Improved Hole Injection in a Quantum Rod Light Emitting Diode

In this study, we have synthesized the molybdenum sulfide quantum dots (MoS2 QDs) and zinc sulfide quantum dots (ZnS QDs) and demonstrated a highly efficient green phosphorescent organic light-emitting diode (OLED) with hybrid poly (3,4-ethylenedioxythiophene)/poly (styrenesulfonate) (PEDOT:PSS)/QDs hole injection layer (HIL). The electroluminescent properties of PEDOT:PSS and hybrid HIL based devices were explored. An optimized OLED based on the PEDOT:PSS/MoS2 QDs HIL exhibited maximum current efficiency (CE) of 72.7 cd A−1, which shows a 28.2% enhancement as compared to counterpart with single PEDOT:PSS HIL. The higher device performance of OLED with hybrid HIL can be attributed to the enhanced hole injection capacity and balanced charge carrier transportation in the OLED devices. The above analysis illustrates an alternative way to fabricate the high efficiency OLEDs with sulfide quantum dots as a HIL.

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Luminous Efficiency Improvement of OLED by Thickness Variation of Organic Materials

International Journal of Engineering and Advanced Technology - Regular Issue ◽

10.35940/ijeat.f8955.088619 ◽

2019 ◽

Vol 8 (6) ◽

pp. 4379-4382

Keyword(s):

Light Emitting Diode ◽

Luminous Efficiency ◽

Hole Injection ◽

Thickness Variation ◽

Emission Layer ◽

New Approach ◽

Light Emitting ◽

Organic Light Emitting Diode ◽

Organic Interfaces ◽

Different Thickness

Organic light emitting diode is a Solid state lighting devices, the charge transporters must be infused from the anode and cathode yet the execution, lifetime, effectiveness and solidness of these devices are normally administered by the correct thickness of the material layers and terminal/organic interfaces at the anode contacts. In this paper we exhibit a new approach using different thickness of organic material of emissive layer and hole injection layer in OLED. We could enhance the effectiveness of doping materials by framing exciplex improved OLED devices and concentrate their execution enhancement by utilizing different thickness. In this work different thickness of emission layer, ETL layer and HIL is taken and maximum luminous efficiency of different devices were observed

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Performance improvement of GaN-based light-emitting diode with a p-InAlGaN hole injection layer

Chinese Physics B ◽

10.1088/1674-1056/23/2/028502 ◽

2014 ◽

Vol 23 (2) ◽

pp. 028502 ◽

Cited By ~ 2

Author(s):

Xiao-Peng Yu ◽

Guang-Han Fan ◽

Bin-Bin Ding ◽

Jian-Yong Xiong ◽

Yao Xiao ◽

...

Keyword(s):

Performance Improvement ◽

Light Emitting Diode ◽

Hole Injection ◽

Light Emitting ◽

Hole Injection Layer

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Highly-Efficient Solution Processed Yellow Organic Light Emitting Diode With Tungsten Trioxide Hole Injection/Transport Layer

IEEE Transactions on Nanotechnology ◽

10.1109/tnano.2019.2959884 ◽

2020 ◽

Vol 19 ◽

pp. 61-66 ◽

Cited By ~ 1

Author(s):

Pankaj Kumar ◽

Niraj Agrawal ◽

Surya Deo Choudhary ◽

Anil Kumar Gautam

Keyword(s):

Tungsten Trioxide ◽

Efficient Solution ◽

Light Emitting Diode ◽

Transport Layer ◽

Hole Injection ◽

Solution Processed ◽

Light Emitting ◽

Organic Light Emitting Diode ◽

Highly Efficient ◽

Organic Light

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Polymer Layer Ordering of Polyaniline Derivatives in Pled Devices: Surface Adsorption and Characterization

MRS Proceedings ◽

10.1557/proc-488-115 ◽

1997 ◽

Vol 488 ◽

Cited By ~ 2

Author(s):

R. C. Advincula ◽

W. Knoll ◽

C. W. Frank ◽

D. Roitman ◽

R. Moon ◽

...

Keyword(s):

Light Emitting Diode ◽

Deposition Process ◽

Film Structure ◽

Hole Injection ◽

Polyelectrolyte Adsorption ◽

Light Emitting ◽

Linear Behavior ◽

Structure Morphology ◽

Vis Spectroscopy ◽

Oppositely Charged

AbstractThe fabrication and characterization of polyaniline (PANI) derivatives deposited on ITO coated glass is investigated as possible hole injection layers for MEH-PPV based polymer light emitting diode (PLED) devices. This involved multilayer ordering by the alternate polyelectrolyte adsorption of polyaniline and sulfonated poyaniline with an oppositely charged polyelectrolyte from solution. A combination of spectroscopic and microscopic techniques was utilized to determine the layer ordering, film structure, morphology, and homogeneity. The deposition process generally showed a linear behavior for all pairs as shown by ellipsometry and UV-vis spectroscopy. However, surface plasmon spectroscopy (SPS) and AFM revealed that thicker films are accompanied by increased surface roughness regardless of concentration. Comparison in performance was made between bare ITO and PANI or SPANI coated devices. Initial investigations of PLED performance showed significant improvements in lifetime and efficiency compared to bare ITO.

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