polymers by concentrated sunlight, Sol. Energy Mater. Sol. Cells, 95 (2011) 1308.
Zhou, J. Pei, Q. Dong, X. Sun, Y. Liu, W. Tian, Donor- Acceptor Molecule as the Acceptor for Polymer-Based Bulk Heterojunction Solar Cells, J. Phys. Chem. C, 113 (2009) 7882.
Rezzonico, B. Perucco, E. Knapp, R. Hausermann, N. A. Reinke, F. Muller, B. Ruhstaller, Numerical analysis of exciton dynamics in organic light-emitting devices and solar cells, J. of Photonics for Energy, 1 (2011) 011005-1.
D. Kotlarski, L. J. A. Koster, P. W. M. Blom, M. Lenes, and L. H. Slooff, Combined optical and electrical modeling of polymer:fullerene bulk heterojunction solar cells, J. Appl. Phys. 103 (2008) 084502.
H. Fallahpour, A. Gagliardi, F. Santoni, D. Gentilini, A. Zampetti, M. Auf der Maur, and A. Di Carlo Modeling and simulation of energetically disordered organic solar cells, J. Appl. Phys., 103(2014) 184502.
J. A. Koster, E. C. P. Smits, V. D. Mihailetchi, P. W. M. Blom, Device model for the operation of polymer/fullerene bulk heterojunction solar cells, Phys. Rev. B, 72 (2005) 085205.
Mahmoudloo, Transient Trap-Limited Field Dependence charge carrier transport in organic semiconductors for time of flight configuration, Journal of Optoelectronical Nanostructures, 6.3. (2021)
Nelson, J. J. Kwiatkowski, J. Kirkpatrick, and J. M. Frost, Modeling charge transport in organic photovoltaic materials, Acc. Chem. Res., 42 (2009) 1768.
F. Stelzl, Uli Wurfel, Modeling the influence of doping on the performance of bulk heterojunction organic solar cells: One-dimensional effective semiconductor versus two-dimensional onor/acceptor model, Phys. Rev. B., 86 (2012) 075315.
Ray and M. A. Alam, Random vs regularized OPV: Limits of performance gain of organic bulk heterojunction solar cells by morphology engineering, Sol. Energy Mater. Sol. Cells, 99 (2012) 204.
Pfeiffer , K. Leo, X. Zhou, J.S. Huang, M. Hofmann, A. Werner, J. Blochwitz-Nimoth, Doped organic semiconductors: Physics and application in light emitting diodes, Organic Elec. 4 (2003) 89103.
A. Gregg, Transport in Charged Defect-Rich p-Conjugated Polymers, J. Phys. Chem. C, 113 (2009) 5899.
A. Gregg, Charged defects in soft semiconductors and their influence on organic photovoltaics, Soft Matter., 5 (2009) 2985
Nollau, M. Pfeiffer, T. Fritz, K. Leo, Controlled n-type doping of a molecular organic semiconductor: naphthalenetetracarboxylic dianhydride (NTCDA) doped with bis (ethylenedithio)- tetrathiafulvalene (BEDT-TTF), J. Appl. Phys., 87 (2000) 4340-4343.
Veysel Tunc, A. De Sio, D. Riedel, F. Deschler, E. Da Como, J. Parisi, E. von Hauff, Molecular doping of low-bandgap-polymer: fullerene solar cells: Effects on transport and solar cells, Org. Electron., 13 (2012) 290.
Maennig, M. Pfeiffer, A. Nollau, X. Zhou, K. Leo, P. Simon, Controlled p-type doping of polycrystalline and amorphous organic layers: Self-consistent description of conductivity and field-effect mobility by a microscopic percolation model, Phys. Rev. B, 64 (2001) 195208.
A. Trukhanov, V. V. Bruevich, and D. Y. Paraschuk, Effect of doping on performance of organic solar cells, Phys. Rev. B, 84 (2011) 205318.
