A5025953466- Organic Light-Emitting Diodes Research
- Organic Electronics and Photovoltaics
- Conducting polymers and applications
- Luminescence and Fluorescent Materials
- Advanced Sensor and Energy Harvesting Materials
- Thin-Film Transistor Technologies
- Synthesis and Properties of Aromatic Compounds
- Surface Modification and Superhydrophobicity
- Nanomaterials and Printing Technologies
- Sensorless Control of Electric Motors
- Supramolecular Chemistry and Complexes
- Additive Manufacturing and 3D Printing Technologies
- Industrial Automation and Control Systems
- Advanced optical system design
- Perovskite Materials and Applications
- Advanced Control Systems Design
- Nanofabrication and Lithography Techniques
- Green IT and Sustainability
- solar cell performance optimization
- Porphyrin and Phthalocyanine Chemistry
- Fuzzy Logic and Control Systems
- Near-Field Optical Microscopy
- Crystal Structures and Properties
- Power Quality and Harmonics
- Adhesion, Friction, and Surface Interactions
University of St Andrews
2023-2025
Universiti Sains Malaysia
2024
Korea University
2017-2021
Sejong University
2017-2021
Gongju National University of Education
2020
Kongju National University
2020
Korea Basic Science Institute
2020
Korea Institute of Materials Science
2020
International Islamic University Malaysia
2020
Convergence
2019
Stretchable organic light-emitting diodes are ubiquitous in the rapidly developing wearable display technology. However, low efficiency and poor mechanical stability inhibit their commercial applications owing to restrictions generated by strain. Here, we demonstrate exceptional performance of a transparent (molybdenum-trioxide/gold/molybdenum-trioxide) electrode for buckled, twistable, geometrically stretchable under 2-dimensional random area strain with invariant color coordinates. The...
Abstract The study reports two pairs of chiral multi‐resonant thermally activated delayed fluorescence (MR‐TADF) materials PCP‐DiKTa and Czp‐DiKTa by decorating a known MR‐TADF core, DiKTa , with different [2.2]paracyclophane (PCP) based planar groups. shows narrow sky‐blue emission full width at half maximum (FWHM) 44 nm, while the is slightly broader FWHM 66 nm redshifted. Both emitters show high photoluminescence quantum yields 93 99% for respectively. Enantiomerically pure samples both...
At present, green technology is a major concern in every country around the world and electricity clean energy which encourages acquisition of this technology. The main applications are made through use electric motors. Electric power converted to mechanical using motor, that say, electrical accomplished Brushless direct current (BLDC) motors have become very attractive many due its low maintenance costs compact structure. BLDC can be substituted make industries more dynamic. To get better...
Abstract Multiresonant thermally activated delayed fluorescence (MR‐TADF) emitters have been the focus of extensive design efforts as they are recognized to show bright, narrowband emission, which makes them very appealing for display applications. However, planar geometry and relatively large singlet–triplet energy gap lead to, respectively, severe aggregation‐caused quenching (ACQ) slow reverse intersystem crossing (RISC). Here, a strategy is proposed address both issues. Two MR‐TADF...
Recombination zone (RZ) confinement and charge balance are the most important factors for realizing enhanced efficiency in phosphorescent organic light emitting devices (Ph-OLEDs). Here, we demonstrated RZ movement improved Ph-OLED by varying electron transport layer 2,2',2''-(1,3,5-Benzinetriyl)-tris(1-phenyl-1-H-benzimidazole) (TPBi) thickness. The thickness increment of TPBi not only control on to emission but also shifting towards cathode. with different thick is extracted from exciplex...
Nitrogen/carbonyl (N/C=O) based multi-resonant thermally activated delayed fluorescence (MR-TADF) emitters are attractive due to their bright, narrowband emission and the ease with which they can be synthesized. However, photophysics of most examples this class suffer from slow reverse intersystem crossing (RISC) because relatively large singlet-triplet energy gap (EST). Thus, organic light-emitting diodes (OLEDs) typically show severe efficiency roll-off. Here, two MR-TADF DiKTaSe...
We report the confinement of recombination zone (RZ) in green phosphorescent organic light-emitting diodes (Ph-OLEDs) for enhanced efficiency by varying emission layer (EML) thickness and through quantum well (QW) insertion. At low EML, is reduced owing to diffusion RZ toward EML/hole transport interface, which was revealed presence exciton blocking [TCTA: tris(4-carbazoyl-9-ylphenyl)amine] excitation accompanied a blue-shift electroluminescence (EL). Further increase EML caused move...
