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Volumn 109, Issue 5, 2005, Pages 1849-1856

Band structure of the four pentacene polymorphs and effect on the hole mobility at low temperature

Author keywords

[No Author keywords available]

Indexed keywords

BAND STRUCTURE; CRYSTALS; ELECTRONIC STRUCTURE; HOLE MOBILITY; LIGHT EMITTING DIODES; POLARIZATION; SEMICONDUCTOR INSULATOR BOUNDARIES; THIN FILMS; TRANSISTORS;

EID: 13444311043     PISSN: 15206106     EISSN: None     Source Type: Journal    
DOI: 10.1021/jp0457489     Document Type: Article
Times cited : (164)

References (73)
  • 5
    • 13444277487 scopus 로고
    • (a) Eley, D. D. Nature 1946, 126, 819.
    • (1946) Nature , vol.126 , pp. 819
    • Eley, D.D.1
  • 48
    • 13444308503 scopus 로고    scopus 로고
    • note
    • This approximation is valid for very apolar systems (such as pentacene). In general, the orbital energies need to be corrected for the effect of aie crystal field using, for example, an embedding technique.
  • 59
    • 13444255136 scopus 로고    scopus 로고
    • note
    • The bandwidth obtained from the analytical expression is ca. 1.5 times larger because the intermolecular overlap was neglected. Its inclusion, however, does not lead to a similarly manageable expression.
  • 60
    • 13444299352 scopus 로고    scopus 로고
    • note
    • We have found, as in ref 51, that the Hamiltonian matrix elements are proportional to the corresponding interorbital overlap to an excellent degree of approximation. This observation could be used to develop more approximate treatments.
  • 66
    • 13444306741 scopus 로고    scopus 로고
    • note
    • This approximation overestimates the thermalization due to each collision (there is probably a memory of the initial state it), and it neglects the nonequilibrium distribution that is induced when transport properties are measured. On the other hand, these effects are easily captured by interpreting T as an "effective" time between collisions.
  • 67
    • 13444294434 scopus 로고    scopus 로고
    • note
    • The validity of such an approximation at low temperature was verified in ref 11. Because only the k values close to the band maxima are involved, the most important error introduced by this assumption is due to the direction dependence of t.
  • 70
    • 13444306740 scopus 로고    scopus 로고
    • Dodabalapur, A.; Torsi, L.; Katz, H. E. Science 1995, 268, 270; Appl Phys. Lett. 1996, 68, 108.
    • (1996) Appl Phys. Lett. , vol.68 , pp. 108
  • 71
    • 13444297943 scopus 로고    scopus 로고
    • note
    • Very similar results (projected in the (001) plane) are obtained when the full 3D crystal is considered.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.