Organic, polymer, and organic/inorganic hybrid light-emitting devices based on phosphorescent fluorinated platinum(II) porphyrin

Efficient and highly saturated red organic, polymer and white organic/inorganic hybrid light-emitting devices (OLEDs, PLEDs and OIHLEDs) employing platinum(II) meso-tetrakis(pentafluorophenyl) porphyrin (PtF20TPP) are reported. The presence of fluorine atoms on the periphery of porphyrin ring suppresses the self-quenching behavior and improves the electron mobility, solubility, and stability of PtF20TPP. Both the PLEDs and OLEDs give a red emission with a peak maximum at 650 nm (full width at half maximum = 26 nm) and a shoulder at 705 nm. The maximum external quantum efficiency (hext), luminous efficiency (hL), and brightness of the 2.1 wt% PtF20TPP-doped PLED are 3.2%, 1.1 cd/A, 350 cd/m2 respectively; while those for the 4.0 wt% PtF20TPP-doped OLEDs are 5.1%, 1.5 cd/A, 890 cd/m2. The efficiency and luminous power efficiency (hP) of luminescence conversion of white OIHLEDs based on near-ultraviolet (n-UV) light GaN-LEDs as light source, tris-(8-hydroxyquinolato) aluminum (Alq3) as green emitter, and PtF20TPP as red emitter are 3.3% and 10 lm/W, respectively.

[1]  M. Yamada,et al.  Red-Enhanced White-Light-Emitting Diode Using a New Red Phosphor , 2003 .

[2]  Fow-Sen Choa,et al.  The process and efficiency of ultraviolet generation from gallium nitride blue light emitting diodes , 1997 .

[3]  A. Heeger,et al.  Gallium nitride/conjugated polymer hybrid light emitting diodes: Performance and lifetime , 1998 .

[4]  Daniel Moses,et al.  Red electrophosphorescence from polymer doped with iridium complex , 2002 .

[5]  R. N. Marks,et al.  Light-emitting diodes based on conjugated polymers , 1990, Nature.

[6]  Mark E. Thompson,et al.  High-performance polymer light-emitting diodes doped with a red phosphorescent iridium complex , 2002 .

[7]  Stephen R. Forrest,et al.  Operating lifetime of phosphorescent organic light emitting devices , 2000 .

[8]  N. Peyghambarian,et al.  High-efficiency organic electrophophorescent devices through balance of charge injection , 2002 .

[9]  N. Bojarczuk,et al.  Multicolored light emitters on silicon substrates , 1998 .

[10]  M. Baldo,et al.  Efficient, Saturated Red Organic Light Emitting Devices Based on Phosphorescent Platinum(II) Porphyrins , 1999 .

[11]  R. N. Marks,et al.  Light-emitting diodes based on conjugated polymers , 1990, Nature.

[12]  Vojislav I. Srdanov,et al.  Narrow Bandwidth Luminescence from Blends with Energy Transfer from Semiconducting Conjugated Polymers to Europium Complexes , 1999 .

[13]  Stephen R. Forrest,et al.  Improved energy transfer in electrophosphorescent devices , 1999 .

[14]  Jang‐Joo Kim,et al.  Highly efficient polymer phosphorescent light emitting devices , 2001 .

[15]  P. Schlotter,et al.  Luminescence conversion of blue light emitting diodes , 1997 .

[16]  R. Wagner,et al.  Investigation of the synthesis of ortho-substituted tetraphenylporphyrins , 1989 .

[17]  Michael Kunzer,et al.  Fabrication and characterization of GaN/InGaN/AlGaN double heterostructure LEDs and their application in luminescence conversion LEDs , 1999 .

[18]  Naoki Kobayashi,et al.  Efficient and high-power AlGaN-based ultraviolet light-emitting diode grown on bulk GaN , 2001 .

[19]  Stephen R. Forrest,et al.  High-efficiency red electrophosphorescence devices , 2001 .

[20]  M. Thompson,et al.  Cyclometalated Ir complexes in polymer organic light-emitting devices , 2002 .

[21]  C. Che,et al.  [(C^N^N)Pt(C≡C)nR] (HC^N^N = 6-aryl-2,2′-bipyridine, n = 1-4, R = aryl, SiMe3) as a new class of light-emitting materials and their applications in electrophosphorescent devices , 2002 .

[22]  S. Forrest,et al.  Highly efficient phosphorescent emission from organic electroluminescent devices , 1998, Nature.

[23]  Michael R. Krames,et al.  High-power phosphor-converted light-emitting diodes based on III-Nitrides , 2002 .

[24]  C.-H. Chen,et al.  Recent progress of molecular organic electroluminescent materials and devices , 2002 .

[25]  Katsutoshi Nagai,et al.  Bright red light‐emitting organic electroluminescent devices having a europium complex as an emitter , 1994 .

[26]  A. Jen,et al.  Red-emitting electroluminescent devices based on osmium-complexes-doped blend of poly(vinylnaphthalene) and 1,3,4-oxadiazole derivative , 2002 .

[27]  Richard H. Friend,et al.  Harvesting Singlet and Triplet Energy in Polymer LEDs , 1999 .

[28]  X. Jing,et al.  Oxadiazole-Functionalized Europium(III) β-Diketonate Complex for Efficient Red Electroluminescence , 2003 .

[29]  Donal D. C. Bradley,et al.  Origin of electrophosphorescence from a doped polymer light emitting diode , 2001 .

[30]  C. Tang,et al.  Organic Electroluminescent Diodes , 1987 .

[31]  Shui-Tong Lee,et al.  Efficient red electroluminescence from organic devices using dye-doped rare earth complexes , 2003 .

[32]  S.J. Chang,et al.  White-light emission from near UV InGaN-GaN LED chip precoated with blue/green/red phosphors , 2003, IEEE Photonics Technology Letters.

[33]  Peter I. Djurovich,et al.  Molecularly doped polymer light emitting diodes utilizing phosphorescent Pt(II) and Ir(III) dopants , 2001 .

[34]  Yuguang Ma,et al.  Electroluminescence from triplet metal—ligand charge-transfer excited state of transition metal complexes , 1998 .

[35]  Yang Yang,et al.  Highly efficient electrophosphorescent polymer light-emitting devices , 2000 .

[36]  U. Scherf,et al.  Energy transfer to porphyrin derivative dopants in polymer light-emitting diodes , 2002 .

[37]  Yang Yang,et al.  Degradation mechanism of phosphorescent-dye-doped polymer light-emitting diodes , 2001 .

[38]  S. Forrest,et al.  Nearly 100% internal phosphorescence efficiency in an organic light emitting device , 2001 .

[39]  Alan J. Heeger,et al.  White light from InGaN/conjugated polymer hybrid light-emitting diodes , 1997 .

[40]  Takashi Jimbo,et al.  Characteristics of InGaN/AlGaN light-emitting diodes on sapphire substrates , 1997 .

[41]  Jacques Tardy,et al.  White emission from organic and inorganic dyes dispersed polymers excited by GaN blue LEDs , 1999, Optics & Photonics.

[42]  A. Jen,et al.  Red electrophosphorescence from osmium complexes , 2002 .