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Volumn 114, Issue 48, 2010, Pages 20424-20430

Simulation of hopping transport based on charge carrier localization times derived for a two-level system

Author keywords

[No Author keywords available]

Indexed keywords

CARRIER HOPPING; CARRIER LOCALIZATION; CHARGE HOPPING; CHARGE TRANSPORT; COMMONLY USED; CONDUCTING MATERIALS; CRYSTALLINE SEMICONDUCTORS; ELECTRON-TRANSFER REACTIONS; HOPPING MODELS; HOPPING TRANSPORT; HYDROGEN MOLECULAR ION; LIMITING CASE; MARCUS THEORY; ORGANIC SYSTEMS; TWO-LEVEL SYSTEM;

EID: 78650097206     PISSN: 19327447     EISSN: 19327455     Source Type: Journal    
DOI: 10.1021/jp104673h     Document Type: Article
Times cited : (13)

References (54)
  • 26
    • 78650085369 scopus 로고    scopus 로고
    • note
    • According to ref 3, in the three-dimensional case the ratio of the diffusion coefficient for the holes (that move by incoherent hopping) and their mobility D/μdc = ξhkBT/e can somewhat exceed the Nernst - Einstein relation kBT/e. Here ξh ≥ 1 reflects the fact that with the increase of the root mean square fluctuations, U, of the electrostatic potential in a material, the hopping conductivity of the holes, μdc, decreases faster than their diffusion coefficient D. In particular, at low temperatures (U ≫. kBT) the ratioD/μh depends on the bandwidth, U, of the band of quasilocalized states and on the degree to which it is filled with electrons, but only weakly depends on T. This conclusion correlates with the results of Monte Carlo simulations of the De/μe dependence on temperatute for electrons at the tail of the conduction band density of states in crystals, ref 25. Also, according to ref 13, in the presence of structural disorder eq 3 is not valid, and the charge carrier mobility must be calculated using eq 2 and the mean squared displacement {r2(t)} obtained from numerical simulations.
  • 47
    • 3042666997 scopus 로고
    • Chapman & Hall/CRC: London
    • Cox, D. R.; Smith, W. L. Queues; Chapman & Hall/CRC: London, 1991.
    • (1991) Queues
    • Cox, D.R.1    Smith, W.L.2


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.