Abstract
In the system (poly-(N-vinyl carbazole) (PVK): trinitrofluorenone (TNF) a photoconductive complex is formed. Thin metal films are sputtered on BK7 glass substrates, forming two electrodes with 1 mm separation. The photoconductive complex is deposited from a solution in chlorobenzene/tetrahydrofurane on the glass substrate between the electrodes, forming a photoconductive detector. Photoconductivity of these planar detectors is studied using He-Ne laser light (λ=633 nm) as a function of electric field and for different TNF concentrations. An increase of photosensitivity is found for high TNF concentrations.
Time resolution of the photoconductive PVK:TNF detector is investigated using a ruby pulse laser (λ=694 nm). The possible use of such detectors in combination with other polymer lightguides is demonstrated. Compared to most polymer waveguide materials PVK exhibits a rather high refractive index ofn=1.7. Thus the coupling of light into the photoconductive film is achieved directly. The planar structure allows further integration of polymeric components for optoelectronics.
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References
D.B. Ostrowsky, R. Poirier, L.M. Reiber, C. Deverdun: Appl. Phys. Lett.22, 463 (1973)
K. Nishida, K. Tayuchi, Y. Matsumoto: Appl. Phys. Lett.35, 251 (1979)
S. Chandrasekhar, J.C. Campbell, A.G. Dentai, G.J. Qua: Electron. Lett.23, 501 (1987)
P.R. Smith, D.H. Auston, A.M. Johnson: Rev. Sci. Instrum.52, 138 (1980)
H. Hoegl: J. Phys. Chem.69, 755 (1965)
W.D. Gill: “Polymeric Photoconductors” inPhotoconductivity and Related Phenomena, ed. by J. Mort, D.M. Pai (Elsevier, New York 1976)
M. Lardon, E. Lell-Döller, J.W. Weigl: Mol Cryst.2, 241 (1967)
G. Weiser: J. Appl. Phys.43, 5028 (1972)
D.M. Pai: J. Chem. Phys.52, 2285 (1970)
W.D. Gill: J. Appl. Phys.43, 5033 (1972)
J. Frenkel: Phys. Rev.54, 647 (1938)
R. Bube: “Photoconductivity in Polycrystalline Films” inPhotoconductivity and Related Phenomena, ed. by J. Mort, D.M. Pai (Elsevier, New York 1976)
C. Wu, R.H. Bube: J. Appl. Phys.45, 648 (1974)