Journal
ACS ENERGY LETTERS
Volume 6, Issue 11, Pages 4079-4096Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsenergylett.1c02011
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Funding
- NREL's Laboratory Directed Research and Development (LDRD) program
- Center for Hybrid Organic Inorganic Semiconductors for Energy (CHOISE), an Energy Frontier Research Center - Office of Science within the U.S. Department of Energy
- Solar Photochemistry Program of the U.S. Department of Energy, Office of Basic Energy Sciences, Office of Science, Division of Chemical Sciences, Biosciences, and Geosciences
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The emerging class of 2D layered metal-halide perovskites shows important photophysical behavior with potential applications in optoelectronics and photocatalysis. Early studies identified key questions, which recent developments are beginning to address.
Here we review an emerging class of 2D layered metal-halide perovskites that exhibit important photophysical behavior involving inorganic exciton-to-molecular triplet energy flow. These novel systems have potential to impact several energy-related fields and processes, including optoelectronics, photon upconversion strategies, and triplet-based photo-catalysis. Early studies provided initial guidance and revealed 2 several intriguing questions that more recent developments, in terms of both expanded and diversified compositional tuning and more sophisticated characterization, have begun to answer. These questions center around the delicate interplay between physical and electronic structure that is perturbed by choice of perovskite structural motif and organic spacer properties. In addition to their distinct natures, the energy offsets between the metal-halide and molecular excitons can be leveraged for a variety of unique effects and emergent properties, including fast interlayer energy transfer. We review the key advances with an eye toward strategies for controlling photophysical outcomes based on structure-energy-function relationships.
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