Radiative Rate Modulation Reveals Near‐Unity Quantum Yield of Graphene Quantum Dots (Advanced Optical Materials 19/2021). Issue 19 (4th October 2021)

• Record Type: Journal Article
• Authors: Ghosh, Subhabrata; Oleksiievets, Nazar; Enderlein, Jörg; Chizhik, Alexey I.
• Is Part Of: Advanced optical materials. Volume 9:Issue 19(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-10-04
• Subjects: graphene quantum dots -- nanocavities -- optical microscopy -- plasmonics -- quantum yield; Optical materials -- Periodicals; Photonics -- Periodicals; 620.11295
• DOI: 10.1002/adom.202170074
• Languages: English
• ISSNs: 2195-1071

Abstract

Abstract : A fundamental but difficult to assess property of fluorophores is their fluorescence quantum yield. Conventional measurements are prone to errors when the sample contains absorbing but non‐luminescent species, which is commonly encountered in complex systems such as graphene quantum dots. In article number 2100314, Jörg Enderlein, Alexey I. Chizhik and co‐workers use a plasmonic nanocavity to measure quantum yields of graphene quantum dots by modulating their radiative rate. This absolute method is insensitive to the presence of non‐luminescent species within the sample.