Diamond-like carbon as a buffer layer in polymeric electroluminescent device

Sang Hun Choi, Soon Moon Jeong, Won Hoe Koo, Sung Jin Jo, Hong Koo Baik, Se Jong Lee, Kie Moon Song, Dong Won Han

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Diamond-like carbon (DLC) layer was deposited by the Cs+ ion sputtered negative ion deposition technique between hole transport layer and indium tin oxide (ITO) anode for polymeric electroluminescent device. An acidic poly(styrene sulfonate)-doped poly(3,4-ethylene dioxythiophene):poly- (styrenesulphonic acid) (PEDOT:PSS) solution acting as a hole transporting material etches the ITO surface and the PEDOT:PSS/ITO interface is not stable. X-ray photoelectron spectroscopy and Rutherford backscattering spectrometry have been used to measure the indium contamination in the organic layers such as PEDOT:PSS and poly[2-methoxy-5-(2′-ethyl-hexyloxy)-1,4-phenylene vinylene]. From the result, it was found that the DLC buffer layer protects ITO surface from acidic PEDOT:PSS solution and restrains the indium diffusion into organic layer. The device with the DLC layer also has electroluminescent efficiency by almost 2 times in the polymeric electroluminescent device compared with the device without diamond-like carbon layer.

Original languageEnglish
Pages (from-to)351-357
Number of pages7
JournalThin Solid Films
Volume483
Issue number1-2
DOIs
Publication statusPublished - 2005 Jul 1

Fingerprint

Luminescent devices
Diamond
Buffer layers
Indium
Diamonds
Carbon
buffers
diamonds
Tin oxides
Acids
carbon
Ethylene
indium oxides
tin oxides
ethylene
acids
Styrene
Rutherford backscattering spectroscopy
indium
Spectrometry

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

Cite this

Choi, S. H., Jeong, S. M., Koo, W. H., Jo, S. J., Baik, H. K., Lee, S. J., ... Han, D. W. (2005). Diamond-like carbon as a buffer layer in polymeric electroluminescent device. Thin Solid Films, 483(1-2), 351-357. https://doi.org/10.1016/j.tsf.2004.12.040
Choi, Sang Hun ; Jeong, Soon Moon ; Koo, Won Hoe ; Jo, Sung Jin ; Baik, Hong Koo ; Lee, Se Jong ; Song, Kie Moon ; Han, Dong Won. / Diamond-like carbon as a buffer layer in polymeric electroluminescent device. In: Thin Solid Films. 2005 ; Vol. 483, No. 1-2. pp. 351-357.
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Choi, SH, Jeong, SM, Koo, WH, Jo, SJ, Baik, HK, Lee, SJ, Song, KM & Han, DW 2005, 'Diamond-like carbon as a buffer layer in polymeric electroluminescent device', Thin Solid Films, vol. 483, no. 1-2, pp. 351-357. https://doi.org/10.1016/j.tsf.2004.12.040

Diamond-like carbon as a buffer layer in polymeric electroluminescent device. / Choi, Sang Hun; Jeong, Soon Moon; Koo, Won Hoe; Jo, Sung Jin; Baik, Hong Koo; Lee, Se Jong; Song, Kie Moon; Han, Dong Won.

In: Thin Solid Films, Vol. 483, No. 1-2, 01.07.2005, p. 351-357.

Research output: Contribution to journalArticle

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AU - Choi, Sang Hun

AU - Jeong, Soon Moon

AU - Koo, Won Hoe

AU - Jo, Sung Jin

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AU - Lee, Se Jong

AU - Song, Kie Moon

AU - Han, Dong Won

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AB - Diamond-like carbon (DLC) layer was deposited by the Cs+ ion sputtered negative ion deposition technique between hole transport layer and indium tin oxide (ITO) anode for polymeric electroluminescent device. An acidic poly(styrene sulfonate)-doped poly(3,4-ethylene dioxythiophene):poly- (styrenesulphonic acid) (PEDOT:PSS) solution acting as a hole transporting material etches the ITO surface and the PEDOT:PSS/ITO interface is not stable. X-ray photoelectron spectroscopy and Rutherford backscattering spectrometry have been used to measure the indium contamination in the organic layers such as PEDOT:PSS and poly[2-methoxy-5-(2′-ethyl-hexyloxy)-1,4-phenylene vinylene]. From the result, it was found that the DLC buffer layer protects ITO surface from acidic PEDOT:PSS solution and restrains the indium diffusion into organic layer. The device with the DLC layer also has electroluminescent efficiency by almost 2 times in the polymeric electroluminescent device compared with the device without diamond-like carbon layer.

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