The effects of mixed electroluminescent (EL) polymer layer thickness on the single layer organic light emitting diode (OLED) performance

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Single layer OLEDs by using polymer poly(9,9-di-n-hexylfluorenyl-2,7-diyl) (PHF) mixed with organic salt tetrabutylammonium hexafluorophosphate (TBAPF 6) as the electroluminescent (EL) layer were fabricated. This paper reports the effects of variation of that EL layer thickness on the OLED performance. OLEDs performance are determined in terms of their turn-on voltage and luminance. The PHF:TBAPF6 EL layers with weight ratios of 100:20 were used and prepared by spin coating technique using chloroform as solvent. The thickness being incremented by adding layer-by-layer during the spin coating process. The thickness effects to the EL layer surface roughness were also studied. The best device performance was given by the thinnest layer which also has the lowest average surface roughness (0.557 nm), it gave the lowest turn-on voltage (7.0 V) and highest maximum luminance (9.12 cd/m2 at 10 V). It emitted greenish-yellow color at it maximum luminance with CIE coordinate (0.30, 0.55).

Original languageEnglish
Title of host publication2012 10th IEEE International Conference on Semiconductor Electronics, ICSE 2012 - Proceedings
Pages759-762
Number of pages4
DOIs
Publication statusPublished - 2012
Event2012 10th IEEE International Conference on Semiconductor Electronics, ICSE 2012 - Kuala Lumpur
Duration: 19 Sep 201221 Sep 2012

Other

Other2012 10th IEEE International Conference on Semiconductor Electronics, ICSE 2012
CityKuala Lumpur
Period19/9/1221/9/12

Fingerprint

Organic light emitting diodes (OLED)
Luminance
Spin coating
Polymers
Surface roughness
Coating techniques
Electric potential
Chlorine compounds
Salts
Color

ASJC Scopus subject areas

  • Hardware and Architecture
  • Electrical and Electronic Engineering

Cite this

The effects of mixed electroluminescent (EL) polymer layer thickness on the single layer organic light emitting diode (OLED) performance. / Mokhtar, Mohd Shahrul Akram Mohd; Yap, Chi Chin; Mat Salleh, Muhamad; Akrajas, Ali Umar; Yahaya, Muhammad.

2012 10th IEEE International Conference on Semiconductor Electronics, ICSE 2012 - Proceedings. 2012. p. 759-762 6417254.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Mokhtar, MSAM, Yap, CC, Mat Salleh, M, Akrajas, AU & Yahaya, M 2012, The effects of mixed electroluminescent (EL) polymer layer thickness on the single layer organic light emitting diode (OLED) performance. in 2012 10th IEEE International Conference on Semiconductor Electronics, ICSE 2012 - Proceedings., 6417254, pp. 759-762, 2012 10th IEEE International Conference on Semiconductor Electronics, ICSE 2012, Kuala Lumpur, 19/9/12. https://doi.org/10.1109/SMElec.2012.6417254
Mokhtar, Mohd Shahrul Akram Mohd ; Yap, Chi Chin ; Mat Salleh, Muhamad ; Akrajas, Ali Umar ; Yahaya, Muhammad. / The effects of mixed electroluminescent (EL) polymer layer thickness on the single layer organic light emitting diode (OLED) performance. 2012 10th IEEE International Conference on Semiconductor Electronics, ICSE 2012 - Proceedings. 2012. pp. 759-762
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AU - Akrajas, Ali Umar

AU - Yahaya, Muhammad

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