Scholarly Publications - UNAM
Permanent URI for this collectionhttps://hdl.handle.net/11693/117076
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Browsing Scholarly Publications - UNAM by Author "(Makarov, Sergey V."
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Item Open Access Photoinduced transition from quasi-two-dimensional Ruddlesden-Popper to three-dimensional halide perovskites for the optical writing of multicolor and light-erasable images(American Chemical Society, 2024-01-10) Anoshkin, Sergey S.; Shishkin, Ivan I.; Markina, Daria I.; Logunov, Lev S.; Demir, Hilmi Volkan; Rogach, Andrey L.; Pushkarev, Anatoly P.; (Makarov, Sergey V.Optical data storage, information encryption, and security labeling technologies require materials that exhibit local, pronounced, and diverse modifications of their structure-dependent optical properties under external excitation. Herein, we propose and develop a novel platform relying on lead halide Ruddlesden-Popper phases that undergo a light-induced transition toward bulk perovskite and employ this phenomenon for the direct optical writing of multicolor patterns. This transition causes the weakening of quantum confinement and hence a reduction in the band gap. To extend the color gamut of photoluminescence, we use mixed-halide compositions that exhibit photoinduced halide segregation. The emission of the films can be tuned across the range of 450-600 nm. Laser irradiation provides high-resolution direct writing, whereas continuous-wave ultraviolet exposure is suitable for recording on larger scales. The luminescent images created on such films can be erased during the visualization process. This makes the proposed writing/erasing platform suitable for the manufacturing of optical data storage devices and light-erasable security labels.