The photophysical pathway has been revealed for triplet sensitization at the perovskite/rubrene interface. It involves rapid extraction on cooling of thermally excited charge carriers in the perovskite followed by triplet formation in the rubrene.
Significance and Impact
Current silicon-based solar cells cannot absorb wavelengths above 1100 nm, limiting their efficient use. The present results will help improve perovskite-based photon upconversion in these cells.
Work was performed in part at the Center for Nanoscale Materials
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