Perovskite thermochromic smart window: Advanced optical properties and low transition temperature

Zhang, Y.; Tso, Chi Yan; Iñigo, J.S.; Liu, Sai; Miyazaki, H.; Chao, Christopher Yu Hang; Yu, K. M.

doi:10.1016/j.apenergy.2019.113690

Cited by 111 publications

(93 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Recently, different TC materials have been applied to smart windows such as the vanadium dioxide (VO 2 ) (Warwick and Binions 2014), hydrogels, liquid crystals, ionic liquids (Ke et al 2018), and perovskite (Zhang et al 2019). VO 2 based nanocrystals, ionic liquids, and perovskite TC windows show a similar behaviour as they act directly on the spectral absorbance, tuning the absorbance intensity or shifting the absorbance peak through the crystal phase transition.…”

Section: Intrinsic Control Systems Thermochromic Windowsmentioning

confidence: 99%

A Review of Smart and Responsive Building Technologies and their Classifications

Carlucci

2021

Future Cities and Environment

View full text Add to dashboard Cite

The high impact of the building sector on global greenhouse gases (GHG) emissions, has focused the attention on the energetic behaviour of the built environment. Starting from the second half of 20 th century an increasing attention on the insulation of building envelopes has been paid trying to maximize the indoor-outdoor disconnection. Nowadays, one of the main deficiencies of traditional buildings lies in the rivalry between their static behaviour and the dynamic external environment. The increasing awareness that responsive buildings can provide significant improvements in energy efficiency and internal comfort has recently led to a quick spread of innovative technologies, tools, and research topics. The aim of this review is to provide a broad overview of the available and most promising responsive technologies applied to highly performant buildings with a particular focus on building envelopes. Firstly, an introduction of the energy context and of the spread of adaptive technology is presented. Then, an analysis of the existing nomenclature and classification systems is provided to introduce the detailed review of the technologies.

show abstract

Section: Intrinsic Control Systems Thermochromic Windowsmentioning

confidence: 99%

A Review of Smart and Responsive Building Technologies and their Classifications

Carlucci

2021

Future Cities and Environment

View full text Add to dashboard Cite

show abstract

“…Materials that can alter their optical properties in reaction to external stimuli have received considerable attention as they can be used for a variety of applications, including displays, [1][2][3][4] "smart" windows, [5][6][7] and luminescent solar concentrators (LSCs). [8][9][10][11] More recent applications under consideration include greenhouses, [12][13][14] camouflage, [15,16] and sensors.…”

Section: Introductionmentioning

confidence: 99%

Color–Tunable Triple–State “Smart” Window

Timmermans

Schenning

et al. 2021

Advanced Photonics Research

View full text Add to dashboard Cite

Materials that rapidly change their optical properties in response to external stimuli are crucial for displays and “smart” window applications. Herein, a fluorescent red dye modified with liquid crystal (LC) side chains is described to be interactive with a LC host, resulting in a color‐tunable triple‐state smart window. The dye solubilizes in the LC matrix with increasing temperature, resulting in a red‐colored, absorbing state, recovering transparency again by reaggregation of the dye within minutes upon cooling. This dye is used to fabricate a device that can be electrically switched from a red‐colored, absorbing state to an intermediate scattering state and at greater electrical fields, a transparent state. Using a second dichroic fluorescent dye, heating the device transitions the window's color from yellow/green to red. The multiresponsive optical changes could find applications in many fields, including displays, smart windows, electricity generation, and signage.

show abstract

“…Smart window refers to a new type of window that can reversibly regulate the solar modulation into buildings or cars according to external stimuli, such as temperature, electricity, and light. [5,6] Consequently, according to the category of external stimuli, smart windows can be divided into thermochromic smart windows, [7][8][9] electrochromic smart windows, [10,11] photochromic smart windows, [12,13] etc. Compared with the other two smart windows, thermochromic smart window is identified as an appropriate candidate for smart window because it has no extra energy consumption and the structure is simple.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of FTO/PNIPAm/FTO Electrical‐Thermal Dual‐Response Smart Window for Solar Radiation Management in the Full Temperature Range**

et al. 2021

View full text Add to dashboard Cite

Dual-response smart window, which can respond to two external stimuli simultaneously or separately, has more solar adjustment modes and a wider range of solar radiation adjustment. In this paper, a double-layer fluorine-tin oxide (FTO) electrical-thermal mold was presented, and poly(Nisopropylacrylamide) (PNIPAm) hydrogel was encapsulated in the mold to form an electric-thermal dual-response smart window. The electrical response refers to the electrothermal conversion characteristics of the double-layer FTO mold used to compensate for the insufficient thermochromic performance of the PNIPAm hydrogel when temperature is between 25°C and 32°C, rather than electrochromic properties. Finally, when the applied voltage reaches 5 V, the dual-response smart window achieves a high solar modulation ability (ΔT sol ) of 26.51 %. In addition, it can be concluded that a 5 V of applied voltage is adequate for the dual-response smart window (25 mm × 25 mm × 2.2 mm) to exhibit excellent ΔT sol and extremely fast response speed by the test of the electrothermal conversion performance, transparency change during the heating process, and UV-Vis-NIR transmittance spectra. Furthermore, the thermal management tests and cyclic stability tests indicate that the smart window has a potential energy saving effect and environmental tolerance. The prepared smart window enables PNIPAm hydrogel to manage solar radiation well in the entire ambient temperature range actively or passively.

show abstract

Perovskite thermochromic smart window: Advanced optical properties and low transition temperature

Cited by 111 publications

References 41 publications

A Review of Smart and Responsive Building Technologies and their Classifications

A Review of Smart and Responsive Building Technologies and their Classifications

Color–Tunable Triple–State “Smart” Window

Fabrication of FTO/PNIPAm/FTO Electrical‐Thermal Dual‐Response Smart Window for Solar Radiation Management in the Full Temperature Range**

Contact Info

Product

Resources

About