Implementation of graphene multilayer electrodes in quantum dot light-emitting devices

Wolff, Svenja; Jansen, Dennis; Terlinden, Hendrik; Kelestemur, YUSUF; Mertin, Wolfgang; Demir, Hilmi; Bacher, Gerd; Nannen, Ekaterina

doi:10.1007/s00339-015-9304-z

Implementation of graphene multilayer electrodes in quantum dot light-emitting devices

Atıf İçin Kopyala

Wolff S., Jansen D., Terlinden H., Kelestemur Y., Mertin W., Demir H. V., ...Daha Fazla

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, cilt.120, sa.3, ss.1197-1203, 2015 (SCI-Expanded)

Yayın Türü: Makale / Tam Makale
Cilt numarası: 120 Sayı: 3
Basım Tarihi: 2015
Doi Numarası: 10.1007/s00339-015-9304-z
Dergi Adı: APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
Sayfa Sayıları: ss.1197-1203
Orta Doğu Teknik Üniversitesi Adresli: Hayır

Özet

Graphene is a highly attractive candidate for implementation as electrodes in next-generation large-area optoelectronic devices thanks to its high electrical conductivity and high optical transparency. In this study, we show all-solution-processed quantum dot-based light-emitting devices (QD-LEDs) using graphene mono- and multilayers as transparent electrodes. Here, the effect of the number of graphene layers (up to three) on the QD-LEDs performance was studied. While the implementation of a second graphene layer was found to reduce the turn-on voltage from 2.6 to 1.8 V, a third graphene layer was observed to increase the turn-on voltage again, which is attributed to an increased roughness of the graphene layer stack.