In optimized rubrene-based nanoparticle blends for photon upconversion, singlet energy collection outcompetes triplet-pair separation, not singlet fission

Abstract

Conversion of near-infrared photons to visible light in rubrene based systems is made 20x more efficient when mixed with 0.5% wt DBP. This is not because singlet fission in rubrene is supressed, but because of reduced triplet losses.