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Title: Switchable photovoltaic windows enabled by reversible photothermal complex dissociation from methylammonium lead iodide

Journal Article · · Nature Communications

Materials with switchable absorption properties have been widely used for smart window applications to reduce energy consumption and enhance occupant comfort in buildings. In this work, we combine the benefits of smart windows with energy conversion by producing a photovoltaic device with a switchable absorber layer that dynamically responds to sunlight. Upon illumination, photothermal heating switches the absorber layer - composed of a metal halide perovskite-methylamine complex - from a transparent state (68% visible transmittance) to an absorbing, photovoltaic colored state (less than 3% visible transmittance) due to dissociation of methylamine. After cooling, the methylamine complex is re-formed, returning the absorber layer to the transparent state in which the device acts as a window to visible light. The thermodynamics of switching and performance of the device are described. In conclusion, this work validates a photovoltaic window technology that circumvents the fundamental tradeoff between efficient solar conversion and high visible light transmittance that limits conventional semitransparent PV window designs.

Research Organization:
National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Energy Efficiency and Renewable Energy (EERE), NREL Laboratory Directed Research and Development (LDRD)
Grant/Contract Number:
AC36-08GO28308
OSTI ID:
1413185
Report Number(s):
NREL/JA-5900-68407
Journal Information:
Nature Communications, Vol. 8, Issue 1; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 78 works
Citation information provided by
Web of Science

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  • Christians, Jeffrey A.; Miranda Herrera, Pierre A.; Kamat, Prashant V.
  • Journal of the American Chemical Society, Vol. 137, Issue 4 https://doi.org/10.1021/ja511132a
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Cited By (11)

Responsive Smart Windows from Nanoparticle–Polymer Composites journal June 2019
Rich Chemistry in Inorganic Halide Perovskite Nanostructures journal September 2018
Semitransparent Perovskite Solar Cells: From Materials and Devices to Applications journal August 2019
Stimuli‐Responsive Optical Nanomaterials journal February 2019
High‐Efficiency and Reliable Smart Photovoltaic Windows Enabled by Multiresponsive Liquid Crystal Composite Films and Semi‐Transparent Perovskite Solar Cells journal July 2019
Structural Evolution During Perovskite Crystal Formation and Degradation: In Situ and Operando X‐Ray Diffraction Studies journal November 2019
In Situ/Operando X‐ray Spectroscopies for Advanced Investigation of Energy Materials journal June 2018
On-device lead sequestration for perovskite solar cells journal February 2020
Diameter dependent transparency changes of nanorod-based large-area flexible smart window devices journal January 2018
Two-Dimensional Absorbers for Solar Windows: A Simulation journal August 2019
Recent Developments in Solar Energy-Harvesting Technologies for Building Integration and Distributed Energy Generation journal March 2019

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