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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/15334
Title: Highly efficient deep-blue organic light emitting diode with a carbazole based fluorescent emitter
Authors: Sahoo S.
Dubey D.K.
Singh M.
Joseph V.
Thomas K.R.J.
Jou J.-H.
Published in: Japanese Journal of Applied Physics
Abstract: High efficiency deep-blue emission is essential to realize energy-saving, high-quality display and lighting applications. We demonstrate here a deep-blue organic light emitting diode using a novel carbazole based fluorescent emitter 7-[4-(diphenylamino)phenyl]-9-(2-ethylhexyl)-9H-carbazole-2-carbonitrile (JV234). The solution processed resultant device shows a maximum luminance above 1,750 cdm-2 and CIE coordinates (0.15, 0.06) with a 1.3lmW-1 power efficiency, 2.0cd A-1 current efficiency, and 4.1% external quantum efficiency at 100cdm-2. The resulting deep-blue emission enables a greater than 100% color saturation. The high efficiency may be attributed to the effective host-to-guest energy transfer, suitable device architecture facilitating balanced carrier injection and low doping concentration preventing efficiency roll-off caused by concentration quenching. © 2018 The Japan Society of Applied Physics.
Citation: Japanese Journal of Applied Physics, (2018)
URI: https://doi.org/10.7567/JJAP.57.04FL08
http://repository.iitr.ac.in/handle/123456789/15334
Issue Date: 2018
Publisher: Japan Society of Applied Physics
ISSN: 214922
Author Scopus IDs: 56982461100
57193009616
57203297295
57198421158
57203389297
35083609400
Author Affiliations: Sahoo, S., Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan
Dubey, D.K., Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan
Singh, M., Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan
Joseph, V., Organic Materials Laboratory, Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, 247667, India
Thomas, K.R.J., Organic Materials Laboratory, Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, 247667, India
Jou, J.-H., Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan
Funding Details: The authors would like to acknowledge the support from the Energy Fund of Ministry of Economics Affairs and Ministry of Science and Technology, Taiwan. This work was financially supported in part by Grants MEA 104-EC-17-A-07-S3-012, MOST 105-2119-M-007-012.
Appears in Collections:Conference Publications [CY]

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