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Low-density band-gap states in pentacene thin films probed with ultrahigh-sensitivity ultraviolet photoelectron spectroscopy

Appl. Phys. Lett. 95, 183303 (2009); doi:10.1063/1.3258351

Published 3 November 2009

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Tomoki Sueyoshi, Hirohiko Fukagawa, Masaki Ono, Satoshi Kera, and Nobuo Ueno
Graduate School of Advanced Integration Science, Chiba University Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
We detected a very low density of electronic states in the band gap of a nondoped pentacene thin film by using ultraviolet photoelectron spectroscopy with ultrahigh sensitivity and ultralow background. The gap states, which may originate from the highest occupied molecular orbital (HOMO) state in imperfect molecular packing regions, are distributed exponentially up to the Fermi level and control the Fermi level relative to the HOMO band. ©2009 American Institute of Physics
History: Received 9 June 2009; accepted 6 October 2009; published 3 November 2009
Permalink: http://link.aip.org/link/?APPLAB/95/183303/1
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KEYWORDS and PACS

Keywords
PACS
  • 71.20.Rv
    Electronic structure of polymers and organic compounds
  • 79.60.Bm
    Photoelectron spectra of clean metal, semiconductor, and insulator surfaces
  • 79.60.Fr
    Photoelectron spectra of polymers; organic compounds
  • 68.55.ag
    Semiconductor thin film nucleation and growth
  • YEAR: 2009

PUBLICATION DATA

ISSN:
0003-6951 (print)   1077-3118 (online)
Publisher:
AIP is a member of CrossRef AIP

REFERENCES (17)
View in Separate Window/Tab
  1. H. Ishii, K. Sugiyama, E. Ito, and K. Seki, Adv. Mater. 11, 605 (1999).
  2. S. Braun, W. R. Salaneck, and M. Fahlman, Adv. Mater. 21, 1450 (2009).
  3. J. Hwang, A. Wan, and A. Kahn, Mater. Sci. Eng., R. 64, 1 (2009).
  4. N. Koch, C. Chan, A. Kahn, and J. Schwartz, Phys. Rev. B 67, 195330 (2003).
  5. S. Kera, Y. Yabuuchi, H. Yamane, H. Setoyama, K. K. Okudaira, A. Kahn, and N. Ueno, Phys. Rev. B 70, 085304 (2004).
  6. H. Fukagawa, S. Kera, T. Kataoka, S. Hosoumi, Y. Watanabe, K. Kudo, and N. Ueno, Adv. Mater. 19, 665 (2007).
  7. S. Duhm, G. Heimel, I. Salzmann, H. Glowatzki, R. L. Johnson, A. Vollmer, J. P. Rabe, and N. Koch, Nature Mater. 7, 326 (2008). [MEDLINE]
  8. P. S. Bagus, V. Stämmler, and C. Wöll, Phys. Rev. Lett. 89, 096104 (2002). [MEDLINE]
  9. D. V. Lang, X. Chi, T. Siegrist, A. M. Sergent, and A. P. Ramirez, Phys. Rev. Lett. 93, 086802 (2004). [MEDLINE]
  10. H. Ding and Y. Gao, Appl. Phys. Lett. 86, 213508 (2005).
  11. N. Ueno and S. Kera, Prog. Surf. Sci. 83, 490 (2008), and references therein. [Inspec]
  12. K. Fujii, S. Kera, M. Oiwa, K. K. Okudaira, K. Sakamoto, and N. Ueno, Surf. Sci. 601, 3765 (2007). [Inspec]
  13. T. Kataoka, H. Fukagawa, S. Hosoumi, K. Nebashi, K. Sakamoto, and N. Ueno, Chem. Phys. Lett. 451, 43 (2008). [Inspec]
  14. S. Kera, H. Yamane, and N. Ueno, Prog. Surf. Sci. 84, 135 (2009).
  15. J. H. Kang, D. da Silva Filho, J. -L. Bredas, and X. -Y. Zhu, Appl. Phys. Lett. 86, 152115 (2005).
  16. N. Sato, K. Seki, H. Inokuchi, and Y. Harada, Chem. Phys. 109, 157 (1986).
  17. M. Pope and C. E. Swenberg, Electronic Processes in Organic Crystals and Polymers (Oxford, New York, 1999).






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