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Fabrication of White Light-emitting Electrochemical Cells With Stable Emission From Exciplexes

Fabrication of White Light-emitting Electrochemical Cells With Stable Emission From Exciplexes

Soichi Uchida, Daisuke Takizawa, Satoru Ikeda, Hironori Takeuchi, Suzushi Nishimura, Hiroyuki Nishide, Yoshinori Nishikitani

J Vis Exp. 2016 Nov 15;(117):54628.

PMID: 27911375

Abstract:

The authors present an approach for fabricating stable white light emission from polymer light-emitting electrochemical cells (PLECs) having an active layer which consists of blue-fluorescent poly(9,9-di-n-dodecylfluorenyl-2,7-diyl) (PFD) and π-conjugated triphenylamine molecules. This white light emission originates from exciplexes formed between PFD and amines in electronically excited states. A device containing PFD, 4,4',4''-tris[2-naphthyl(phenyl)amino]triphenylamine (2-TNATA), Poly(ethylene oxide) and K2CF3SO3 showed white light emission with Commission internationale de l'éclairage (CIE) coordinates of (0.33, 0.43) and a Color Rendering Index (CRI) of Ra = 73 at an applied voltage of 3.5 V. Constant voltage measurements showed that the CIE coordinates of (0.27, 0.37), Ra of 67, and the emission color observed immediately after application of a voltage of 5 V were nearly unchanged and stable after 300 sec.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP248256533	Poly(9,9-di-n-dodecylfluorenyl-2,7-diyl)		248256-53-3	Price

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