Charge-Transfer States Enhance Triplet Yield in Silicon Quantum Dot-Pyrene Hybrid Nanostructure.
Photon upconversion based on triplet-triplet annihilation can utilize incoherent sub-bandgap photons for energy conversion and photocatalysis. Though quantum dots (QDs), with their tunable bandgaps, make attractive triplet photosensitizers, energy transfer must compete with other exciton-depleting pathways that stem fr...