Abstract
In the last three years the optical detection and spectroscopy of single impurity molecules in solids (single molecule detection or SMD) became feasible using both absorption[1] and fluorescence[2] techniques. These experiments opened up a new area of optical spectroscopy of solids where truly unique environments and quantum effects can be studied in detail. In the pentacene in p-terphenyl system, the surprising observation of spectral diffusion in a crystal[3] proved that novel physical effects can be observed.
© 1992 IQEC
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