Light-Induced Stark Effect and Reversible Photoluminescence Quenching in Inorganic Perovskite Nanocrystals

Cottam, Nathan D.; Zhang, Chengxi; Wildman, Joni L.; Patan�, Amalia; Turyanska, Lyudmila; Makarovsky, Oleg

Abstract

Inorganic perovskite nanocrystals (NCs) have demonstrated a number of unique optical and electronic properties for optoelectronic applications. However, the physical properties of these nanostructures, such as the dynamics of charge carriers on different timescales and their effect on the optical recombination of carriers, are not yet fully understood. This work reports on a slow (>1s) reversible quenching of the NC photoluminescence due to a light-induced Stark effect involving defects on the surface of the NCs and the redistribution of photoexcited carriers onto the NC surface. This phenomenon can influence the operation of optoelectronic devices based on these NCs, including hybrid photosensors based on graphene decorated with inorganic perovskite NCs, revealing their prospects and limitations.

Citation

Cottam, N. D., Zhang, C., Wildman, J. L., Patanè, A., Turyanska, L., & Makarovsky, O. (2021). Light-Induced Stark Effect and Reversible Photoluminescence Quenching in Inorganic Perovskite Nanocrystals. Advanced Optical Materials, 9(13), Article 2100104. https://doi.org/10.1002/adom.202100104

• Journal Article Type: Article
• Acceptance Date: Mar 25, 2021
• Online Publication Date: May 5, 2021
• Publication Date: Jul 5, 2021
• Deposit Date: May 10, 2021
• Publicly Available Date: May 11, 2021
• Journal: Advanced Optical Materials
• Electronic ISSN: 2195-1071
• Publisher: Wiley
• Peer Reviewed: Peer Reviewed
• Volume: 9
• Issue: 13
• Article Number: 2100104
• DOI: https://doi.org/10.1002/adom.202100104
• Public URL: https://nottingham-repository.worktribe.com/output/5521737
• Publisher URL: https://onlinelibrary.wiley.com/doi/10.1002/adom.202100104