Solution-Processed, Organic-Soluble Carbon Dots for Various Optoelectronic Applications: From Light-Emitting Devices, Liquid-Crystal Displays, and Photovoltaic Devices
Zh-Cheng Jiang1*, Tzu-Neng LIn1, Chi-Tsu Yuan1
1Department of Physics, Chung Yuan Christian University, Chung Li, Taiwan
* presenting author:Zh-Cheng Jiang,
Carbon nano-dots (CNDs) have attracted much attention owing to their superior materials and photo-physical properties, such as low-cost, abundant precursor materials, less toxicity, high photo-stability and biocompatibility. So far, most of the synthetic methods for CNDs have utilized water as solvent in reaction process. Microwave-assisted synthesis is typically one of them using water as solvent. Since almost reaction is completed in water, the resulting CNDs have hydrophilic surface functional group. Unfortunately, most of conductive polymer applied in electroluminescence device dissolves in organic solvent, such as THF, toluene and chloroform. Therefore, the water-suspended CNDs are difficult to develop for electronic device, such as light-emitting diodes and solar cell. To overcome this problem, we modify CNDs surface functional group from water phase to organic phase and fabricate electroluminescence light-emitting diodes.

Keywords: carbon nano-dots, less toxicity, conductive polymer, electroluminescence light-emitting diodes