| 초록 |
The rapid modernization lead to increased energy demand. Especially, building energy’s usage including heating and air-conditioning reach up to 40% of the overall energy consumption. Smart windows with controllable NIR light transmittance can significantly decrease the building’s energy consumption. However, most of the recent smart window technology cannot meet the target of solar modulation control. For example, although W-VO2 materials control NIR transmittance by phase change, it shows low modulation ability for NIR transmittance. (ΔT_IR: 20% at 1000nm) In this study, we introduce thermo-sensitive polymer materials with higher modulation than that of W-VO2. PNIPAm materials show notable transmittance reversibility between the higher and the lower temperature than LCST for sunlight and the long time stability. The result indicates high modulation for NIR range (ΔT_IR: ≥60% at 1000nm). |
