Results 21 to 30 of about 6,119 (253)

Synthesis of a Novel 2-Methyl-8-Quinolinol Complex of Zn (II) and Its Use in Organic Light Emitting Diodes (OLEDs) Fabrication [PDF]

Iranian Journal of Chemistry & Chemical Engineering
A zinc complex, (Me-HQ-H) [ZnI₂(Me-HQ)], was synthesized via a straightforward reaction between ZnI₂ and 2-methyl-8-quinolinol (Me-HQ). The complex was characterized using multiple techniques, including elemental analysis (CHN),     FT-IR, ¹H and ¹³C NMR
Farhad Imanifard, Maryam Daghighi Asli, Ezzatollah Najafi, Behrouz Notash   +3 more
doaj   +1 more source

Features of band-edge injection electroluminescence in GaN pn structures [PDF]

APL Electronic Devices
A study of injection electroluminescence of GaN pn homostructures produced by chloride–hydride gas-phase epitaxy is presented. The epitaxial layers are doped with silicon and magnesium to obtain n-type (doping level 5 × 1018 cm−3) and p-type (doping ...
A. E. Kalyadin, V. Sukhoveev, V. A. Ivantsov, A. M. Strel’chuk   +3 more
doaj   +1 more source

Electroluminescence property improvement by adjusting quantum wells’ position relative to p-doped region in InGaN/GaN multiple-quantum-well light emitting diodes

AIP Advances, 2017
The hole distribution and electroluminescence property improvement by adjusting the relative position between quantum wells and p-doped region in InGaN/GaN multiple-quantum-well structures are experimentally and theoretically investigated.
P. Chen, D. G. Zhao, D. S. Jiang, H. Long, M. Li, J. Yang, J. J. Zhu, Z. S. Liu, X. J. Li, W. Liu, X. Li, F. Liang, J. P. Liu, B. S. Zhang, H. Yang   +14 more
doaj   +1 more source

Terahertz Spectroscopy of Thermal Radiation from AlGaN/GaN Heterostructure on Sapphire at Low Temperatures

Applied Sciences, 2020
Terahertz spectroscopy of thermal radiation from electrically pumped AlGaN/GaN structures on sapphire substrate was investigated in this work. Comparison of experimental THz spectroscopy results to theoretical spectra calculations shows that thermal ...
Ignas Grigelionis, Irmantas Kašalynas
doaj   +1 more source

Electrically Driven MOF-Based Blue to Yellow-White Tunable Light Emitting Diodes

IEEE Access, 2020
In this study, the Gadolinium metal based organic framework (Gd-MOF) is synthesized using the hydrothermal route. The as-synthesized material is dissolved in solvent and used to fabricate organic light emitting diodes (OLEDs) in the device structure ITO ...
Fuh-Shyang Juang, Meng-Qi Yao, Tuhina Mondal, Shyamal K. Saha   +3 more
doaj   +1 more source

Anomalously bright single-molecule upconversion electroluminescence

Nature Communications
Efficient upconversion electroluminescence is highly desirable for a broad range of optoelectronic applications, yet to date, it has been reported only for ensemble systems, while the upconversion electroluminescence efficiency remains very low for ...
Yang Luo, Fan-Fang Kong, Xiao-Jun Tian, Yun-Jie Yu, Shi-Hao Jing, Chao Zhang, Gong Chen, Yang Zhang, Yao Zhang, Xiao-Guang Li, Zhen-Yu Zhang, Zhen-Chao Dong   +11 more
doaj   +1 more source

Fabrication of Li-Doped NiO Thin Films by Ultrasonic Spray Pyrolysis and Its Application in Light-Emitting Diodes

Nanomaterials, 2023
The fabrication of NiO films by different routes is important to extend and improve their applications as hole-transporting layers in organic and inorganic optoelectronic devices. Here, an automated ultrasonic pyrolysis spray method was used to fabricate
Víctor Hugo López-Lugo, Manuel García-Hipólito, Arturo Rodríguez-Gómez, Juan Carlos Alonso-Huitrón   +3 more
doaj   +1 more source

Tailored Diketopyrrolopyrrole Derivatives for Efficient Deep‐Red Organic Lasers

Advanced Functional Materials, EarlyView.
Tailored diketopyrrolopyrrole derivatives exhibit high stable amplified spontaneous emission with single or dual bands. Incorporated into distributed‐feedback lasers based on one‐ and two‐dimensional dichromated‐gelatin diffractive gratings, these materials provide a robust, flexible platform for integrated organic deep‐red light sources. ABSTRACT Deep‐
Pablo Pasqués‐Gramage, Abelardo Sánchez‐Oliva, Álex Farrando‐Pérez, Pedro G. Boj, M. Victoria Gómez, Ana M. Rodríguez, Pilar Prieto, Rafael Muñoz‐Mármol, Andrew J. Musser, Iván Torres‐Moya, María A. Díaz‐García   +10 more
wiley   +1 more source

Electroluminescence decay from exciton dissociation in MEH-PPV-CdSe layers

Entropie
This present work reports the effect of nanoparticle concentration on the electroluminescence decay from exciton dissociation in organic-inorganic layers.
Nouha Mastour, Said Ridene
doaj   +1 more source

Trifluoromethyl Substituted Derivatives of Pyrazoles as Materials for Photovoltaic and Electroluminescent Applications

Crystals, 2022
New 6-CF3-1H-pyrazolo[3,4-b]quinolines with a methyl and/or phenyl group attached to the pyrazole core (Molx (x = 1, 2, 3, 4)) were synthesized and characterized in terms of their optoelectronic applications: photovoltaic and electroluminescence.
Monika Pokladko-Kowar, Ewa Gondek, Andrzej Danel, Tomasz Uchacz, Paweł Szlachcic, Katarzyna Wojtasik, Paweł Karasiński   +6 more
doaj   +1 more source