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Realization of high luminous transmittance and solar modulation ability by thermochromic VO2-based induced transmittance filter (ITF)
- Source :
- Journal of Applied Physics. 126:075303
- Publication Year :
- 2019
- Publisher :
- AIP Publishing, 2019.
-
Abstract
- This paper presents a novel thermochromic induced transmittance filter (ITF) based on VO2 films. The ITF structure enables high transmittance in the short wavelength range with wide rejection at longer wavelengths, which meets the requirements of thermochromic VO2 for the metal-insulator transition. Thus, the VO2-based ITFs are designed and fabricated based on the induced transmittance effect, and a graded-index material TiO2 is initially adopted for the simplified structure of VO2-based ITF comparing standard ITFs. The VO2-based ITF's properties are characterized systematically and compared with those of VO2 films. Favorable results of crystallinity, surface roughness, hydrophobicity, the thermal hysteresis width, and pleasant appearance color are achieved in these VO2-based ITFs. Moreover, luminous transmittance Tlum (380–780 nm) of 48.8% and a solar modulation ability ΔTsol of 6.2% are achieved with an ideal spectrum shape in the VO2-based ITF, which provides a highly efficient solution to improve thermochromic VO2 films and related field.This paper presents a novel thermochromic induced transmittance filter (ITF) based on VO2 films. The ITF structure enables high transmittance in the short wavelength range with wide rejection at longer wavelengths, which meets the requirements of thermochromic VO2 for the metal-insulator transition. Thus, the VO2-based ITFs are designed and fabricated based on the induced transmittance effect, and a graded-index material TiO2 is initially adopted for the simplified structure of VO2-based ITF comparing standard ITFs. The VO2-based ITF's properties are characterized systematically and compared with those of VO2 films. Favorable results of crystallinity, surface roughness, hydrophobicity, the thermal hysteresis width, and pleasant appearance color are achieved in these VO2-based ITFs. Moreover, luminous transmittance Tlum (380–780 nm) of 48.8% and a solar modulation ability ΔTsol of 6.2% are achieved with an ideal spectrum shape in the VO2-based ITF, which provides a highly efficient solution to improve ther...
- Subjects :
- 010302 applied physics
Thermochromism
Materials science
business.industry
musculoskeletal, neural, and ocular physiology
General Physics and Astronomy
02 engineering and technology
021001 nanoscience & nanotechnology
01 natural sciences
Crystallinity
Wavelength
Filter (video)
Modulation
0103 physical sciences
Transmittance
Surface roughness
Optoelectronics
0210 nano-technology
business
human activities
Realization (systems)
circulatory and respiratory physiology
Subjects
Details
- ISSN :
- 10897550 and 00218979
- Volume :
- 126
- Database :
- OpenAIRE
- Journal :
- Journal of Applied Physics
- Accession number :
- edsair.doi...........f622ea7a3f5b4c90f7c9aa96fb0afa2a