Published in
Royal Society of Chemistry, RSC Advances, 39(12), p. 25440-25448, 2022
DOI: 10.1039/d2ra03447f
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A first principles examination of phosphorescence
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Abstract
Phosphorescence is naturally spin-forbidden, and weak. Consequentially, to build the operator, one needs help from other excited states. Unfortunately, sometimes some states are more difficult to deal with than others.