Investigations of solution-processed charge generation unit with low concentration of small molecule doped in p-type/HAT-CN6 for tandem OLED

N. A. Talik, K. H. Yeoh, C. Y B Ng, C. Y. Tan, Boon Kar Yap

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We investigated the charge generation and injection mechanism in solution processed charge generation unit (CGU) used in our high performance tandem organic light emitting diode (OLED) via capacitance-voltage (C-V) and current density-voltage (J-V) measurements. By doping 2 wt% of small molecule 1,1-bis-(4-bis(4-tolyl)-aminophenyl) cyclohexene (TAPC) into Poly (N-vinylcarbazole) (PVK) as p-type layer of the CGU, we obtained more than two folds improvement in the tandem device efficiency compared to single device. The performance improvement of the TAPC doped CGU could be attributed to low built-in potential, large vacuum level shift as well as high charge density for efficient charge generation.

Original languageEnglish
Pages (from-to)61-64
Number of pages4
JournalJournal of Luminescence
Volume169
DOIs
Publication statusPublished - 01 Jan 2016

Fingerprint

Organic light emitting diodes (OLED)
low concentrations
light emitting diodes
Light
Equipment and Supplies
Molecules
Electric potential
Vacuum
Charge density
molecules
Capacitance
Current density
Doping (additives)
Injections
electric potential
capacitance
cyclohexene
injection
current density
vacuum

All Science Journal Classification (ASJC) codes

  • Biophysics
  • Chemistry(all)
  • Atomic and Molecular Physics, and Optics
  • Biochemistry
  • Condensed Matter Physics

Cite this

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abstract = "We investigated the charge generation and injection mechanism in solution processed charge generation unit (CGU) used in our high performance tandem organic light emitting diode (OLED) via capacitance-voltage (C-V) and current density-voltage (J-V) measurements. By doping 2 wt{\%} of small molecule 1,1-bis-(4-bis(4-tolyl)-aminophenyl) cyclohexene (TAPC) into Poly (N-vinylcarbazole) (PVK) as p-type layer of the CGU, we obtained more than two folds improvement in the tandem device efficiency compared to single device. The performance improvement of the TAPC doped CGU could be attributed to low built-in potential, large vacuum level shift as well as high charge density for efficient charge generation.",
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Investigations of solution-processed charge generation unit with low concentration of small molecule doped in p-type/HAT-CN6 for tandem OLED. / Talik, N. A.; Yeoh, K. H.; Ng, C. Y B; Tan, C. Y.; Yap, Boon Kar.

In: Journal of Luminescence, Vol. 169, 01.01.2016, p. 61-64.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Investigations of solution-processed charge generation unit with low concentration of small molecule doped in p-type/HAT-CN6 for tandem OLED

AU - Talik, N. A.

AU - Yeoh, K. H.

AU - Ng, C. Y B

AU - Tan, C. Y.

AU - Yap, Boon Kar

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AB - We investigated the charge generation and injection mechanism in solution processed charge generation unit (CGU) used in our high performance tandem organic light emitting diode (OLED) via capacitance-voltage (C-V) and current density-voltage (J-V) measurements. By doping 2 wt% of small molecule 1,1-bis-(4-bis(4-tolyl)-aminophenyl) cyclohexene (TAPC) into Poly (N-vinylcarbazole) (PVK) as p-type layer of the CGU, we obtained more than two folds improvement in the tandem device efficiency compared to single device. The performance improvement of the TAPC doped CGU could be attributed to low built-in potential, large vacuum level shift as well as high charge density for efficient charge generation.

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