Photoelectric properties of host materials based on diphenyl sulfone as acceptor and the performances in green phosphorescent OLEDs
Source abstract
Abstract
Abstract Three novel diphenyl sulfone derivatives of PPSPCz, PSPSF and DPPSPF with different donors carbazole, spirobifluorene and spirofluorene were synthesized in order to investigate the effects of donors on the properties of the host materials. The photoluminescence spectrum of PPSPCz exhibited red-shift than that of PSPSF and DPPSPF because of the stronger ability of carbazole. The triplet energy levels of PPSPCz, PSPSF and DPPSPF were 2.64, 2.48 and 2.81 eV, respectively. The green PhOLEDs were prepared by using the titled materials as hosts and tris(2-phenylpyridine)iridium [Ir (ppy)3] as emitter. The PhOLED based on PPSPCz exhibited the better performance with the ηc, max of 53.8 cd/A, ηp, max of 38.2 l m/W and EQEmax of 15.4%, respectively.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Organic Light-Emitting Diodes Research · Luminescence and Fluorescent Materials · Organic Electronics and Photovoltaics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (24)
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