Performance of a polymeric light-emitting diode (PLED) using a ZnO film as an anode electrode

Yuhua Lee, S. H. Huang, J. F. Min, S. T. Lin, Wei-Yang Chou

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

An ion-beam sputtering technique was utilized in ZnO film deposition, and small and large ion-beam currents (Ib) of 10 and 30 mA, respectively, were used with the ion-beam voltage (Vb) kept constant at 600 V. To control the thin film's stoichiometry and, thus, its resistivity, we employed different oxygen flow rates (r) of 0, 0.2, 0.4, 0.6 and 1 sccm. For both I b = 10 and 30 mA, the resistivity increased and the carrier concentration decreased with increasing oxygen flow rates. When the carrier concentration dropped below 1020 cm-3, the performance of the PLED was degraded, and no illumination was given off when the concentration reached ∼1017 cm-3. The best device performance observed for the films made with Ib = 10 mA and 30 mA corresponded, respectively, to no oxygen flow rate and a small (0.2 sccm) flow rate. These two films showed a luminance of ∼1600 cd/m2 at 10 V. The turn-on voltage was 3.0 V for Ib = 10 mA and 4.5 V for Ib = 30 mA.

Original languageEnglish
Pages (from-to)943-948
Number of pages6
JournalJournal of the Korean Physical Society
Volume53
Issue number2 PART 1
Publication statusPublished - 2008 Aug

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anodes
light emitting diodes
ion beams
beam currents
electrodes
flow velocity
oxygen
electrical resistivity
electric potential
luminance
stoichiometry
sputtering
illumination
thin films

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Lee, Yuhua ; Huang, S. H. ; Min, J. F. ; Lin, S. T. ; Chou, Wei-Yang. / Performance of a polymeric light-emitting diode (PLED) using a ZnO film as an anode electrode. In: Journal of the Korean Physical Society. 2008 ; Vol. 53, No. 2 PART 1. pp. 943-948.
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Performance of a polymeric light-emitting diode (PLED) using a ZnO film as an anode electrode. / Lee, Yuhua; Huang, S. H.; Min, J. F.; Lin, S. T.; Chou, Wei-Yang.

In: Journal of the Korean Physical Society, Vol. 53, No. 2 PART 1, 08.2008, p. 943-948.

Research output: Contribution to journalArticle

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