Issue 8, 2021

Bulk halide perovskites as triplet sensitizers: progress and prospects in photon upconversion

Abstract

Triplet–triplet annihilation-based photon upconversion (TTA-UC) is a promising mechanism for harvesting lower energy photons by converting them to a higher energy. Photons generated from this process can be used for numerous applications, including photovoltaics, infrared sensing and imaging, biomedicine and photochemical reactions. Recently, bulk metal halide perovskite semiconductors have been introduced as triplet sensitizers for the TTA-UC process. While relatively efficient upconversion has been achieved at low fluences, the full potential of these materials as triplet sensitizers has not been unlocked. Here, we examine four pathways for device optimization and improvements, while discussing relevant works and potential further improvements. Finally, we discuss the outlook and bright future of such perovskite materials as triplet sensitizers and their important role in solid-state upconversion applications.

Graphical abstract: Bulk halide perovskites as triplet sensitizers: progress and prospects in photon upconversion

Article information

Article type
Review Article
Submitted
19 Janv. 2021
Accepted
18 Febr. 2021
First published
18 Febr. 2021

J. Mater. Chem. C, 2021,9, 2685-2694

Author version available

Bulk halide perovskites as triplet sensitizers: progress and prospects in photon upconversion

Z. A. VanOrman, H. K. Drozdick, S. Wieghold and L. Nienhaus, J. Mater. Chem. C, 2021, 9, 2685 DOI: 10.1039/D1TC00245G

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