High-efficiency small-molecule-based organic light emitting devices with solution processes and oxadiazole-based electron transport materials

Yung Ting Chang; Jan Kai Chang; Yi Ting Lee; Po Sheng Wang; Jhao Lin Wu; Che Chang Hsu; I. Wen Wu; Wei Hsuan Tseng; Tun Wen Pi; Chin Ti Chen; Chih I. Wu

doi:10.1021/am402504g

High-efficiency small-molecule-based organic light emitting devices with solution processes and oxadiazole-based electron transport materials

Yung Ting Chang, Jan Kai Chang, Yi Ting Lee, Po Sheng Wang, Jhao Lin Wu, Che Chang Hsu, I. Wen Wu, Wei Hsuan Tseng, Tun Wen Pi, Chin Ti Chen, Chih I. Wu

Research output: Contribution to journal › Article › peer-review

25 Citations (Scopus)

Abstract

We demonstrate high-efficiency small-molecule-based white phosphorescent organic light emitting diodes (PHOLEDs) by single-active-layer solution-based processes with the current efficiency of 17.3 cdA^-1 and maximum luminous efficiency of 8.86 lmW^-1 at a current density of 1 mA cm^-2. The small-molecule based emitting layers are codoped with blue and orange phosphorescent dyes. We show that the presence of CsF/Al at cathodes not only improves electron transport in oxadiazole-containing electron transport layers (ETLs), but also facilitates electron injection through the reacted oxadiazole moiety to reduce interface resistance, which results in the enhancement of current efficiency. By selecting oxadiazole-based materials as ETLs with proper electron injection layer (EIL)/cathode structures, the brightness and efficiency of white PHOLEDs are significantly improved.

Original language	English
Pages (from-to)	10614-10622
Number of pages	9
Journal	ACS Applied Materials and Interfaces
Volume	5
Issue number	21
DOIs	https://doi.org/10.1021/am402504g
Publication status	Published - Nov 13 2013
Externally published	Yes

All Science Journal Classification (ASJC) codes

Materials Science(all)

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10.1021/am402504g

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Chang, Y. T., Chang, J. K., Lee, Y. T., Wang, P. S., Wu, J. L., Hsu, C. C., Wu, I. W., Tseng, W. H., Pi, T. W., Chen, C. T., & Wu, C. I. (2013). High-efficiency small-molecule-based organic light emitting devices with solution processes and oxadiazole-based electron transport materials. ACS Applied Materials and Interfaces, 5(21), 10614-10622. https://doi.org/10.1021/am402504g

@article{a30d75a7050447ad84bd5cf4e84892c9,

title = "High-efficiency small-molecule-based organic light emitting devices with solution processes and oxadiazole-based electron transport materials",

abstract = "We demonstrate high-efficiency small-molecule-based white phosphorescent organic light emitting diodes (PHOLEDs) by single-active-layer solution-based processes with the current efficiency of 17.3 cdA-1 and maximum luminous efficiency of 8.86 lmW-1 at a current density of 1 mA cm-2. The small-molecule based emitting layers are codoped with blue and orange phosphorescent dyes. We show that the presence of CsF/Al at cathodes not only improves electron transport in oxadiazole-containing electron transport layers (ETLs), but also facilitates electron injection through the reacted oxadiazole moiety to reduce interface resistance, which results in the enhancement of current efficiency. By selecting oxadiazole-based materials as ETLs with proper electron injection layer (EIL)/cathode structures, the brightness and efficiency of white PHOLEDs are significantly improved.",

author = "Chang, {Yung Ting} and Chang, {Jan Kai} and Lee, {Yi Ting} and Wang, {Po Sheng} and Wu, {Jhao Lin} and Hsu, {Che Chang} and Wu, {I. Wen} and Tseng, {Wei Hsuan} and Pi, {Tun Wen} and Chen, {Chin Ti} and Wu, {Chih I.}",

year = "2013",

month = nov,

day = "13",

doi = "10.1021/am402504g",

language = "English",

volume = "5",

pages = "10614--10622",

journal = "ACS Applied Materials and Interfaces",

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TY - JOUR

T1 - High-efficiency small-molecule-based organic light emitting devices with solution processes and oxadiazole-based electron transport materials

AU - Chang, Yung Ting

AU - Chang, Jan Kai

AU - Lee, Yi Ting

AU - Wang, Po Sheng

AU - Wu, Jhao Lin

AU - Hsu, Che Chang

AU - Wu, I. Wen

AU - Tseng, Wei Hsuan

AU - Pi, Tun Wen

AU - Chen, Chin Ti

AU - Wu, Chih I.

PY - 2013/11/13

Y1 - 2013/11/13

N2 - We demonstrate high-efficiency small-molecule-based white phosphorescent organic light emitting diodes (PHOLEDs) by single-active-layer solution-based processes with the current efficiency of 17.3 cdA-1 and maximum luminous efficiency of 8.86 lmW-1 at a current density of 1 mA cm-2. The small-molecule based emitting layers are codoped with blue and orange phosphorescent dyes. We show that the presence of CsF/Al at cathodes not only improves electron transport in oxadiazole-containing electron transport layers (ETLs), but also facilitates electron injection through the reacted oxadiazole moiety to reduce interface resistance, which results in the enhancement of current efficiency. By selecting oxadiazole-based materials as ETLs with proper electron injection layer (EIL)/cathode structures, the brightness and efficiency of white PHOLEDs are significantly improved.

AB - We demonstrate high-efficiency small-molecule-based white phosphorescent organic light emitting diodes (PHOLEDs) by single-active-layer solution-based processes with the current efficiency of 17.3 cdA-1 and maximum luminous efficiency of 8.86 lmW-1 at a current density of 1 mA cm-2. The small-molecule based emitting layers are codoped with blue and orange phosphorescent dyes. We show that the presence of CsF/Al at cathodes not only improves electron transport in oxadiazole-containing electron transport layers (ETLs), but also facilitates electron injection through the reacted oxadiazole moiety to reduce interface resistance, which results in the enhancement of current efficiency. By selecting oxadiazole-based materials as ETLs with proper electron injection layer (EIL)/cathode structures, the brightness and efficiency of white PHOLEDs are significantly improved.

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DO - 10.1021/am402504g

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JO - ACS Applied Materials and Interfaces

JF - ACS Applied Materials and Interfaces

IS - 21

ER -

High-efficiency small-molecule-based organic light emitting devices with solution processes and oxadiazole-based electron transport materials

Abstract

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