TitlePhotochemical Upconversion Theory: Importance of Triplet Energy Levels and Triplet Quenching
Publication TypeJournal Article
Year of Publication2019
AuthorsJefferies, D, Schmidt, TW, Frazer, L
JournalPhysical Review Applied
Start Page024023
Date Published08/2019
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Photochemical upconversion is a means to turn light that a solar cell cannot use into light that it can use, and thus could boost efficiency beyond the Shockley-Queisser limit. So far, though, it has not been possible to quantitatively predict the increased photocurrent. The authors use ray optics and exciton kinetics to compute a figure of merit that directly reflects solar-cell performance. They furthermore illustrate the applications of these methods to device design, by investigating the performance penalty imposed by Boltzmann statistics.
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