White light-emitting organic electroluminescent device based on a new orange organometallic iridium complexes

Tien-shou Shieh; Heh-lung Huang; Pey-ching Liu; Mei-Rurng Tseng; Jia-Ming Liu

doi:10.1117/12.730429

19 November 2007 White light-emitting organic electroluminescent device based on a new orange organometallic iridium complexes

Tien-shou Shieh, Heh-lung Huang, Pey-ching Liu, Mei-Rurng Tseng, Jia-Ming Liu

Author Affiliations +

Proceedings Volume 6655, Organic Light Emitting Materials and Devices XI; 66551G (2007) https://doi.org/10.1117/12.730429
Event: Photonic Devices + Applications, 2007, San Diego, California, United States

Abstract

We develop the white organic light-emitting diodes (WOLEDs) with a new orange electrophosphorescent emission, and the blue electrofluorescent or electrophosphorescent sensitizer. The new orange phosphorescent sensitizer is the thieno-pyridine framework organo-iridium complexes (PO-01). The blue phosphorsensitized electrofluorescent is 4,4'-Bis(9-ethyl-3-carbazovinylene)-1,1'- biphenyl (DSA) doped into 4,4'-Bis(2,2-diphenyl-ethen-1-yl) diphenyl (DPVBi). Beside, the blue phosphorescent sensitizer is Bis(3,5-difluoro-2-(2-pyridyl)phenyl- (2-carboxypyridyl)iridium (FirPic). The Device Type I of WOLED based on the PO-01 and the DSA doped into DPVBi has an efficiency of 5.7 lm/W (10.6Cd/A) at 500 Cd/m², a CIE coordinates of (0.33, 0.31), and a CRI of 71. However, the Device Type II of WOLED has an efficiency of 5.5 lm/W (10.3Cd/A) at 500 Cd/m² and a CIE coordinates of (0.30, 0.42), while the FirPic replaces the DPVBi doped with DSA. The spectra of the Device Type II and I both response insensitive to drive current. Nevertheless, the Device Type I relatively achieves a balanced whit emission with CIE coordinates of (0.33, 0.33). They are good suitability to use in OLED lighting and full-color LCD backlights.

Citation Download Citation

Tien-shou Shieh, Heh-lung Huang, Pey-ching Liu, Mei-Rurng Tseng, and Jia-Ming Liu "White light-emitting organic electroluminescent device based on a new orange organometallic iridium complexes", Proc. SPIE 6655, Organic Light Emitting Materials and Devices XI, 66551G (19 November 2007); https://doi.org/10.1117/12.730429

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