Photo- and electroluminescence behavior of biphenyl containing conjugated polymer

Authors: TUĞBA KAYA DENİZ, DOĞUKAN HAZAR APAYDIN, ALİ CAN ÖZELÇAĞLAYAN, LEVENT KAMİL TOPPARE, ALİ ÇIRPAN

Abstract: Light emitting properties of poly[4-(5-(biphenyl- 4-yl)-4-hexylthiophen-2-yl)-2-dodecyl-7-(4-hexyl-thiophen-2-yl)-2H-benzo[d][1,2,3]-triazole] (PPhHTBT) and poly(9-vinylcarbazole) (PVK) blends were investigated with a configuration of ITO/PEDOT-PSS/BLEND/Ca/Al in ratios ranging from 5 to 100 wt\% in PPhHTBT. Thin film and solution spectra of all blends revealed that energy transfer was completely achieved. Device performance increased for all blends and reached 1.1 cd/A for 30 wt\% PPhHTBT.

Keywords: Light emitting diode, photoluminescence, polymer blend, poly(9-vinylcarbazole)

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