Journal
CHEMICAL PHYSICS LETTERS
Volume 601, Issue -, Pages 33-38Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cplett.2014.03.075
Keywords
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Funding
- National Science Foundation [CHE-1152677]
- US Department of Education, GAANN Award [P200A120170]
- National Science Council, ROC [NSC101-2221-E-002-156-MY3, 102-2221-E-002-182-MY3]
- Direct For Mathematical & Physical Scien
- Division Of Chemistry [1152677] Funding Source: National Science Foundation
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Tetracene, a molecule that undergoes singlet fission, is deposited on Si with variable thickness LiF spacer layers. In agreement with earlier work (Hayashi et al., 1983 [10]), the fluorescence intensity of the tetracene greatly increases as the LiF thickness approaches 100 nm. This increase is partly due to a 30% increase in the prompt fluorescence decay time but mostly results from weaker coupling of the luminescence into the Si substrate. A decrease in the prompt fluorescence lifetime is observed as the tetracene thickness is increased on bare Si. We find no evidence for triplet energy transfer to the Si. (C) 2014 Elsevier B.V. All rights reserved.
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