ScholarWorks: Color tuning of doped PLEDs by energy transfer from PVK to dopant constituted with biphenyl and butadienyl unit

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School of Materials Science and Engineering

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Flexible OLED new materials, process and fabrication
Touch Screen Panel(TSP) new materials and process new materials and process
Nano-materials synthesis and application (Ag nano-wire and metal mesh electrode)

Color tuning of doped PLEDs by energy transfer from PVK to dopant constituted with biphenyl and butadienyl unit

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Title: Color tuning of doped PLEDs by energy transfer from PVK to dopant constituted with biphenyl and butadienyl unit

Author: Han, Yoon Soo; Kim, Hoyoung; Choi, Byeong Dae; Kwon, Younghwan; Hur, Youngjune; Kwak, Giseop; Kim, Soon Hak; Park, Lee Soon; Choi, Byeong-Dae

Keywords: Dopant; Energy transfer; Host; Polymer light emitting diode (PLED)

Abstract: A dopant, 4,4'-bis(dimethyl[4-(2-phenyl-buta-1,3-dienyl)phenyl]amine) bipheayl (BPAB), was synthesized, and single layered polymer light emitting diode (PLED)s, ITO/Host:Dopant/Al, were fabricated with blends of poly(vinyl carbazole) (PVK) as host and BPAB as dopant. The electroluminescence (EL) was observed in doped PLEDs. From the EL and photoluminescence (PL) spectra, the existence of energy transfer from host to dopant was verified. With increasing content of dopant (BPAB), blue emission originated from PVK reduced, but didn'