The origin of a 650 nm photoluminescence band in rubrene.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 22002212.
- Also identified by DOI 10.1002/adma.201102294.
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Abstract
Commonly observed variations in photoluminescence (PL) spectra of crystalline organic semiconductors, including the appearance or enhancement of certain PL bands, are shown to originate from a small amount of structural disorder (e.g., amorphous inclusions embedded in a crystal), rather than be necessarily related to chemical impurities or material oxidation. For instance, in rubrene, a minute amount of such disorder can lead to the appearance of a dominant PL band at 650 nm as a result of triplet excitons captured and fused at these sites, with a subsequent emission from the amorphous phase.
Medical subject headings
- Luminescent Measurements
- Naphthacenes