A Review Paper On: Organic Light-Emitting Diode (Oled) Technology and Applications

Sain, Nikhil; Sharma, Deepesh; Choudhary, Priya

doi:10.33564/ijeast.2020.v04i11.103

Cited by 12 publications

(10 citation statements)

References 11 publications

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“…Generally, anodes and cathodes are used to connect OLEDs, and the main source of device operation is electricity. 5 The emissive layer becomes more negatively charged and the conductive layer becomes more positively charged when electricity is applied to the OLED. The emissive layer captures the electron flow which is withdrawn by the conducting layer, and so, the hole flow increases.…”

Section: Working Of Oledsmentioning

confidence: 99%

A Review on the Milestones of Blue Light-Emitting Materials in India

et al. 2023

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Since 1987 in the field of optoelectronics, organic light-emitting diodes (OLEDs) have secured their position because of their extreme use in panels of lighting applications such as TV and smartphone displays. At present, OLEDs are at top-notch position in the lighting market for their promising features. The field of OLEDs is rapidly growing day by day in academia and industry due to the success of OLEDs in the form of excellent efficiency, feasible methods, excellent lifetime, color purity, and superb device architecture. As a result, OLEDs are new profitable leading devices of the 21st century. However, the OLED industry has evolved in optoelectronics in the last 30 years and is advancing rapidly just because of the development in OLED materials (fluorescent, phosphorescent, thermally activated delayed fluorescent, and blue light-emitting materials). Blue light-emitting materials have achieved incredible popularity nationally and internationally. At the international level, USA, Japan, Korea, and Germany are at the top of the list in the production of OLEDs. India has also seen rapid progress in OLED development in the last 12 years and details of research in blue OLEDs by key players of India are involved in this report.1 Introduction1.1 OLED Construction1.2 Working of OLED2 OLED Development2.1 Historical Background of OLED2.1.1 International Status2.1.2 National Status3 Progress of Blue Emitters in India4 Present Scenario of Blue OLEDs5 Conclusions and Outlook

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Section: Working Of Oledsmentioning

confidence: 99%

A Review on the Milestones of Blue Light-Emitting Materials in India

et al. 2023

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“…In between the emissive layer and anode, there are two layers to control and ejection of the hole called the hole injection layer and hole transport layer. Similarly, there also two layers in between the emissive layer and cathode called the electron transport layer and blocking layer [9]. Figure 2 describes the structure and mechanism of OLEDs.…”

Section: Structure and Mechanism Of Oledsmentioning

confidence: 99%

“…At an emissive layer both electron and hole combined. As a hole (a lack of electron) collides with an electron, the two cancel each other out and emit a fleeting burst of energy in the form of a photon [9]. This is known as recombination, and since it occurs hundreds of times per second, the OLED emits constant light as long as the current flows.…”

Section: Structure and Mechanism Of Oledsmentioning

confidence: 99%

Conducting Polymer-Based Emissive Layer on Efficiency of OLEDs

Nayak¹,

Choudhary²

2021

Light-Emitting Diodes and Photodetectors - Advances and Future Directions [Working Title]

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Many changes have arisen in the world of display technologies as time has passed. In the vast area of display technology, Organic light-emitting diode is a recent and exciting discovery. Organic light-emitting diodes (OLEDs) have received a lot of curiosity among the researcher in recent years as the next generation of lighting and displays due to their numerous advantages, such as superior efficiency, mechanical flexibility and stability, chemical versatility, ease of fabrication, and so on. It works on the theory of electroluminescence, which is a mechanism in which electrical energy converts to light energy. Organic LEDs have a thickness of 100 to 500 nanometers or 200 times that of human hair. In OLEDs, organic material can be used in two or three layers. The emissive layer plays a key role in OLEDs. Polymers are used in the emissive layer to enhance the efficiency of OLEDs at the same time self-luminescence materials are used in OLEDs. In displays, this self-illuminating property removes the need for backlighting. Compared to LEDs and LCDs, OLED displays are smaller, lighter, and more portable.

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“…[1][2][3] Among other drawbacks, organic light-emitting diodes (OLEDs) can degrade fast, especially blue-emitting OLEDs, and are fabricated with complex and expensive technologies which require advanced lithography and clean room environment. [4][5][6][7] In contrast, cost-effective solution processable methods not requiring lithography and based on MHPs have been recently used to produce large-area, highly efficient and low-cost optoelectronic devices and solar cells. [8] MHPs are especially wellsuited for solution processable methods because of their easy synthesis at low temperature, defect tolerance, high absorption capability, tunability of bandgap energy within the visible and near infrared ranges, high photoluminescence quantum yield (PLQY), narrow emission peak, good transport properties and a low density of non-radiative recombination centers.…”

Section: Introductionmentioning

confidence: 99%

High Quality Inkjet Printed‐Emissive Nanocrystalline Perovskite CsPbBr₃ Layers for Color Conversion Layer and LEDs Applications

Vescio

Frieiro

Gualdrón‐Reyes

et al. 2022

Adv Materials Technologies

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Metal halide perovskites (MHPs) have shown outstanding optical emissive properties and can be employed in several optoelectronics devices. In contrast with materials of well‐established technologies, which are prone to degradation or require expensive processes, MHPs can be obtained by solution processing methods and increase stability. Inkjet printing is proposed as an industrial friendly technique to deposit MHPs. The inks have been developed from colloidal CsPbBr3 nanocrystals and printing procedures that allow the deposition of thin layers with intense green emission. High emissive printed layers are assured by carrying out thermal annealing in vacuum oven, which is demonstrated to promote compact layers with low roughness, corroborated by SEM and AFM. XRD measurements show CsPbBr3 crystalline layers with cubic symmetry and XPS provides insight into the stoichiometric composition and local bonding. Optical properties of inkjet‐printed CsPbBr3 films have been analyzed by UV–vis absorbance and photoluminescence (PL), to extract the bandgap energy and photoluminescence quantum yield (PLQY). CsPbBr3 printed layers emit at 524 nm with a narrow emission (FWHM ≈ 15 nm), exhibiting a PLQY up to 20%. These results enabled the large‐scale fabrication by inkjet printing of CsPbBr3 color conversion layers (CCLs) and pave the way for flexible LEDs.

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A Review Paper On: Organic Light-Emitting Diode (Oled) Technology and Applications

Cited by 12 publications

References 11 publications

A Review on the Milestones of Blue Light-Emitting Materials in India

A Review on the Milestones of Blue Light-Emitting Materials in India

Conducting Polymer-Based Emissive Layer on Efficiency of OLEDs

High Quality Inkjet Printed‐Emissive Nanocrystalline Perovskite CsPbBr₃ Layers for Color Conversion Layer and LEDs Applications

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A Review Paper On: Organic Light-Emitting Diode (Oled) Technology and Applications

Cited by 12 publications

References 11 publications

A Review on the Milestones of Blue Light-Emitting Materials in India

A Review on the Milestones of Blue Light-Emitting Materials in India

Conducting Polymer-Based Emissive Layer on Efficiency of OLEDs

High Quality Inkjet Printed‐Emissive Nanocrystalline Perovskite CsPbBr3 Layers for Color Conversion Layer and LEDs Applications

Contact Info

Product

Resources

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High Quality Inkjet Printed‐Emissive Nanocrystalline Perovskite CsPbBr₃ Layers for Color Conversion Layer and LEDs Applications