Abstract The prototypical example of a (cyclo)phane, [2.2]paracyclophane (PCP), has proven to be versatile stereogenic moiety within the design circularly polarized thermally activated delayed fluorescence (CP‐TADF) emitters; however, exploration other cyclophanes CP‐TADF emitter been largely neglected. Here, comparative study photophysical and optoelectronic properties two cyclophane emitters, (1,7) t BuCzpPhTrz its isomer (1,4) , is presented. carbazolophane‐triazine compound obtained via...
Low-temperature annealing of Zinc oxide (ZnO) films as electron transport layers for inverted polymer solar cells was investigated. A wrinkled morphology the ZnO film has previously been mostly observed after dynamic (DA). In this study, we investigated effect static (SA) deposited by sol–gel method at 25 °C, 150 and 200 °C 10 min in air. We formation wrinkle structures on surface sample annealed while flat were formed °C. Here, a variable ramping/heating rate provided process resulted...
Vacancy-ordered halide perovskites have received great interest in optoelectronic applications. In this work, we report the novel inorganic Cs10MnSb6Cl30 with a distinctive 10H (10-layer hexagonal) perovskite polytype structure (hcccc)2 stacking. has 30% B-site vacancies ordered at both corner- and face-sharing sites, resulting [MnSb6Cl30]10-n columns, i.e., reduction of octahedral connectivity to 1D. This results enhanced photoluminescence comparison previously reported 25% vacancy-ordered...
Abstract Some applications of organic light‐emitting diodes (OLEDs) require large area, high light output, and uniformity. It is difficult to achieve these attributes simultaneously because voltage drops in the contacts, which cannot easily satisfy optical transparency electrical conductivity simultaneously. In area OLEDs, thin electrodes with sheet resistance induce across devices, leading non‐uniform distribution light. However, thick low decrease output due transmittance. To overcome this...
Hydrogenated amorphous Si (a-Si:H) thin-film solar cells (TFSCs) generally contain p/n-type layers, which are fabricated using toxic gases. The substitution of these layers with non-toxic materials while improving the device performance is a major challenge in field TFSCs. Herein, we report fabrication a-Si:H TFSCs n-type layer replaced self-assembled monolayer (3-aminopropyl) triethoxysilane (APTES). X-ray photoelectron spectroscopy results showed that amine groups from APTES attached...
Multi-resonant thermally activated delayed fluorescence (MR-TADF) emitters have been the focus of extensive design efforts as they are recognized to show bright, narrowband emission, which makes them very appealing for display applications. However, planar geometry and relatively large singlet-triplet energy gap lead to, respectively, severe aggregation-caused quenching (ACQ) slow reverse intersystem crossing (RISC). Here, a strategy is proposed address both issues. Two MR-TADF...
Brushless Direct Current (BLDC) motor is the most popular useable for automation and industry. For good performance of BLDC hunger driving circuit but costly, complex control mechanism, various parameter dependency low torque. The Proportional Integral (PI), Derivative (PID), fuzzy logic, adaptive, Quantity Feedback Theory (QFT), Pulse Width Modulation (PWM) controller are common types method existing motor. This research explores some well-working experiments identified PID as far more...
The prototypical example of a (cyclo)phane, [2.2]paracyclophane (PCP), has proven to be versatile stereogenic moiety within the design circularly polarized thermally activated delayed fluorescence (CP-TADF) emitters; however, exploration other cyclophanes CP-TADF emitter been largely neglected. Here, comparative study photophysical and optoelectronic properties two cyclophane emitters, (1,7)tBuCzpPhTrz its isomer (1,4)tBuCzpPhTrz, is presented. carbazolophane-triazine compound...
In this present study, an efficient method has been proposed to develop a high hydrophobic zincated coating on the eva-core aluminium (Al) alloy surface. The double zincating (Z2) was utilized required roughness Al To control surface energy, lauric acid (LA) coated using liquid self-assembled monolayers (L-SAMs) method. Surface morphology, chemical composition of treated and untreated studied scanning electron microscopy (SEM), atomic force (AFM), optical X-ray diffraction (XRD),...