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Interface Engineering of Lead-Free Perovskite Quantum Dots for High-Performance Data Encryption and Ultralow UV-Light Detection

39 Pages Posted: 9 Jul 2021 Publication Status: Review Complete

See all articles by Jianxin Wang

Jianxin Wang

King Abdullah University of Science and Technology - Advanced Membranes and Porous Materials Center

Yang Zhou

King Abdullah University of Science and Technology - Advanced Membranes and Porous Materials Center

Jun Yin

King Abdullah University of Science and Technology - Advanced Membranes and Porous Materials Center

Luis Gutierrez-Arzaluz

King Abdullah University of Science and Technology - Advanced Membranes and Porous Materials Center

Partha Maity

King Abdullah University of Science and Technology - Advanced Membranes and Porous Materials Center

Cailing Chen

King Abdullah University of Science and Technology - Advanced Membranes and Porous Materials Center

Yu Han

King Abdullah University of Science and Technology - Advanced Membranes and Porous Materials Center

Osman Bakr

King Abdullah University of Science and Technology - KAUST Catalysis Center

Mohamed Eddaoudi

King Abdullah University of Science and Technology - Advanced Membranes and Porous Materials Center

Omar Mohammed

King Abdullah University of Science and Technology - Advanced Membranes and Porous Materials Center

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Abstract

Recently discovered lead-free perovskite quantum dots (QDs) have been touted as a new non-toxic star material that will replace lead-containing perovskite materials. However, its potential applications have not been advanced due to their high density of defect states. On the other hand, it is almost impossible to precisely control the luminescence of organic chromophores from different excited states with different emission colors. Here, we addressed these two great challenges in a single experiment by expanding the utility of lead-free perovskite materials capped with luminescence chromophores into brand new research directions and light-harvesting application. More specifically, we have successfully promoted the use of lead-free perovskite QDs as an efficient and reversible switch for chromophore luminescence for sensitive UV-light detection, with an extremely low detection limit of 74 picoW/cm2 and high-performance data encryption. Our time-resolved absorption and luminescence experiments, and density functional theory calculations have clearly demonstrated that ultrafast electron transfer from the optical excited Cs3MBi2Cl9 perovskite QDs tune and control the nature of neighboring organic chromophore luminescence, leading to different emission colors from different electronic excited states. This variation in interface color in response to different excitation energies provides a feasible strategy for high-performance information anti-counterfeiting and the ultralow detection limit of ultraviolet light.

Keywords: Lead-free perovskite quantum dots, excited state luminescence regulation, electron transfer, charge transfer, UV sensing, data encryption

Suggested Citation

Wang, Jianxin and Zhou, Yang and Yin, Jun and Gutierrez-Arzaluz, Luis and Maity, Partha and Chen, Cailing and Han, Yu and Bakr, Osman and Eddaoudi, Mohamed and Mohammed, Omar, Interface Engineering of Lead-Free Perovskite Quantum Dots for High-Performance Data Encryption and Ultralow UV-Light Detection. Available at SSRN: https://ssrn.com/abstract=3883597 or http://dx.doi.org/10.2139/ssrn.3883597
This version of the paper has not been formally peer reviewed.

Jianxin Wang

King Abdullah University of Science and Technology - Advanced Membranes and Porous Materials Center ( email )

Saudi Arabia

Yang Zhou

King Abdullah University of Science and Technology - Advanced Membranes and Porous Materials Center ( email )

Saudi Arabia

Jun Yin

King Abdullah University of Science and Technology - Advanced Membranes and Porous Materials Center ( email )

Saudi Arabia

Luis Gutierrez-Arzaluz

King Abdullah University of Science and Technology - Advanced Membranes and Porous Materials Center ( email )

Saudi Arabia

Partha Maity

King Abdullah University of Science and Technology - Advanced Membranes and Porous Materials Center ( email )

Saudi Arabia

Cailing Chen

King Abdullah University of Science and Technology - Advanced Membranes and Porous Materials Center ( email )

Saudi Arabia

Yu Han

King Abdullah University of Science and Technology - Advanced Membranes and Porous Materials Center ( email )

Saudi Arabia

Osman Bakr

King Abdullah University of Science and Technology - KAUST Catalysis Center ( email )

Thuwal 23955- 6900
Thuwal, 4700
Saudi Arabia

Mohamed Eddaoudi

King Abdullah University of Science and Technology - Advanced Membranes and Porous Materials Center ( email )

Saudi Arabia

Omar Mohammed (Contact Author)

King Abdullah University of Science and Technology - Advanced Membranes and Porous Materials Center ( email )

Saudi Arabia

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