TITLE

Transient reverse current phenomenon in a p-n heterojunction comprised of poly(3,4-ethylene-dioxythiophene):poly(styrene-sulfonate) and ZnO nanowall

AUTHOR(S)
Jongsun Maeng; Minseok Jo; Seok-Ju Kang; Min-Ki Kwon; Gunho Jo; Tae-Wook Kim; Jaeduck Seo; Hyunsang Hwang; Dong-Yu Kim; Seong-Ju Park; Takhee Lee
PUB. DATE
September 2008
SOURCE
Applied Physics Letters;9/22/2008, Vol. 93 Issue 12, p123109
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We report the characteristics of a p-n heterojunction diode comprised of a poly(3,4-ethylene-dioxythiophene):poly(styrene-sulfonate) (PEDOT:PSS) as the hole-conducting p-type polymer and n-type ZnO nanowall networks. ZnO nanowall networks were synthesized on a GaN/sapphire substrate without metal catalyst using hot-wall type metal organic chemical vapor deposition. The p-n heterojunction diodes of PEDOT:PSS/ZnO nanowall exhibited a space charge limited current phenomena at forward bias and a transient reverse current recovery when a sudden reverse bias was applied from the forward bias condition. The minority carrier lifetime was estimated to be ∼2.5 μs.
ACCESSION #
34647404

 

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