Enhanced light extraction from organic light emitting diodes using a flexible polymer-nanoparticle scattering layer

Tan

Smart Materials for Opto-Electronic Applications

et al. 2023

Nanodiamonds (NDs) have attracted great interest due to their high refractive index and thermal conductivity. The unique properties of NDs, including high thermal conductivity, chemical stability, and tensile strength, make them a promising candidate for enhancing OLED efficiency. NDs were coated either beneath or above the PEDOT:PSS hole injection layer in a green-emitting OLEDs (ITO/ PEDOT:PSS/NPD/CBP:Ir(ppy)3/TPBi/Liq/Al). The best performance is obtained from the device with NDs layer beneath the PEDOT:PSS layer where the current efficiency (CE) is increased by 5.4%, power efficiency (PE) is increased by 17.7% and the external quantum efficiency (EQE) is increased by 4.5% at a luminance of 10000 cd/m2 as compared to a standard device without NDs layer.

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of nanodiamonds layer in organic light emitting diode

Tan

Smart Materials for Opto-Electronic Applications

et al. 2023

“…Along with TiO 2 nanoparticles, other inorganic nanoparticles have also been explored, and their influence on the composite material was studied. Among these, ZnS and ZrO 2 are the most common ones. − …”

Section: Organic/inorganic Hybrid Materialsmentioning

confidence: 99%

Recent Progress in Sulfur-Containing High Refractive Index Polymers for Optical Applications

Mazumder,

Voit,

Banerjee

2024

ACS Omega

The development in the field of high refractive index materials is a crucial factor for the advancement of optical devices with advanced features such as image sensors, optical data storage, antireflective coatings, light-emitting diodes, and nanoimprinting. Sulfur plays an important role in high refractive index applications owing to its high molar refraction compared to carbon. Sulfur exists in multiple oxidation states and can exhibit various stable functional groups. Over the last few decades, sulfur-containing polymers have attracted much attention owing to their wide array of applications governed by the functional group of sulfur present in the polymer repeat unit. The interplay of refractive index and various other polymer properties contributes to successfully implementing a specific polymer material in optical applications. The focus on developing optoelectronic devices induced an ever-increasing need to integrate different functional materials to achieve the devices' full potential. Several devices that see the potential use of sulfur in high refractive index materials are reviewed in the study. Like sulfur, selenium also exhibits high molar refraction and unique chemical properties, making it an essential field of study. This review covers the research and development in the field of sulfur and selenium in different forms of functionality, focusing on the chemistry of bonding and the optical properties of the polymers containing the heteroatoms mentioned above. The strategy and rationale behind incorporating heteroatoms in a polymer matrix to produce highrefractive-index materials are also described in the present review.

Int J of Quantum Chemistry

“…While large sized‐OLED panels are used for high‐performance displays such as television screens, computer monitors, signages, and so on, whereas small‐sized‐OLED panels are preferred for screens like smartphones, smartwatches, and handheld game consoles [16–23]. Compared with other display technologies, OLEDs have some advantages because of their economical, flexible, bendable, foldable, transparent, and so on [24–28]. For that reason, it is hoped that OLEDs will take an important place in the display market in the future [29–32].…”

Section: Introductionmentioning

confidence: 99%

“…technologies, OLEDs have some advantages because of their economical, flexible, bendable, foldable, transparent, and so on [24][25][26][27][28]. For that reason, it is hoped that OLEDs will take an important place in the display market in the future [29][30][31][32].…”

mentioning

confidence: 99%

Organic light‐emitting diode behaviors of some synthesized platinum(II)‐based complexes

Üngördü

2023

Organic light‐emitting light diodes (OLEDs) have been increasingly used in displays, replacing liquid‐crystal displays (LCD) and light‐emitting diodes (LEDs) panels. The increase in commercial use of OLED has led to the search for OLED with high performance. For that reason, the OLED properties of monomers and dimers of some synthesized platinum(II)‐based complexes were estimated by using different computational chemistry tools with different codes. The electron/hole reorganization energies, the adiabatic/vertical ionization potentials, the adiabatic/vertical electron affinities, the chemical hardness values, the dipole moments, the frontier orbital shapes/energy levels, the energy gaps, the emission wavelengths, spin‐orbit matrix elements, the rates of reverse intersystem crossing and intersystem crossing of the investigated complexes were determined. From the theoretically obtained data, it was found that Pt(hppz)2 and Pt(fppz)2 complexes can be used as electron transfer material. Furthermore, it was stated that Pt(f2bipz)(bpy) is both electron‐blocking layer and hole blocking layer materials. Moreover, it was noted that that PtOEP complex can be utilized as a good electron injection layer and hole injection layer material. Addition to these, it was emphasized that that Pt(f2bipz)(bpy) can be considered as a good candidate for near infrared organic light emitting diodes and thermal activated delayed fluorescent organic light emitting diodes. In light of computational chemistry, it should be expected that the study will provide a great contribution to studies related to organic light emitting diodes.