A High Performance Nondoped Blue Organic Light-Emitting Device Based on a Diphenylfluoranthene-Substituted Fluorene Derivative

Tong, Qing‐Xiao; Lai, Shiu-Lun; Chan, Mei‐Yee; Zhou, Yang; Kwong, Hoi‐Lun; Lee, Chun‐Sing; Lee, Shuit‐Tong; Lee, Tae‐Woo; Noh, Taeyong; Kwon, Ohyun

doi:10.1021/jp810305b

Cited by 41 publications

(25 citation statements)

References 10 publications

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“… Energy‐level diagram of the multilayer devices: HOMO and LUMO levels of DPyPA and Alq 3 were measured by CV, while those of NPB, ADN, PADN, DPDT, ITO, and LiF/Al are previously reported values 13…”

Section: Resultsmentioning

confidence: 99%

A Pyridine‐Containing Anthracene Derivative with High Electron and Hole Mobilities for Highly Efficient and Stable Fluorescent Organic Light‐Emitting Diodes

Sun

Duan

Zhang

et al. 2011

Adv Funct Materials

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A pyridine-containing anthracene derivative, 9,10-bis(3-(pyridin-3-yl)phenyl) anthracene (DPyPA), which comprehensively outperforms the widely used electron-transport material (ETM), tris(8-quinolinolato) aluminum (Alq 3 ), is synthesized. DPyPA exhibits ambipolar transport properties, with both electron and hole mobilities of around 10 − 3 cm − 2 V − 1 s − 1 ; about two orders of magnitude higher than that of Alq 3 . The nitrogen atom in the pyridine ring of DPyPA coordinates to lithium cations, which leads to effi cient electron injection when LiF/Al is used as the cathode. Electrochemical measurements demonstrate that both the cations and anions of DPyPA are stable, which may improve the stability of devices based on DPyPA. Red-emitting, green-emitting, and blue-emitting fl uorescent organic light emitting diodes with DPyPA as the ETM display lower turn-on voltages, higher effi ciencies, and stronger luminance than the devices with Alq 3 as the ETM. The power effi ciencies of the devices based on DPyPA are greater by 80-140% relative to those of the Alq 3 -based devices. The improved performance of these devices is attributed to the increased carrier balance. In addition, the device employing DPyPA as the ETM possesses excellent stability: the half-life of the DPyPA-based device is 67 000 h-seven times longer than that of the Alq 3 -based device-for an initial luminance of 5000 cd m − 2 .

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Section: Resultsmentioning

confidence: 99%

A Pyridine‐Containing Anthracene Derivative with High Electron and Hole Mobilities for Highly Efficient and Stable Fluorescent Organic Light‐Emitting Diodes

Sun

Duan

Zhang

et al. 2011

Adv Funct Materials

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“…Table 2 compares the device performance of the present PyTPAand TPyPA-based devices with those of other recently reported blue OLEDs. 2,[4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] Remarkably, the PyTPA-based device shows comparable or even better performance than other deep-blue OLEDs, in terms of efficiencies, driving voltage (also V turn-on ), and color purity. More importantly, it exhibited a saturated blue color with CIE of (0.14, 0.11), that can significantly reduce the power consumption of full-color displays.…”

Section: Resultsmentioning

confidence: 99%

Distinct electroluminescent properties of triphenylamine derivatives in blue organic light-emitting devices

et al. 2011

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“…The spectroscopic analyses and purity of DSX-IF were in perfect accordance with our previous work. [56] 9',9',18',18'-Tetraoctyl-9',18'-dihydrodispiro(xanthene-9,6'-benzo- 4,4',4'',4'''- (9,9,18,9,15, (1) X-ray analysis: Crystal data of DSX-LPP are presented below. The crystal was picked up with a cryoloop and then frozen at 100 K under a stream of dry N 2 on a APEX II Brucker AXS diffractometer for X-ray data collection (Mo Ka radiation, l = 0.71073 ).…”

Section: Methodsmentioning

confidence: 99%

Incorporation of Spiroxanthene Units in Blue‐Emitting Oligophenylene Frameworks: A New Molecular Design for OLED Applications

Poriel

Cocherel

Rault‐Berthelot

et al. 2011

Chemistry A European J

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We report herein the incorporation of xanthenyl units into two extended π-conjugated phenylene systems, namely indenofluorene and pentaphenylene. Thus, dispiroxanthene-indenofluorene (DSX-IF) and dispiroxanthene-ladderpentaphenylene (DSX-LPP) have been designed and synthesized through short and efficient synthetic approaches. These two molecules possess a 3π-2-spiro architecture (3π-systems/2-spiro bridges), in which two xanthenyl cores are spirolinked to a π-conjugated backbone either indenofluorene for DSX-IF or pentaphenylene for DSX-LPP. The structural, electrochemical, and photophysical properties of these blue/violet emitters have been studied in detail and compared to those of their 'all carbon' analogues with spirofluorenyl cores instead of spiroxanthenyl cores, namely dispirofluorene-indenofluorene (DSF-IF) and dispirofluorene-ladderpentaphenylene (DSF-LPP), previously reported in the literature. Finally, the application of DSX-IF and DSX-LPP as new light-emitting materials in nondoped organic light emitting diodes is reported. A detailed optical study of the different electroluminescence spectra is notably presented, with an emphasis 1) on the origin of the low-energy emission band observed in the case of DSX-LPP and 2) on the unexpected optical contribution of the well-known hole-transporting-layer NPB (N,N'-di(naphtyl)-N,N'-diphenyl(1,1'-biphenyl)-4,4'-diamine).

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A High Performance Nondoped Blue Organic Light-Emitting Device Based on a Diphenylfluoranthene-Substituted Fluorene Derivative

Cited by 41 publications

References 10 publications

A Pyridine‐Containing Anthracene Derivative with High Electron and Hole Mobilities for Highly Efficient and Stable Fluorescent Organic Light‐Emitting Diodes

A Pyridine‐Containing Anthracene Derivative with High Electron and Hole Mobilities for Highly Efficient and Stable Fluorescent Organic Light‐Emitting Diodes

Distinct electroluminescent properties of triphenylamine derivatives in blue organic light-emitting devices

Incorporation of Spiroxanthene Units in Blue‐Emitting Oligophenylene Frameworks: A New Molecular Design for OLED Applications

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