Research
Organic Electronics & Nanomaterials
1. Organic Solar Cells : Polymer solar cells produces electricity from sunlight using polymers. It is a relatively novel technology. Many solar cells in the world are made from a refined, highly purified silicon crystal, similar to those used in the manufacture of integrated circuits and computer chips.
2. Organic Photodiodes
A powerful, inexpensive and flexible organic photodiode is a promising material to replace silicon-based photodetectors. Organic photodiodes can be used to improve the camera’s light sensitivity and investigate whether it can be a display with a uniform color composition.
3. Perovskite Solar Cells
Organic-inorganic halide perovskite materials have shed light on the development of lightweight, low cost, flexible, and high performance photovoltaics, which can replace commercialized silicon based PV in near future.
4. Light Emitting Diode : Polymer Electroluminescence Displays
Electroluminescence (EL) is the conversion of electrical energy into light. Light-emitting diodes (LED), based on conjugated polymers are intensively studied for potential application in large flat panel displays with low driving voltages. Electroluminescence in conjugated polymers occurs via the recombination of electrons injected into the conduction band and holes injected into the valence band.
5. Nanopatterning : Using by silicon master mold and colloidal crystal, A colloidal crystal is a highly ordered array of monodispere colloidal particles which can be formed over a long range. Colloidal crystals have been extensively studied over the past decade because of their potential applications in optoelectronic devices, photonic band gap materials, biological and chemical sensors, or catalysis. Especially, because of its nano scale regular structure colloidal crystals are promising materials for producing nanopatterns.
6. Metal Nanocrystals and their applications in Organic Electronics
Au and Ag nanoparticles plays an important role of enhancing light absorption at the active layer due to scattering and plasmonic effect. We are working on several different shape and sizes of metal nanocrystals related to the device performances, especially organic solar cells and LED.
7. Perovskite Quantum Dots Synthesis and their optoelectronic applications
For the development of lighting and display technologies, materials that emit high-purity colors at high resolution and exhibit high efficiency for realizing vivid natural colors must be explored.Recently, quantum dots (QDs), a zero-dimen- sional (0D) material, has attracted attention as the next- generation functional material because of their color tunability and narrow-band emission. Moreover, owing to their excellent optical properties, QDs serve as a promising material that was able to apply in the development of solar cells, light-emitting diodes (LEDs), X-ray detectors, transis-tors, mphotocatalysts, lasers, and water sensors.
