Journal
NATURE COMMUNICATIONS
Volume 12, Issue 1, Pages -Publisher
NATURE PORTFOLIO
DOI: 10.1038/s41467-021-23701-z
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Funding
- National Key Research and Development Program of China [2017YFE0131900]
- National Natural Science Foundation of China [91833306, 62075094, 52003118]
- Recruitment Program of Global Experts
- Innovation and Entrepreneurship Program of Jiangsu Province
- Six Talent Peak Project of Jiangsu Province
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Window glazing is crucial in modulating indoor light and heat transmission, beneficial for energy saving. Liu et al. reported a full-frame and high-contrast smart window made of perovskite photovoltaic and ion-gel electrochromic components to achieve self-adjusting brightness and temperature regulation.
Window glazing plays an essential role to modulate indoor light and heat transmission, which is a prospect to save the energy cost in buildings. The latest photovoltachromic technology has been regarded as one of the most ideal solutions, however, to achieve full-frame size (100% active area) and high-contrast ratio (>30% variable in visible wavelength) for smart window applicability is still a challenge. Here we report a photovoltachromic device combining full-transparent perovskite photovoltaic and ion-gel based electrochromic components in a vertical tandem architecture without any intermediated electrode. Most importantly, by accurately adjusting the halide-exchanging period, this photovoltachromic module can realize a high pristine transmittance up to 76%. Moreover, it possesses excellent colour-rendering index to 96, wide contrast ratio (>30%) on average visible transmittance (400-780 nm), and a self-adaptable transmittance adjustment and control indoor brightness and temperature automatically depending on different solar irradiances. Window glazing plays a crucial role in modulating indoor light and heat transmission, which is beneficial for energy saving. Here, Liu et al. report a full-frame and high-contrast smart windows made of perovskite photovoltaic and ion-gel electrochromic components to realise self-adjusting brightness and temperature regulator.
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