Abstract

Red shift of green-emission band has been observed for fac tris(2-phenylpyridine) iridium (Ir(ppy)3) doped in polycarbonate at 8 K during time evolution after 355-nm laser of 1-ns pulse width. We explain the peak shift and vibronic structure of the emission band using the Franck-Condon principle and the model of (1) three zero-field splitting substates of the triplet state, (2) relaxation processes among the three substates, and (3) different Huang-Rhys factors for these substates. Good agreement was obtained between the calculated and measured emission spectra at various delay times.

© 2005 Chinese Optics Letters

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  2. T. Tsuboi and M. Tanigawa, Thin Solid Films 438-439, 301 (2003).
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2004

I. Tanaka, Y. Tabata, and S. Tokito, Jpn. J. Appl. Phys. 43, L1601 (2004).

2003

W. J. Finkenzeller and H. Yersin, Chem. Phys. Lett. 377, 299 (2003).

T. Tsuboi and M. Tanigawa, Thin Solid Films 438-439, 301 (2003).

1999

M. A. Baldo, M. E. Thompson, and S. R. Forrest, Pure Appl. Chem. 71, 2095 (1999).

1991

T. W. Hagler, K. Pakbaz, K. F. Voss, and A. J. Heeger, Phys. Rev. B 44, 8652 (1991).

1981

M. F. Granville, B. E. Kohler, and J. B. Snow, J. Chem. Phys. 75, 3765 (1981).

Chem. Phys. Lett.

W. J. Finkenzeller and H. Yersin, Chem. Phys. Lett. 377, 299 (2003).

J. Chem. Phys.

M. F. Granville, B. E. Kohler, and J. B. Snow, J. Chem. Phys. 75, 3765 (1981).

Jpn. J. Appl. Phys.

I. Tanaka, Y. Tabata, and S. Tokito, Jpn. J. Appl. Phys. 43, L1601 (2004).

Phys. Rev. B

T. W. Hagler, K. Pakbaz, K. F. Voss, and A. J. Heeger, Phys. Rev. B 44, 8652 (1991).

Pure Appl. Chem.

M. A. Baldo, M. E. Thompson, and S. R. Forrest, Pure Appl. Chem. 71, 2095 (1999).

Thin Solid Films

T. Tsuboi and M. Tanigawa, Thin Solid Films 438-439, 301 (2003).

Other

T. Tsuboi and N. Aljaroudi, in Preceedings of Int. Conf. Sci. Tech. Emissive Display EL2004 283 (2004).

T. Tsuboi and N. Aljaroudi, Opt. Mater. (to be published).

K. K. Rebane, Impurity Spectra of Solids (Plenum Press, New York, 1970) chap.2.

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