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

doi:10.3791/54628

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^*

^*Corresponding author for this work

Waseda Research Institute for Science and Engineering

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

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.

Original language	English
Article number	e54628
Journal	Journal of Visualized Experiments
Volume	2016
Issue number	117
DOIs	https://doi.org/10.3791/54628
Publication status	Published - 2016 Nov 15

Keywords

Color rendering index
Engineering
Exciplex
Exciton
Fluorescent π-conjugated polymer
Polymer light-emitting electrochemical cell
White light emission

ASJC Scopus subject areas

Neuroscience(all)
Chemical Engineering(all)
Immunology and Microbiology(all)
Biochemistry, Genetics and Molecular Biology(all)

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10.3791/54628

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title = "Fabrication of white light-emitting electrochemical cells with stable emission from exciplexes",

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'{\'e}clairage (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.",

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author = "Soichi Uchida and Daisuke Takizawa and Satoru Ikeda and Hironori Takeuchi and Suzushi Nishimura and Hiroyuki Nishide and Yoshinori Nishikitani",

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AU - Uchida, Soichi

AU - Takizawa, Daisuke

AU - Ikeda, Satoru

AU - Takeuchi, Hironori

AU - Nishimura, Suzushi

AU - Nishide, Hiroyuki

AU - Nishikitani, Yoshinori

PY - 2016/11/15

Y1 - 2016/11/15

N2 - 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.

AB - 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.

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KW - Fluorescent π-conjugated polymer

KW - Polymer light-emitting electrochemical cell

KW - White light emission

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Fabrication of white light-emitting electrochemical cells with stable emission from exciplexes

Abstract

Keywords

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