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Modification on the Unoccupied Electronic Structure of Organic Semiconductor by Alkali Metal

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Abstract

We have investigated the evolution of both the occupied and unoccupied states for alkali metal (Cs and Na) doped Copper-Phthalocyanine (CuPc) with photoemission and inverse photoemission spectroscopy. As the doping ratio increases, the lowest unoccupied molecular orbital (LUMO) of CuPc shifts downward, reaching the Fermi level. After the saturation, the LUMO intensity decreases monotonically, while a gap state grows in the valence spectra, which gives direct evidence for the origin of the doping-induced gap state in CuPc molecules.

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References

  1. C. W. Tang and S. A. VanSlyke, Appl. Phys. Lett. 51, 913 (1987).10.1063/1.98799

    Article  CAS  Google Scholar 

  2. Z. Bao, A. J. Lovinger, and A. Dodabaladur, Appl. Phys. Lett. 69, 3066 (1996).10.1063/1.116841

    Article  CAS  Google Scholar 

  3. C. W. Tang, Appl. Phys. Lett. 48, 183 (1986).10.1063/1.96937

    Article  CAS  Google Scholar 

  4. A. J. Heeger, J. R. Schriefer, and W. P. Su, Rev. Mod. Phys. 40, 3439 (1988).

    Google Scholar 

  5. C. W. Tang and S. A. VanSlyke, and C. H. Chen, J. Appl. Phys. 65, 3610 (1989).

    Article  CAS  Google Scholar 

  6. J. Kido, K. Hongawa, K. Okyama, and K. Nagai, Appl. Phys. Lett. 64, 815 (1994).10.1063/1.111023

    Article  CAS  Google Scholar 

  7. Y. Gao and L. Yan, Chem. Phys. Lett. 380, 451 (2003).10.1016/j.cplett.2003.09.012

    Article  CAS  Google Scholar 

  8. L. Yan, N. J. Watkins, S. Zorba, Y. Gao, and C. W. Tang Appl. Phys. Lett. 79, 4148 (2001).10.1063/1.1426260

    Article  CAS  Google Scholar 

  9. M.G. Mason, C.W. Tang, L -S. Hung, P. Raychaudhuri, J. Madathil, D.J. Giesen, L. Yan, Q.T. Le, Y. Gao, S.-T. Lee, L.S. Liao, L.F. Cheng, W.R. Salaneck, D.A. dos Santos, and J.L. Brédas, J. of Appl. Phys. 89, 2756 (2001).10.1063/1.1324681

    Article  CAS  Google Scholar 

  10. H. Ding and Y. Gao, Appl. Phys. Lett. 86, 213508 (2005).10.1063/1.1935750

    Article  Google Scholar 

  11. J. Wusten, S. Berger, K. Heimer, S. Lach, and Ch. Ziegler, J. of Appl. Phys. 98, 013705 (2005).

    Article  Google Scholar 

  12. J. Wusten, K. Heimer, S. Lach, and Ch. Ziegler, J. of Appl. Phys. 102, 023708 (2007).

    Article  Google Scholar 

  13. H. Namatame, M. Tamura, M. Nakatake, H. Sto, Y. Ueda, M. Taniguchi, and M. Fujisawa, J. Electron Spectrosc. Relat. Phenom. 80, 393 (1996).

    Article  CAS  Google Scholar 

  14. Y. Harima, K. Yamashita, H. Ishii, K. Seki, Thin Solid Films, 366, 237 (2000).10.1016/S0040-6090(00)00887-7

    Article  CAS  Google Scholar 

  15. M. S. Liao, S. Scheiner, J. Chem. Phys. 114, 9780 (2001).10.1063/1.1367374

    Article  CAS  Google Scholar 

  16. A. Yakimov and S. R. Forrest, Appl. Phys. Lett. 80, 1667 (2002).10.1063/1.1457531

    Article  CAS  Google Scholar 

  17. I. G. Hill, A. Kahn, Z. G. Soos, and R. A. Pascal Jr, Chem. Phys. Lett. 327, 181 (2000).

    Article  CAS  Google Scholar 

  18. H. Ding and Y. Gao, J. Appl. Phys. 102, 043703 (2007).10.1063/1.2769952

    Article  Google Scholar 

  19. H. Ding and Y. Gao, unpublished.

  20. H. Ding and Y. Gao, Appl. Phys. Lett. 87, 051918 (2005).10.1063/1.2007858

    Article  Google Scholar 

  21. V. Dose and G. Reusing, Appl. Phys. 23, 131 (1980).10.1007/BF00899707

    Article  CAS  Google Scholar 

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Authors and Affiliations

  1. Department of Physics and Astronomy, University of Rochester, 14627, Rochester, NY, USA

    Huanjun Ding, Kiwan Park & Yongli Gao

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  1. Huanjun Ding
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  2. Kiwan Park
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  3. Yongli Gao
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Ding, H., Park, K. & Gao, Y. Modification on the Unoccupied Electronic Structure of Organic Semiconductor by Alkali Metal. MRS Online Proceedings Library 1029, 334 (2007). https://doi.org/10.1557/PROC-1029-F03-34

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  • DOI: https://doi.org/10.1557/PROC-1029-F03-34

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