| 초록 |
As the industry developments, sensor is more important to detect toxicity gases. Regarding sensing techniques, it can be categorized into electrochemical types, optical types, semi-conducting types, catalytic types, and infrared types. Not using a gas sensor of single type, furthermore, the confluence of gas sensor of various types is able to supplement their weakness and improve to analyze gases. Lead-free halide perovskites are satisfied these convergence and stable under various environmental conditions like humidity and temperature. Therefore, it is possible to fabrication eco-friendly gas sensor to detect hydroxyl group such as water, methanol, ethanol and propanol. The perovskite gas sensor obtained correlation between response and polarity. Furthermore, its blue photoluminescence is significantly redshifted by detecting hydroxyl group through phase transition. |
