P-108: High Performances of the Powder Electroluminescence Device using the Carbon Nanotubes

P-108: High Performances of the Powder Electroluminescence Device using the Carbon Nanotubes

The display characteristics of AC powder electroluminescence (EL) devices were improved by adopting nanomaterials, here single walled carbon nanotubes (CNTs). CNTs were shortened by the cryo‐crushing method in order to reduce unnecessary current bypath networks which might be formed by long pristine...

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Veröffentlicht in:SID International Symposium Digest of technical papers 2011-06, Vol.42 (1), p.1509-1511
Hauptverfasser: Yu, SeGi, Kim, Jin-Yong, Park, Shang Hyeun, Jeong, Taewon, Han, Intaek
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container_title SID International Symposium Digest of technical papers
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creator Yu, SeGi
Kim, Jin-Yong
Park, Shang Hyeun
Jeong, Taewon
Han, Intaek
description The display characteristics of AC powder electroluminescence (EL) devices were improved by adopting nanomaterials, here single walled carbon nanotubes (CNTs). CNTs were shortened by the cryo‐crushing method in order to reduce unnecessary current bypath networks which might be formed by long pristine CNTs. Two approaches utilizing CNTs were investigated—a CNT layer was inserted between an emitting layer and a dielectric layer, and CNT‐phosphor composite was used as an emitting layer. Both methods improved the brightness and current density of EL devices (20% brighter and 10% less current density than the reference device). This might be caused by the characteristics of nanomaterials, i.e., high local electric field near the end of nanomaterials and high surface to volume ratio.
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title P-108: High Performances of the Powder Electroluminescence Device using the Carbon Nanotubes
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