Journal
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
Volume 11, Issue 7, Pages 2577-2584Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpclett.0c00034
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Funding
- National Natural Science Foundation of China [51572222, 61601367, 11604265]
- Fundamental Research Funds for Central Universities [3102016ZY028]
- Australian Research Council [DP190103316]
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Organic-inorganic perovskites have attracted increasing attention in recent years owing to their excellent optoelectronic properties and photovoltaic performance. In this work, the prototypical hybrid perovskite CH3NH3PbI3 is turned into a ferromagnetic material by doping Mn, which enables simultaneous control of both charge and spin of electrons. The room-temperature ferromagnetism originates from the double exchange interaction between Mn2+-I--Mn3+ ions. Furthermore, it is discovered that the magnetic field can effectively modulate the photovoltaic properties of Mn-doped perovskite films. The photocurrent of Mn-doped perovskite solar cells increases by 0.5% under a magnetic field of 1 T, whereas the photocurrent of undoped perovskite decreases by 3.3%. These findings underscore the potential of Mn-doped perovskites as novel solution-processed ferromagnetic material and promote their application in multifunctional photoelectric-magnetic devices.
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