Near infrared to vacuum ultraviolet absorption spectra and the optical constants of phthalocyanine and porphyrin films

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Abstract

Measurements are reported for photon energies between 0.5 and 11.8 eV of the absorption coefficient of thin films of free base, copper, and zinc phthalocyanines, chlorinated copper phthalocyanine, and free base protoporphyrin. Several new discrete transitions are observed in the ultraviolet spectra, in addition to a strong continuum component of absorption. The data covers a sufficiently extensive spectral range to permit the first determination of the spectral dependence of the optical constants for these materials.

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    Work supported by ONR Contract Nonr 225(83) and by the Advanced Research Projects Agency through the Center for Materials Research at Stanford University.

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    NSF Predoctoral Fellow; present address: IBM Research Division, San Jose, California. This work formed part of a dissertation submitted by B. H. Schechtman to the Department of Electrical Engineering, Stanford University, in partial fulfillment of the requirements for the Ph.D. degree.

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