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Multi‐peak and chromaticity‐stable top‐emitting white organic light‐emitting diodes using single blue emitter
Author(s) -
Zhu Wenqing,
Wu Xiaoliang,
Sun Wenbing,
Li Jiaheng,
Xiong Linghao,
Cao Jin
Publication year - 2013
Publication title -
physica status solidi (rrl) – rapid research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.786
H-Index - 68
eISSN - 1862-6270
pISSN - 1862-6254
DOI - 10.1002/pssr.201307077
Subject(s) - chromaticity , common emitter , optoelectronics , oled , materials science , diode , light emitting diode , wavelength , optics , layer (electronics) , physics , nanotechnology
Abstract We have fabricated multi‐peak and chromaticity‐stable top‐emitting white organic light‐emitting diodes (TEWOLEDs) using single blue emitter. Besides the intrinsic emission of blue emitter, the additional emission can be well realized by simply adjusting the thickness of hole transporting layer (HTL), thus modifying the optical cavity length to obtain different resonant wavelengths. The detailed variation process for multi‐peak spectra with the increase of HTL thickness is studied, which provides a guidance for the design of microcavity TEWOLEDs.(© 2013 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)