Thermochromic Metal Halide Perovskite Windows with Ideal Transition Temperatures: arXiv:2211.03028 [physics.app-ph]

Bryan Rosales, Janghyun Kim, Vincent Wheeler, Laura Crowe, Kevin Prince, Mirzo Mirzokarimov, Tom Daligault, Adam Duell, Colin Wolden, Laura Schelhas, Lance Wheeler

Research output: Contribution to journalArticle

Abstract

Urban centers across the globe are responsible for a significant fraction of energy consumption and CO2 emission. As urban centers continue to grow, the popularity of glass as cladding material in urban buildings is an alarming trend. Dynamic windows reduce heating and cooling loads in buildings by passive heating in cold seasons and mitigating solar heat gain in hot seasons. In this work, we develop a mesoscopic building energy model that demonstrates reduced building energy consumption when thermochromic windows are employed. Savings are realized across eight disparate climate zones of the United States. We use the model to determine the ideal critical transition temperature of 20 to 27.5 degrees C for thermochromic windows based on metal halide perovskite materials. Ideal transition temperatures are realized experimentally in composite metal halide perovskite film composed of perovskite crystals and an adjacent reservoir phase. The transition temperature is controlled by co-intercalating methanol, instead of water, with methylammonium iodide and tailoring the hydrogen-bonding chemistry of the reservoir phase. Thermochromic windows based on metal halide perovskites represent a clear opportunity to mitigate the effects of energy-hungry buildings.
Original languageAmerican English
Number of pages25
JournalArXiv.org
DOIs
StatePublished - 2022

Bibliographical note

See NREL/JA-5900-85376 for paper as published in Advanced Energy Materials

NREL Publication Number

  • NREL/JA-5900-81170

Keywords

  • buildings
  • perovskite
  • switchable
  • thermochromic
  • windows

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