Photo-enhanced conduction in inhomogeneous thin film space charge limited conducting systems

• Autorzy: Bąk G. W.

Warianty tytułu

PL

Fotowzmocnione przewodnictwo w niejednorodnych układach cienkowarstwowych zdominowanych przez prądy ograniczone ładunkiem przestrzennym

• Języki publikacji: EN

Abstrakty

EN

Photo-enhancement of space-charge limited currents in deliberately modified thin-film structures is studied using numerical methods. The obtained results suggest that it should be possible to obtain optically induced increase in current density of the order of 107 in modified thin film structures as a result of deliberate modification of trap density at the emitter consisting in formation of high density of traps at the emitter.

PL

Badane są metodami numerycznymi prądy ograniczone ładunkiem przestrzennym w świadomie modyfikowanych strukturach cienkowarstwowych. Otrzymane wyniki sugerują, że powinno być możliwe uzyskanie optycznie indukowanego wzrostu gęstości prądu rzędu 107 w układach z modyfikacją koncentracji pułapek przy emiterze, polegającą na wytworzeniu cienkiej warstwy o dużej koncentracji pułapek.

Słowa kluczowe

EN

space charge limited currents; optical switching

PL

prądy ograniczone ładunkiem przestrzennym; komutacja optyczna

• Wydawca: Wydawnictwo Politechniki Łódzkiej
• Czasopismo: Scientific Bulletin. Physics / Lodz University of Technology
• Rocznik: 2016
• Tom: Vol. 37
• Strony: 11--20
• Opis fizyczny: Bibliogr. 18 poz., 1 rys., wykr.

Twórcy

autor

Bąk G. W.

• Institute of Physics, Lodz University of Technology, Wólczańska 219/223, 90-924 Łódź, Poland

Bibliografia

• [1] Ming Hua Tang et.al. 2012. Top electrode-dependent resistance switching behaviors of ZnO thin films deposited on Pt/Ti/SiO2/Si substrate. Microelectronic Engineering 93: 35-38.
• [2] Conte G., Rossi M.C., Spaziani F., Arcangelli F. 2005. Dielectric relaxation and space charge limited transport in polycrystalline CVD diamond. Diamond and Related Materials 14: 570-574.
• [3] Madaleno J.C., Pereira L. 2005. The modulation of electrical carrier transport in metal-MPCVD diamond due to the microcrystalline inhomogeneous barriers. Diamond and Related Materials 14: 584-588.
• [4] Liu J., Gu P., Zhou F., Xu Q., Lu J., Li H, Wang L. 2013. Preparation of TCPP: block copolymer composites and study of their memory behavior by tuning the loading ratio of TCPP in the polymer matrix. Journal of Materials Chemistry C 1: 3947-3954.
• [5] Deepa M., Kharkwal A., Joshi A.G., Srivastava A.K. 2011. Charge Transport and Electrochemical Response of Poly(3,4-ethylenedioxypyrrole) Film Improved by Noble-Metal Nanoparticles. Journal of Physical Chemistry B, 115: 7321-7331.
• [6] Moet D.J.D., Lenes M., Kotlarski J.D., Veenstra S.C., Sweelssen J., Koetse M.M., de Boer B., Blom P.W.M. 2009. Impact of molecular weight on charge carrier dissociation in solar cells from a polyfluorene derivative. Organic Electronics 10: 1275-1281.
• [7] Szymanski M.Z., Luszczynska B., Verilhac J.-M., Reiss P., Djurado D. 2013. Simplified transient space-charge-limited current measurements of mobility using transimpedance amplifier. Organic Electronics: Materials, Physics, Chemistry and Applications 14(1): 230-235.
• [8] Folkes P.A., Olver K., 2013. Space-charge limited current in the series resistance of GaAs solar cells. Journal of Physics D:Applied Physics 46: 485102.
• [9] Nicolet M-A. 1996. Unipolar Space-charge-limited Current in Solids with Nonuniform Spatial Distribution of Shallow Traps. Journal of Applied Physics, 33 (11): 4224-4235.
• [10] Sworakowski J. 1970. Space-Charge-Limited Currents in Solids with Nonuniform Spatial Trap Distribution. Journal of Applied Physics, 41(1): 292-295.
• [11] Bąk G.W., Lipinski A. 1994. Space charge-limited currents in thin film solid dielectrics with non-uniform deep-trap distributions: numerical solutions. Thin Solid Films 238: 290-294.
• [12] Bąk G.W. 1996. Space-charge-limited currents in inhomogeneous thin-film insulators: numerical solutions. Journal of Physics: Condensed Matter 8: 4145-4155.
• [13] Dacuna J., Salleo A. 2011. Modeling space-charge-limited currents in organic semiconductors: Extracting trap density and mobility. Phys. Rev. B 84: 195209-1 - 195209-9.
• [14] Dacuna J., Xie W., Salleo A. 2012. Estimation of the spatial distribution of traps using space-charge-limited current measurements in an organic single crystal. Phys. Rev. B 86: 115202-1 - 115202-6.
• [15] Delannoy P., Scott M., Berrehar J., 1975 Comment on the origin of photoenhanced current in organic insulators under inhomogeneous excitation. Physica Status Solidi (a) 32:577-584.
• [16] Lampert M.A., Mark P. 1970. Current Injection in Solids, New York: Academic Press.
• [17] Godlewski J., Kalinowski J. 1979. Photo-enhanced currents in organic insulators. Physica Status Solidi (a), 53: 161-170.
• [18] Kalinowski J., Godlewski J. 1978. Spatial behaviour of the charge created at the illuminated interface molecular crystal/electrolyte. Chemical Physics 32: 201-213.

Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).