College of Chemistry and Environmental Science , Hebei University , Baoding 071002 , P. R. China.
Institute for Integrative Nanosciences , IFW Dresden , Dresden 01069 , Germany.
ACS Appl Mater Interfaces. 2018 Sep 19;10(37):31697-31703. doi: 10.1021/acsami.8b10790. Epub 2018 Sep 5.
Smart window is a promising green technology with feature of tunable transparency under external stimuli to manage light transmission and solar energy. However, more functions based on the intelligent management of the solar spectrum need to be integrated into present smart windows. In this work, a dual-function smart window is fabricated by pairing the luminescent switch with the electrochromic window. The dual function is based on a single fluorine doped tin oxide coated glass functionalized with tungsten oxide and copper nanocluster, among which tungsten oxide serves as an electrochromic material and copper nanocluster provides photoinduced luminescence. Along with the regulation of the visible light based on the electrochromism of the window, the luminescence can be finely switched on and off, which establishes a pair of reversible states ("on" and "off") for the dual-function smart window. The contrast between two states reaches 88%. Furthermore, the manipulation of dual-function smart window is highly reversible with a short response time of 12.6 s. This prototype of dual-function smart window paves the way for developing multifunctional smart windows by integrating different functional materials into one smart window based on the rational management of the solar spectrum.
智能窗是一种很有前途的绿色技术，具有在外部刺激下可调透光的特性，可用于控制光传输和太阳能。然而，需要将更多基于智能管理太阳光谱的功能集成到现有的智能窗中。在这项工作中，通过将发光开关与电致变色窗配对，制造了一种双功能智能窗。该双功能基于一层氟化锡氧化物涂覆玻璃，功能化的氧化钨和铜纳米团簇，其中氧化钨作为电致变色材料，铜纳米团簇提供光致发光。随着基于窗口电致变色的可见光调节，发光可以精细地开启和关闭，为双功能智能窗建立了一对可逆状态（“开”和“关”）。两种状态之间的对比度达到 88%。此外，双功能智能窗的操作具有高度的可逆性，响应时间短至 12.6 秒。这种双功能智能窗的原型为通过合理管理太阳光谱，将不同功能材料集成到一个智能窗中，开发多功能智能窗铺平了道路。
