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A Spirobifluorene Derivative as a Single‐Emitting Component for a Highly Efficient White Organic Electroluminescent Device
Author(s) -
Wen HsinYi,
Chao ChunMing,
Chang MeiYing,
Hsieh ChiungWen,
Hsieh ShuChen
Publication year - 2013
Publication title -
chempluschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.801
H-Index - 61
ISSN - 2192-6506
DOI - 10.1002/cplu.201300088
Subject(s) - electroluminescence , component (thermodynamics) , derivative (finance) , oled , materials science , white light , organic component , photochemistry , optoelectronics , nanotechnology , chemistry , physics , layer (electronics) , financial economics , environmental chemistry , economics , thermodynamics
We describe how the morphology, photoluminescence (PL), and electroluminescence properties of 2,2′,7,7′‐tetrakis(pyren‐1‐yl)‐9,9′‐spirobifluorene (TPSBF) are related to its film thickness and how, under optimized conditions, the three main PL emissions constitute a form of white light. We fabricated high‐brightness, broad‐spectrum, white‐light organic light‐emitting diodes, incorporating a single emission layer of the blue‐light‐emitting material TPSBF, which comprises four pyrene units linked to a spirobifluorene core. An organic light‐emitting device with the configuration indium tin oxide (170 nm)/4,4′,4′′‐tris[ N ‐(2‐naphthyl)‐ N ‐phenylamino]triphenylamine (15 nm)/4,4′‐bis[ N ‐(1‐naphthyl)‐ N ‐phenylamino]biphenyl (65 nm)/TPSBF (50 nm)/tris(8‐hydroxyquinoline)aluminum (30 nm)/LiF (0.8 nm)/Al (200 nm) exhibited a broad‐spectrum white emission with a maximum luminescence and current efficiency of 57 680 cd m −2 and 6.51 cd A −1 , respectively, and Commission International De l’Eclairage coordinates of (0.29,0.36).