A5018221249- Conducting polymers and applications
- Organic Electronics and Photovoltaics
- Carbon Nanotubes in Composites
- Graphene research and applications
- Perovskite Materials and Applications
- Advanced Sensor and Energy Harvesting Materials
- Fullerene Chemistry and Applications
- Advanced MEMS and NEMS Technologies
- Organic Light-Emitting Diodes Research
- Synthesis and properties of polymers
- Boron and Carbon Nanomaterials Research
- Analytical Chemistry and Sensors
- Advanced Memory and Neural Computing
- Nanotechnology research and applications
- Nanopore and Nanochannel Transport Studies
- Mechanical and Optical Resonators
- Optical Coherence Tomography Applications
- Photonic and Optical Devices
- Diamond and Carbon-based Materials Research
- Retinal and Macular Surgery
- Neuroscience and Neural Engineering
- Thin-Film Transistor Technologies
- Glaucoma and retinal disorders
Gwangju Institute of Science and Technology
2015-2024
Controlling the morphology of bulk heterojunction (BHJ) film, optoelectrical active layer, in all-polymer solar cells (all-PSCs) is both delicate and challenging pursuit high-performance organic cells....
Achieving energy-efficient and high-performance field-effect transistors (FETs) is one of the most important goals for future electronic devices. This paper reports semiconducting single-walled carbon nanotube FETs (s-SWNT-FETs) with an optimized high-
External electric field (EEF) treatment is performed to induce enhanced backbone linearity and crystal enlargement in P(NDI2OD-T2) conjugated polymer films. Consequently, EEF significantly improved morphology electron mobility.
The asymmetric monochlorination strategy not only effectively addresses the steric issues in conventional dichlorination but also enables development of promising acceptor units and semiregioregular polymers. Herein, monochlorinated isoindigo (1CIID) is successfully designed synthesized by selectively introducing single chlorine (Cl) atoms. Furthermore, 1CIID copolymerizes with two donor counterparts, centrosymmetric 2,2′-bithiophene (2T) axisymmetric...
Abstract An open‐shell quinoidal conjugated polymer exhibiting n‐type semiconducting behavior is successfully synthesized and characterized. electron‐deficient azaaromatic unit proven to reduce the energy levels of frontier orbitals via electronegative nitrogen atom steric hindrance within backbone. A azaquinoidal bithiophene (azaQuBT) a that end‐functionalized with pyridine ring. The quinodial polymer, poly(azaquinoidal bithiophene‐thiophene), PazaQuBT‐T, using azaQuBT thiophene. extended...
Abstract Recent advances in the development of organic solar cells (OSCs) have produced power conversion efficiency (PCE) over 19%. Various studies been conducted on scalable coating methods that are compatible with large‐area production photovoltaic modules. However, it is still difficult to control bulk heterojunction (BHJ) morphology active layer during large‐scale fabrication OSCs. This study reports a morphology‐controllable strategy OSCs using water treatment (WT) stirring process...
Organic photovoltaics (OPVs) have recently advanced as promising solar cells owing to their many advantages, including the possibility of a low‐temperature solution process, lightweight, and flexibility. In OPVs, role interlayer is important for efficient charge transport from photoactive layer electrodes. However, hole‐transporting (HTL), molybdenum oxide poly(3,4‐ethylenedioxythiophene)–poly(styrenesulfonate) are still used commercialization despite drawbacks. The development novel...
Increasing the number of charge carriers flowing through transport channel to improve electrical performance organic field-effect transistors (OFETs) is important because it leads a low driving voltage and high drain current value. This paper proposes new strategy, corona poling process, enhance OFETs using an external electric field when forming dielectric film PVDF-based high-k terpolymer, P(VDF-TrFE-CFE). A process was applied align dipoles with molecules capacitance, thereby increasing...
The introduction of molecular doping process is necessary to enhance the optic and electronic properties organic semiconductors for facilitating charge transport. In particular, since has a positive influence on transfer interaction between host semiconductor dopant, improved mobility been efficiently achieved. Despite its advantages, technologies in solar cells (OSCs) are emphasized development n‐type dopants used balancing electron hole. addition, bulk‐heterojunction microstructure OSCs...
An electrostatic two-axis gimbaled mirror scanner was demonstrated using tilted stationary vertical combs and self-aligned micro-assembly. Side stability enhanced the optical scan angles were 6.8/15.4 degrees on slow/fast axes, respectively.
Carbon nanotubes have shown great promise for high-performance, large-area, solution processable field-effect transistors due to their exceptional charge transport properties. In this study, we utilize the spin-coating method form networks from selectively sorted semiconducting single-walled carbon (s-SWNTs), aiming scalable electronic device fabrication. The one-dimensional nature of s-SWNTs, however, introduces significant roughness and trap sites, hindering van der Waals gap (∼0.32 nm)...
Flexible Organic Photovoltaics In article number 2200908, Dong-Yu Kim and co-workers introduced an oxidized carbon soot (OCS)-based hole-transporting layer to improve charge transport without recombination, finally enhancing the device performance up 15.04%. Due functionalization of OCS with octadecylamine, largesized flexible organic photovoltaics prepared by blade coating exhibited high storage stability (71% retention) mechanical (78% retention).
Organic solar cells (OSCs) have been studied widely as renewable energy resources for a few decades owing to their technological advantages, including low cost, light weight, flexibility, and the potential of large area printing. To upgrade active layers OSCs into an optimized form, simple straightforward strategy is demonstrated by introducing two types size‐controlled chevron (V)‐shaped blades delicately control PM6:Y6‐based bulk heterojunction (BHJ) films under ambient conditions. A power...
Organic Solar Cells In article number 2204871, Dong-Yu Kim and co-workers propose water treatment by inducing vortex agitation in the stirring process of active solution for organic solar cells, which can yield good dispersion donors acceptors. The introduced content is universally optimized small (0.1 cm2) large (10 cells with improved final device efficiency stability.
Single-walled carbon nanotube (SWNT) is desirable next generation semiconductor for flexible, transparent and even stretchable with exceptional electrical characteristics. Here, high-performance n-type semiconducting SWNT field-effect transistors (s-SWNT-FETs) are achieved by chemical doping using anion-π interaction between anion of tetrabutylammonium fluoride (TBAF) salt. The Fermi level (EF) shifts to the conduction band edge increasing dopant concentration. doped s-SWNT-FETs exhibit...