Comment on the applicability of Urbach's
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M.G. Sceats; Stuart A. Rice
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Article
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1974
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Elsevier Science
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English
⚖ 611 KB
The extent to which the absorption protile below the fust exciton band can be predicted without recourse to resonance transfer and strong exciton-phonon coupling is evaluated for a crystal transition derived from a moderately intense free molecule transition. It-is argued, on the basis of a simple m