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Xia L, Xue Y, Xiong K, et al. Highly Improved Efficiency of Deep-Blue Fluorescent Polymer Light-Emitting Device Based on a Novel Hole Interface Modifier with 1,3,5-Triazine Core. ACS Appl Mater Interfaces. 2015;7(48):26405-13doi: 10.1021/acsami.5b06068.
Xia, L., Xue, Y., Xiong, K., Cai, C., Peng, Z., Wu, Y., Li, Y., Miao, J., Chen, D., Hu, Z., Wang, J., Peng, X., Mo, Y., & Hou, L. (2015). Highly Improved Efficiency of Deep-Blue Fluorescent Polymer Light-Emitting Device Based on a Novel Hole Interface Modifier with 1,3,5-Triazine Core. ACS applied materials & interfaces, 7(48), 26405-13. https://doi.org/10.1021/acsami.5b06068
Xia, Lianpeng, et al. "Highly Improved Efficiency of Deep-Blue Fluorescent Polymer Light-Emitting Device Based on a Novel Hole Interface Modifier with 1,3,5-Triazine Core." ACS applied materials & interfaces vol. 7,48 (2015): 26405-13. doi: https://doi.org/10.1021/acsami.5b06068
Xia L, Xue Y, Xiong K, Cai C, Peng Z, Wu Y, Li Y, Miao J, Chen D, Hu Z, Wang J, Peng X, Mo Y, Hou L. Highly Improved Efficiency of Deep-Blue Fluorescent Polymer Light-Emitting Device Based on a Novel Hole Interface Modifier with 1,3,5-Triazine Core. ACS Appl Mater Interfaces. 2015 Dec 09;7(48):26405-13. doi: 10.1021/acsami.5b06068. Epub 2015 Nov 24. PMID: 26422296.
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ACS Appl Mater Interfaces. 2015 Dec 09;7(48):26405-13. doi: 10.1021/acsami.5b06068. Epub 2015 Nov 24.

Highly Improved Efficiency of Deep-Blue Fluorescent Polymer Light-Emitting Device Based on a Novel Hole Interface Modifier with 1,3,5-Triazine Core.

ACS applied materials & interfaces

Lianpeng Xia, Yuyuan Xue, Kang Xiong, Chaosheng Cai, Zuosheng Peng, Ying Wu, Yuan Li, Jingsheng Miao, Dongcheng Chen, Zhanhao Hu, Jianbin Wang, Xiaobin Peng, Yueqi Mo, Lintao Hou

Affiliations

  1. Siyuan Laboratory, Department of Physics, Jinan University , Guangzhou 510632, P.R. China.
  2. School of Chemistry and Chemical Engineering, South China University of Technology , Guangzhou 510640, P.R. China.
  3. Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology , Guangzhou 510640, P.R. China.

PMID: 26422296 DOI: 10.1021/acsami.5b06068

Abstract

We present an investigation of deep-blue fluorescent polymer light-emitting diodes (PLEDs) with a novel functional 1,3,5-triazine core material (HQTZ) sandwiched between poly(3,4-ethylene dioxythiophene):poly(styrene sulfonic acid) layer and poly(vinylcarbazole) layer as a hole injection layer (HIL) without interface intermixing. Ultraviolet photoemission spectroscopy and Kelvin probe measurements were carried out to determine the change of anode work function influenced by the HQTZ modifier. The thin HQTZ layer can efficiently maximize the charge injection from anode to blue emitter and simultaneously enhance the hole mobility of HILs. The deep-blue device performance is remarkably improved with the maximum luminous efficiency of 4.50 cd/A enhanced by 80% and the maximum quantum efficiency of 4.93%, which is 1.8-fold higher than that of the conventional device without HQTZ layer, including a lower turn-on voltage of 3.7 V and comparable Commission Internationale de L'Eclairage coordinates of (0.16, 0.09). It is the highest efficiency ever reported to date for solution-processed deep-blue PLEDs based on the device structure of ITO/HILs/poly(9,9-dialkoxyphenyl-2,7-silafluorene)/CsF/AL. The results indicate that HQTZ based on 1,3,5-triazine core can be a promising candidate of interfacial materials for deep-blue fluorescent PLEDs.

Keywords: 1,3,5-triazine core; charge balance; deep-blue; fluorescent polymer light-emitting diodes; hole injection layer

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