30 January 2024 | Sai Liu, Yang Li, Ying Wang, Yuwei Du, Kin Man Yu, Hin-Lap Yip, Alex K. Y. Jen, Baoling Huang, Chi Yan Tso
This study presents a novel thermochromic perovskite smart window (MTPW) inspired by the structure of medical masks. The MTPW consists of three layers: a bottom layer of thermochromic perovskite, a middle layer of a transparent protection buffer, and a top layer of a superhydrophobic layer. This design enables sufficient water vapor transmission to trigger thermochromism while effectively repelling detrimental water and moisture, enhancing the window's durability. The MTPW demonstrates superior hydrophobicity, maintaining a solar modulation ability above 20% during a 45-day aging test, with a decay rate 37 times lower than that of a pristine thermochromic perovskite window (TPW). It also significantly reduces lead ion leakage by 66 times and reduces optical haze from 90% to 30%, improving visual clarity. The MTPW's all-solution-based fabrication process, ease of scalability, and improved performance make it a promising material for green building technologies, offering enhanced energy efficiency and environmental stability.This study presents a novel thermochromic perovskite smart window (MTPW) inspired by the structure of medical masks. The MTPW consists of three layers: a bottom layer of thermochromic perovskite, a middle layer of a transparent protection buffer, and a top layer of a superhydrophobic layer. This design enables sufficient water vapor transmission to trigger thermochromism while effectively repelling detrimental water and moisture, enhancing the window's durability. The MTPW demonstrates superior hydrophobicity, maintaining a solar modulation ability above 20% during a 45-day aging test, with a decay rate 37 times lower than that of a pristine thermochromic perovskite window (TPW). It also significantly reduces lead ion leakage by 66 times and reduces optical haze from 90% to 30%, improving visual clarity. The MTPW's all-solution-based fabrication process, ease of scalability, and improved performance make it a promising material for green building technologies, offering enhanced energy efficiency and environmental stability.