Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Solution-processed WS2 and its doping in PEDOT:PSS for tailoring hole injection in near ultraviolet organic light-emitting diodes

Not Accessible

Your library or personal account may give you access

Abstract

Solution-processed ethanol tungsten disulfide and its doping in poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (${\rm PEDOT}{:}{\rm PSS} + {\rm WS}_2$) for tailoring hole injection in near ultraviolet organic light-emitting diodes (NUV OLEDs) are investigated in detail. Raman spectrum, scanning electron microscopy, atomic force microscopy, x-ray/ultraviolet photoelectron spectroscopy, and impedance spectroscopy measurements show that ${{\rm WS} _2}$ and its composites have superior film morphology and exceptional electronic properties. Using 2-(4-biphenyl)-5-(4-tert-butylphenyl)-1,3,4-oxadiazole as the emitter and ${\rm PEDOT}{:}{\rm PSS} + {\rm WS}_2$ as the hole injection layer, the NUV OLED produces short-wavelength emission peaking at 404 nm and full-width at half-maximum of 53 nm. The device also gives maximum radiance of ${4.7}\;{{{\rm mW}/{\rm cm}}^2}$ and external quantum efficiency of 2.1%, which are superior to counterparts using ${\rm WS}_2$, UV-ozone-treated ${\rm WS}_2$, and PEDOT:PSS. The hole injection ability is enhanced by using ${\rm WS}_2$, UV-ozone-treated ${\rm WS}_2$, PEDOT:PSS, and ${\rm PEDOT}{:}{\rm PSS} + {\rm WS}_2$ in this order. The robust hole injection contributes to carrier balance and accounts for high device performance of the fabricated NUV OLEDs. Our results pave an alternative approach for advancing OLEDs and accelerating ${\rm WS}_2$ applications.

© 2021 Optical Society of America

Full Article  |  PDF Article
More Like This
Stable angular emission spectra in white organic light-emitting diodes using graphene/PEDOT:PSS composite electrode

Hyunsu Cho, Hyunkoo Lee, Jonghee Lee, Woo Jin Sung, Byoung-Hwa Kwon, Chul-Woong Joo, Jin-Wook Shin, Jun-Han Han, Jaehyun Moon, Jeong-Ik Lee, Seungmin Cho, and Nam Sung Cho
Opt. Express 25(9) 9734-9742 (2017)

Triple-stacked hole-selective layers for efficient solution-processable organic semiconducting devices

Yoon Ho Huh, O. Eun Kwon, and Byoungchoo Park
Opt. Express 23(11) A625-A639 (2015)

Supplementary Material (1)

NameDescription
Supplement 1       Supporting Information

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (6)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (1)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved