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The observation of coherent triplet excitons and density of states functions in molecular crystals

โœ Scribed by A.H. Francis; C.B. Harris

Publisher
Elsevier Science
Year
1971
Tongue
English
Weight
568 KB
Volume
9
Category
Article
ISSN
0009-2614

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โœฆ Synopsis

The observation of coherent triplet Frenkel excitons is reported in a molecular crystal 1,2,4.5 tetrachlorobenzene. The results can be interpreted in terms of a one-dimensional model in which the largest intermolecular exchange interaction is associated with the translationally equivalent molecules along the a axis. Using the theory developed in the previous paper, the bandwidth, coherence length and density of states functions have been determined from a zero field optically detected microwave experiment for the lowest triplet band in tetrachlorobenzene at temperatures below 4.2%.

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