Polymeric tandem organic light-emitting diodes using a self-organized interfacial layer

The authors have demonstrated efficient polymeric tandem organic light-emitting diodes (OLEDs) with a self-organized interfacial layer, which was formed by differences in chemical surface energy. Hydrophilic poly(styrene sulfonate)-doped poly(3,4-ethylene dioxythiophene) (PEDOT:PSS) was spin coated...

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Published in:Applied physics letters 2008-03, Vol.92 (10), p.103301-103301-3
Main Authors: Ryu, Seung Yoon, Kim, Jong Tae, Noh, Joo Hyon, Hwang, Byoung Har, Kim, Chang Su, Jo, Sung Jin, Hwang, Hyeon Seok, Kang, Seok Ju, Baik, Hong Koo, Lee, Chang Ho, Song, Seung Yong, Lee, Se Jong
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cited_by cdi_FETCH-LOGICAL-c319t-9f0a8b28a9545c6682bc5e2eebc19f35315d4f6678ba4303e103c63fb2385bda3
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container_end_page 103301-3
container_issue 10
container_start_page 103301
container_title Applied physics letters
container_volume 92
creator Ryu, Seung Yoon
Kim, Jong Tae
Noh, Joo Hyon
Hwang, Byoung Har
Kim, Chang Su
Jo, Sung Jin
Hwang, Hyeon Seok
Kang, Seok Ju
Baik, Hong Koo
Lee, Chang Ho
Song, Seung Yong
Lee, Se Jong
description The authors have demonstrated efficient polymeric tandem organic light-emitting diodes (OLEDs) with a self-organized interfacial layer, which was formed by differences in chemical surface energy. Hydrophilic poly(styrene sulfonate)-doped poly(3,4-ethylene dioxythiophene) (PEDOT:PSS) was spin coated onto the hydrophobic poly(9,9-dyoctilfluorene) (PFO) surface and a PEDOT:PSS bubble or dome was built as an interfacial layer. The barrier heights of PEDOT:PSS and PFO in the two-unit tandem OLED induced a charge accumulation at the interface in the heterojunction and thereby created exciton recombination at a much higher level than in the one-unit reference. This effect was confirmed in both the hole only and the electron only devices.
doi_str_mv 10.1063/1.2894072
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title Polymeric tandem organic light-emitting diodes using a self-organized interfacial layer
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