Radiunas, Edvinas Impact of t-butyl substitution in a rubrene emitter for solid state NIR-to-visible photon upconversion. [electronic resource] - Physical chemistry chemical physics : PCCP Apr 2020 - 7392-7403 p. digital Publication Type: Journal Article ISSN: 1463-9084 Standard No.: 10.1039/d0cp00144a doi