Injection- and space charge limited-currents in doped conducting organic materials

作者: S. C. Jain , W. Geens , A. Mehra , V. Kumar , T. Aernouts

DOI: 10.1063/1.1352677

关键词:

摘要: Most conducting organic materials have a background p-type doping varying in the range 1015–1017 cm−3. We report results of theoretical and experimental study carrier transport p-doped Schottky diodes. The theory given this article shows that doped material with ohmic contacts current is at low voltages. If contact cathode replaced by an Al varies exponentially applied voltage V. changes to space charge limited (SCLC) high which change takes place depends on concentrations. In SCLC regime according well-known V2 law if there are no traps mobility independent electric field. either trapping or effect field important, as Vm, where m>2. investigated experimentally I–V characteristics diodes fabricated using PPV-based oligomer 2,5-di-n...

参考文章(15)
Nevill Francis Mott, Ronald Wilfrid Gurney, Electronic Processes in Ionic Crystals ,(1940)
Peter Mark, Murray A. Lampert, Current injection in solids ,(1970)
B. K. Crone, I. H. Campbell, P. S. Davids, D. L. Smith, C. J. Neef, J. P. Ferraris, Device physics of single layer organic light-emitting diodes Journal of Applied Physics. ,vol. 86, pp. 5767- 5774 ,(1999) , 10.1063/1.371591
A. J. Campbell, D. D. C. Bradley, D. G. Lidzey, Space-charge limited conduction with traps in poly(phenylene vinylene) light emitting diodes Journal of Applied Physics. ,vol. 82, pp. 6326- 6342 ,(1997) , 10.1063/1.366523
B. K. Crone, P. S. Davids, I. H. Campbell, D. L. Smith, Device model investigation of single layer organic light emitting diodes Journal of Applied Physics. ,vol. 84, pp. 833- 842 ,(1998) , 10.1063/1.368144
P. E. Burrows, Z. Shen, V. Bulovic, D. M. McCarty, S. R. Forrest, J. A. Cronin, M. E. Thompson, Relationship between electroluminescence and current transport in organic heterojunction light‐emitting devices Journal of Applied Physics. ,vol. 79, pp. 7991- 8006 ,(1996) , 10.1063/1.362350
S. Karg, M. Meier, W. Riess, Light-emitting diodes based on poly-p-phenylene-vinylene: I. Charge-carrier injection and transport Journal of Applied Physics. ,vol. 82, pp. 1951- 1960 ,(1997) , 10.1063/1.366003
S. V. Rakhmanova, E. M. Conwell, Electric-field dependence of mobility in conjugated polymer films Applied Physics Letters. ,vol. 76, pp. 3822- 3824 ,(2000) , 10.1063/1.126793
Laurence Lutsen, Peter Adriaensens, Heinrich Becker, Albert J. Van Breemen, Dirk Vanderzande, Jan Gelan, New Synthesis of a Soluble High Molecular Weight Poly(arylene vinylene): Poly[2-methoxy-5-(3,7-dimethyloctyloxy)-p-phenylene vinylene]. Polymerization and Device Properties Macromolecules. ,vol. 32, pp. 6517- 6525 ,(1999) , 10.1021/MA9904666
P. W. M. Blom, M. J. M. de Jong, J. J. M. Vleggaar, Electron and hole transport in poly(p‐phenylene vinylene) devices Applied Physics Letters. ,vol. 68, pp. 3308- 3310 ,(1996) , 10.1063/1.116583