File Download
There are no files associated with this item.
Links for fulltext
(May Require Subscription)
- Publisher Website: 10.1016/j.apenergy.2019.113690
- Scopus: eid_2-s2.0-85070518735
- WOS: WOS:000497974600084
- Find via
Supplementary
- Citations:
- Appears in Collections:
Article: Perovskite thermochromic smart window: Advanced optical properties and low transition temperature
Title | Perovskite thermochromic smart window: Advanced optical properties and low transition temperature |
---|---|
Authors | |
Keywords | Energy efficient glazing Perovskite Smart window Thermochromism Thin film |
Issue Date | 2019 |
Publisher | Pergamon. The Journal's web site is located at http://www.elsevier.com/locate/apenergy |
Citation | Applied Energy, 2019, v. 254, p. article no. 113690 How to Cite? |
Abstract | Windows are one of the most inefficient components in buildings. Common thermochromic smart windows using VO2 can mitigate such energy loss. However, they suffer from several problems, namely, low solar modulation ability, high transition temperature (i.e. 68 °C) and low luminous transmittance. In this study, we propose a perovskite thermochromic smart window towards achieving high solar modulation ability whilst maintaining a high luminous transmittance and a low transition temperature. Perovskite material shows a significant thermochromism in the visible and ultraviolet region. Since half of the photons lie in this spectral region, a high solar modulation can be achieved by perovskites. The material was optimized by varying the spin speed in the fabrication process as well as the mixing ratio between precursors. The optimized sample exhibits a solar modulation ability of 25.5% with luminous transmittance of 34.3% and higher than 85% in the hot (80 °C) and cold (25 °C) states, respectively, making this material suitable for practical device applications. The hysteresis loop, the transition temperature as well as transition time in relation to the relative humidity of a perovskite smart window during the heating and cooling process are investigated in this study. From field tests results, the perovskite smart window can help reduce the indoor air temperature by about 2.5 °C compared to a normal window. Overall, based on the results obtained in this study, the perovskite thermochromic smart window has potential to achieve excellent thermochromic properties, providing an alternative to alleviate the high energy consumed in buildings. |
Persistent Identifier | http://hdl.handle.net/10722/279181 |
ISSN | 2023 Impact Factor: 10.1 2023 SCImago Journal Rankings: 2.820 |
ISI Accession Number ID |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Zhang, Y | - |
dc.contributor.author | Tso, CY | - |
dc.contributor.author | Iñigo, JS | - |
dc.contributor.author | Liu, S | - |
dc.contributor.author | Miyazaki, H | - |
dc.contributor.author | Chao, CYH | - |
dc.contributor.author | Yu, KM | - |
dc.date.accessioned | 2019-10-21T02:21:05Z | - |
dc.date.available | 2019-10-21T02:21:05Z | - |
dc.date.issued | 2019 | - |
dc.identifier.citation | Applied Energy, 2019, v. 254, p. article no. 113690 | - |
dc.identifier.issn | 0306-2619 | - |
dc.identifier.uri | http://hdl.handle.net/10722/279181 | - |
dc.description.abstract | Windows are one of the most inefficient components in buildings. Common thermochromic smart windows using VO2 can mitigate such energy loss. However, they suffer from several problems, namely, low solar modulation ability, high transition temperature (i.e. 68 °C) and low luminous transmittance. In this study, we propose a perovskite thermochromic smart window towards achieving high solar modulation ability whilst maintaining a high luminous transmittance and a low transition temperature. Perovskite material shows a significant thermochromism in the visible and ultraviolet region. Since half of the photons lie in this spectral region, a high solar modulation can be achieved by perovskites. The material was optimized by varying the spin speed in the fabrication process as well as the mixing ratio between precursors. The optimized sample exhibits a solar modulation ability of 25.5% with luminous transmittance of 34.3% and higher than 85% in the hot (80 °C) and cold (25 °C) states, respectively, making this material suitable for practical device applications. The hysteresis loop, the transition temperature as well as transition time in relation to the relative humidity of a perovskite smart window during the heating and cooling process are investigated in this study. From field tests results, the perovskite smart window can help reduce the indoor air temperature by about 2.5 °C compared to a normal window. Overall, based on the results obtained in this study, the perovskite thermochromic smart window has potential to achieve excellent thermochromic properties, providing an alternative to alleviate the high energy consumed in buildings. | - |
dc.language | eng | - |
dc.publisher | Pergamon. The Journal's web site is located at http://www.elsevier.com/locate/apenergy | - |
dc.relation.ispartof | Applied Energy | - |
dc.subject | Energy efficient glazing | - |
dc.subject | Perovskite | - |
dc.subject | Smart window | - |
dc.subject | Thermochromism | - |
dc.subject | Thin film | - |
dc.title | Perovskite thermochromic smart window: Advanced optical properties and low transition temperature | - |
dc.type | Article | - |
dc.identifier.email | Chao, CYH: cyhchao@hku.hk | - |
dc.identifier.authority | Chao, CYH=rp02396 | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1016/j.apenergy.2019.113690 | - |
dc.identifier.scopus | eid_2-s2.0-85070518735 | - |
dc.identifier.hkuros | 307897 | - |
dc.identifier.volume | 254 | - |
dc.identifier.spage | article no. 113690 | - |
dc.identifier.epage | article no. 113690 | - |
dc.identifier.isi | WOS:000497974600084 | - |
dc.publisher.place | United Kingdom | - |
dc.identifier.issnl | 0306-2619 | - |