Solution-processed white organic light-emitting devices based on small-molecule materials

Wang, Dongdong; Wu, Zhaoxin; Zhang, Xinwen; Wang, Dawei; Hou, Xun

doi:10.1016/j.jlumin.2009.09.010

Cited by 12 publications

(2 citation statements)

References 25 publications

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“…However, by inserting a 3 nm V 2 O 5 interlayer between the donor layer and anode, the device exhibits a significant improvement in power conversion efficiency (PCE) to 1.74%, with short-circuit current density ( SC ) 4.58 mA/cm 2 , open-circuit voltage ( OC ) 0.88 V, and fill factor (FF) 43.3%. Figure 1(b) shows the diagram of energy level in the rubrene/C 70 -based OSC [11,20,21]. Due to high work function, the thermally evaporated ultrathin film of V 2 O 5 has a more favorable energy level alignment for hole extraction compared to bare ITO [22].…”

Section: Resultsmentioning

confidence: 99%

Role of Vanadium Pentoxide Hole‐Extracting Nanolayer in Rubrene/C₇₀‐Based Small Molecule Organic Solar Cells

Zhan

Xie

Hou

et al. 2014

Journal of Nanomaterials

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Vanadium pentoxideV2O5was inserted between the donor layer and the anode as a hole-extracting nanolayer. Compared with devices without a hole-extracting layer, short-circuit current density (JSC), open-circuit voltage (VOC), fill factor (FF), and power conversion efficiency (PCE) of rubrene/C70-based heterojunction solar cells with 3 nm V2O5nanolayer are enhanced by 99%, 73%, 20%, and 310%, respectively. We found that V2O5interlayer can effectively suppress the contact resistance and increase the hole transport capability. The dependence of the device performance on V2O5layer thickness as well as fill factor on exciton dissociation and charge transport was also investigated in detail.

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Section: Resultsmentioning

confidence: 99%

Role of Vanadium Pentoxide Hole‐Extracting Nanolayer in Rubrene/C₇₀‐Based Small Molecule Organic Solar Cells

Zhan

Xie

Hou

et al. 2014

Journal of Nanomaterials

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“…Solution process is highly regarded as the lowest-cost way to fabricate such devices, because it could spincoat homogeneous and uniform layers with large area and, moreover, devices fabricated by this method exhibit as excellent performance as those prepared by vapor-deposition method [2]. Indeed, there have been some reports on solution-processed small-molecule OLEDs [3][4][5][6] and our group also has done much research on solution-processed OLEDs of small-molecule mixed-host structures [7][8][9][10][11][12][13]. However, things are quite different for OLEDs with structure of multilayer.…”

Section: Introductionmentioning

confidence: 99%

A solvent/non-solvent system for achieving solution-processed multilayer organic light-emitting devices

et al. 2015

Thin Solid Films

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Stable and good color purity white light‐emitting devices based on random fluorene/spirofluorene copolymers doped with iridium complex

Wang

Qian

Lin

et al. 2011

J Polym Sci B Polym Phys

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Conjugated polymers PSNFP and PSNFF based on naphthalene-containing spirofluorene structure and 9,9-dioctylfluorene, 2,5-dioctylbezene were designed and synthesized for light emitting applications. These two polymers show good blue emission both in solution and thin film. Thermal gravimetric analysis reveals they have good thermal stability with the decomposition temperature higher than 400 C. Electrochemistry characterization shows that both of these polymers have a large band gap and deep highest occupied molecular orbital, which are important features for phosphorescent host materials. White light-emitting diodes were fabricated by using PSNFF as the host material, containing two typical phosphorescent Ir complex dopants: green emitter Ir(mppy) 3 and red emitter Ir(piq) 2 . The color coordinate CIE stayed nearly constant, changed from (0.32, 0.31) to (0.28, 0.31) when the current density varied from 2 to 20 mA cm À2 .Recently, we have developed a series of new spirofluorenes and related light emitting materials. 24 Because the threedeminsional twisting structure, the intermolecular p-p

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Solution-processed white organic light-emitting devices based on small-molecule materials

Cited by 12 publications

References 25 publications

Role of Vanadium Pentoxide Hole‐Extracting Nanolayer in Rubrene/C₇₀‐Based Small Molecule Organic Solar Cells

Role of Vanadium Pentoxide Hole‐Extracting Nanolayer in Rubrene/C₇₀‐Based Small Molecule Organic Solar Cells

A solvent/non-solvent system for achieving solution-processed multilayer organic light-emitting devices

Stable and good color purity white light‐emitting devices based on random fluorene/spirofluorene copolymers doped with iridium complex

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Solution-processed white organic light-emitting devices based on small-molecule materials

Cited by 12 publications

References 25 publications

Role of Vanadium Pentoxide Hole‐Extracting Nanolayer in Rubrene/C70‐Based Small Molecule Organic Solar Cells

Role of Vanadium Pentoxide Hole‐Extracting Nanolayer in Rubrene/C70‐Based Small Molecule Organic Solar Cells

A solvent/non-solvent system for achieving solution-processed multilayer organic light-emitting devices

Stable and good color purity white light‐emitting devices based on random fluorene/spirofluorene copolymers doped with iridium complex

Contact Info

Product

Resources

About

Role of Vanadium Pentoxide Hole‐Extracting Nanolayer in Rubrene/C₇₀‐Based Small Molecule Organic Solar Cells

Role of Vanadium Pentoxide Hole‐Extracting Nanolayer in Rubrene/C₇₀‐Based Small Molecule Organic Solar Cells