DC Field | Value | Language |
---|---|---|
dc.contributor.author | 김지원 | - |
dc.date.accessioned | 2022-03-29T03:51:12Z | - |
dc.date.available | 2022-03-29T03:51:12Z | - |
dc.date.issued | 2022 | - |
dc.identifier.other | OAK-2015-09361 | - |
dc.identifier.uri | http://postech.dcollection.net/common/orgView/200000597477 | ko_KR |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/112166 | - |
dc.description | Master | - |
dc.description.abstract | Energy-saving window that selectively blocks near-infrared (NIR) is a promising technology to save energy consumption. However, it is hard to achieve both high transmittance in visible light and high reflectance in NIR for the energy-saving windows. Here, we demonstrate a TiO2/Ag/TiO2/SiO2/TiO2 multilayer on a glass substrate to selectively block NIR while maintaining high transmittance to visible light. We first design and optimize the thickness of a TiO2/Ag/TiO2 structure; the metal layer reflects NIR and the dielectric layers increase transmittance of visible light with zero reflection condition. To further enhance NIR-blocking capability, we implement a TiO2 back reflector with a SiO2 spacer to TiO2/Ag/TiO2 structure. The back reflector can induce additional Fresnel reflection without sacrificing transmittance to visible light. The optimal TiO2 (32 nm)/Ag (22 nm)/TiO2 (30 nm)/ SiO2 (100 nm)/TiO2 (110 nm)/glass shows solar energy rejection 89.2% (reflection 86.5%, absorption 2.7%) in NIR, visible transmittance 69.9% and high long-wave (3 ≤ λ ≤ 20 μm) reflectance > 95%. This proposed visible-transparent, near-infrared-reflecting multilayer film can be applied to the windows of buildings and automobiles to reduce the energy consumption. | - |
dc.language | eng | - |
dc.publisher | 포항공과대학교 | - |
dc.title | The design of energy-saving photonic multilayer structure induced near-infrared (NIR) blockage | - |
dc.title.alternative | 근적외선 차단을 유도하는 에너지 절약형 광학 다층 구조의 설계 | - |
dc.type | Thesis | - |
dc.contributor.college | 일반대학원 신소재공학과 | - |
dc.date.degree | 2022- 2 | - |
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