Electronic structure of pristine and sodium‐doped cyano‐substituted poly(2,5‐dihexyloxy‐p‐phenylenevinylene): A combined experimental and theoretical study
作者： M Fahlman , P Bröms , DA Dos Santos , SC Moratti , N Johansson
DOI: 10.1063/1.469228
关键词: Electronic structure 、 Fermi level 、 Analytical chemistry 、 Ultraviolet photoelectron spectroscopy 、 Fermi energy 、 X-ray photoelectron spectroscopy 、 Binding energy 、 Chemistry 、 Absorption (electromagnetic radiation) 、 Absorption spectroscopy
摘要: The electronic structure of cyano‐substituted poly(2,5‐dihexyloxy‐p‐phenylene‐vinylene), or CN‐PPV, has been studied in both pristine and doped states. Ultraviolet photoelectron spectroscopy (UPS) x‐ray (XPS), as well optical absorption have carried out under ultrahigh vacuum (UHV) conditions, the results interpreted with help quantum‐chemical calculations. For polymer, addition cyano groups to vinylene units does not affect width π‐bands closest Fermi level; however, positions flat parts upper are shifted by approximately 0.4 eV towards higher binding energies relative energy, compared corresponding bands other alkoxy‐substituted poly(p‐phenylenevinylene)s. On hand, there only marginal differences spectra; interband onset is comparable values for poly(p‐pheny...
scitation.org
harvard.edu
aip.org 
sci-hub.se 参考文章(26)
Göran Wendin, Göran Wendin, Breakdown of the One-Electron Pictures in Photoelectron Spectra ,(1981)
Yutaka Ohmori, Masao Uchida, Keiro Muro, Katsumi Yoshino, Visible-Light Electroluminescent Diodes Utilizing Poly(3-alkylthiophene) Japanese Journal of Applied Physics. ,vol. 30, pp. L1938- L1940 ,(1991) , 10.1143/JJAP.30.L1938
H. S. Woo, S. C. Graham, D. A. Halliday, D. D. C. Bradley, R. H. Friend, P. L. Burn, A. B. Holmes, Photoinduced absorption and photoluminescence in poly(2,5-dimethoxy-p-phenylene vinylene). Physical Review B. ,vol. 46, pp. 7379- 7389 ,(1992) , 10.1103/PHYSREVB.46.7379
M Lögdlund, R Lazzaroni, S Stafström, WR Salaneck, J-L Brédas, None, Direct observation of charge-inducedπ-electronic structural changes in a conjugated polymer Physical Review Letters. ,vol. 63, pp. 1841- 1844 ,(1989) , 10.1103/PHYSREVLETT.63.1841
C. K. Chiang, C. R. Fincher, Y. W. Park, A. J. Heeger, H. Shirakawa, E. J. Louis, S. C. Gau, Alan G. MacDiarmid, Electrical Conductivity in Doped Polyacetylene. Physical Review Letters. ,vol. 39, pp. 1098- 1101 ,(1977) , 10.1103/PHYSREVLETT.39.1098
N. C. Greenham, S. C. Moratti, D. D. C. Bradley, R. H. Friend, A. B. Holmes, Efficient light-emitting diodes based on polymers with high electron affinities Nature. ,vol. 365, pp. 628- 630 ,(1993) , 10.1038/365628A0
G. Gustafsson, Y. Cao, G. M. Treacy, F. Klavetter, N. Colaneri, A. J. Heeger, Flexible light-emitting diodes made from soluble conducting polymers Nature. ,vol. 357, pp. 477- 479 ,(1992) , 10.1038/357477A0
M. Logdlund, W. R. Salaneck, F. Meyers, J. L. Bredas, G. A. Arbuckle, R. H. Friend, A. B. Holmes, G. Froyer, Evolution of the electronic structure in a conjugated polymer series: polyacetylene, poly(p-phenylene), and poly(p-phenylenevinylene) Macromolecules. ,vol. 26, pp. 3815- 3820 ,(1993) , 10.1021/MA00067A015
W R Salaneck, Photoelectron spectroscopy of polyconjugated polymer surfaces and interfaces Reports on Progress in Physics. ,vol. 54, pp. 1215- 1249 ,(1991) , 10.1088/0034-4885/54/9/002
D. Braun, A. J. Heeger, Visible light emission from semiconducting polymer diodes Applied Physics Letters. ,vol. 58, pp. 1982- 1984 ,(1991) , 10.1063/1.105039