Red electroluminescence and photoluminescence properties of a reduced porphyrin compound, tetraphenylchlorin

Sakakibara, Youichi; Okutsu, Satoshi; Enokida, Toshio; Tani, Tadaaki

doi:10.1016/s0040-6090(99)00976-1

Cited by 16 publications

(6 citation statements)

References 5 publications

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“…Numerous red fluorescence dyes have been synthesized and studied for fabricating an excellent red OLED, including pyran, chromene, and isophorene containing 4-(dicyanomethylene)-2-methyl-6-[4-(dimethylaminostyryl)-4H-pyran] (DCM) type red dyes [2][3][4][5][6][7][8][9][10][11][12], porphyrin-type macrocyclic red dyes [13][14][15], and squarylium dyes [16][17][18]. Among these red fluorescence dyes, DCM type dyes remain the most efficient material when applied for the red OLEDs, particularly for the dye namely (4-(dicyanomethylene)-2-t-butyl-6-(1,1,7,7-tetramethyljulolidyl-9-enyl)-4H-pyran) (DCJTB) [4,5].…”

Section: Introductionmentioning

confidence: 99%

Efficient fluorescent red, green, and blue organic light-emitting devices with a blue host of spirobifluorene derivative

et al. 2008

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Section: Introductionmentioning

confidence: 99%

Efficient fluorescent red, green, and blue organic light-emitting devices with a blue host of spirobifluorene derivative

et al. 2008

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“…[11][12][13][14][15] Saturated red EL was achieved using phosphorescent porphines such as tetraphenylporphine ͑TPP͒, tetraphenylchlorin ͑TPC͒, and derivatives of platinum ͑II͒ porphines ͑PtOEP, PtOx, and PtDPP͒. [16][17][18][19][20] The use of phosphorescent emitters increases the theoretical limit of the EL quantum efficiency by taking advantage of the higher production ratio of triplet to singlet excitons ͑3:1͒. PtOEP and PtOx-based devices show improved quantum efficiencies of 2.2% and 1.1%, respectively, at 100 A/m 2 .…”

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confidence: 99%

Organic light-emitting devices with saturated red emission using 6,13-diphenylpentacene

Picciolo

Murata

Kafafi

2001

Applied Physics Letters

121

107

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Organic electroluminescent devices with saturated red emission were developed using 6,13-diphenylpentacene (DPP) doped into tris(8-hydroxyquinolinato) aluminum III (Alq3). DPP exhibits a narrow emission spectrum giving rise to a saturated red peak, centered around 625 nm, with excellent chromaticity coordinates (x=0.63 and y=0.34) in accordance with the Commission Internationale de l’Eclairage. An absolute photoluminescence (PL) quantum yield (φPL) of ∼30% was measured for a composite film of 0.55 mol % of DPP doped into Alq3. An electroluminescence (EL) quantum efficiency of 1.3% at 100 A/m2, close to the estimated theoretical limit (1.5%), was measured for an unoptimized device structure that consists of an active emissive layer sandwiched between hole- and electron-transport layers. In addition, the EL quantum efficiency is constant or stable over a wide range of current densities (1–1000 A/m2) or luminance values (1–1000 cd/m2).

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“…Because the TFM-TSB mono-film is amorphous, it was probable that there are various TFM-TSB sites; some might form monomer-like sites and others might form aggregate-like sites (dimmer, trimer, etc.). These characteristics, broadband and red-shifted emission spectrum are usually observed for organic and polymer materials results from intermolecular interactions in the solid state and/or particular aggregation states (Kan et al 2003;Sakakibara et al 2000;Bulović et al 1998). Figure 2 shows the EL spectra and their Gaussian profile analysis for the single layer device with a 100 nm TFM-TSB which sandwiched between ITO anode and LiF/Al cathode at operating voltages of 18 (Fig.…”

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confidence: 92%

Small-molecular white organic light-emitting devices employing 2, 5, 2′, 5′-tetra (p-trifluoromethylstyryl)-biphenyl as single-emitting component

Duan

Chen

et al. 2008

Opt Quant Electron

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We demonstrate a promising single layer white light-emitting device using a dimeric trimeric phenylenvinylene derivative as emitting layer. The broad electroluminescence emission band is composed of blue component from singlet excited state of individual 2, 5, 2 , 5 -tetra ( p-trifluoromethylstyryl)-biphenyl molecule and long-wavelength electromer emission in electroluminescence. Therefore, white-light emission can also be obtained with a typical three-layer structure of ITO/NPB (50 nm)/TFM-TSB (50 nm)/Alq 3 (30 nm)/LiF/Al device. The maximum brightness of this device is 809 cd/m 2 at 217 mA/cm 2 and 13 V, and the maximum luminous efficiency is 1.49 cd/A at 11 mA/cm 2 and 8 V.Keywords Single-emitting component · White organic light emitting · Dimeric trimeric phenylenvinylene derivative · Electromer PACS 73.61.PH · 78.60.Fi White organic light emitting devices (WOLEDs) have been the focus of intense research due to their potential application as full-color displays, backlights for liquid crystal displays, and an alternative lighting source (Li and Shinar 2003;Cheon and Shinar 2002;Qin and Tao 2005). In general, to achieve white emission in OLEDs, two or more colors are required, i.e., a high energy emitter (blue light) and a relatively low-energy emitter (yellow/red light). Many techniques have been developed to achieve WOLEDs, including the mixing of

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Red electroluminescence and photoluminescence properties of a reduced porphyrin compound, tetraphenylchlorin

Cited by 16 publications

References 5 publications

Efficient fluorescent red, green, and blue organic light-emitting devices with a blue host of spirobifluorene derivative

Efficient fluorescent red, green, and blue organic light-emitting devices with a blue host of spirobifluorene derivative

Organic light-emitting devices with saturated red emission using 6,13-diphenylpentacene

Small-molecular white organic light-emitting devices employing 2, 5, 2′, 5′-tetra (p-trifluoromethylstyryl)-biphenyl as single-emitting component

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