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In view of their excellent luminescence properties, nanocrystalline metal halide perovskites have diverse optoelectronic applications, including those related to anticounterfeiting. However, high‐quality optical anticounterfeiting typically requires multiple encryptions relying on several optical modes to ensure information security. Herein, an efficient anticounterfeiting strategy based on dual optical encryption is realized by combining up‐ and downconversion luminescence in a nanocomposite with NaYF4 : Er3+,Yb3+ as core and a CsMnCl3 as shell. The emission color of this nanocomposite depends on the penetration depth of incident radiation and can be changed by varying the excitation source (980 nm laser or UV light) to produce different luminescent patterns. This feature allows one to effectively improve the anticounterfeiting index and fabricate professional anticounterfeiting materials. [ABSTRACT FROM AUTHOR]

The development of lead‐free perovskite photoelectric materials has been an extensive focus in the recent years. Herein, a novel one‐dimensional (1D) lead‐free CsMnCl3(H2O)2 single crystal is reported with solvatochromic photoluminescence properties. Interestingly, after contact with N,N‐dimethylacetamide (DMAC) or N,N‐dimethylformamide (DMF), the crystal structure can transform from 1D CsMnCl3(H2O)2 to 0D Cs3MnCl5 and finally transform into 0D Cs2MnCl4(H2O)2. The solvent‐induced crystal‐to‐crystal phase transformations are accompanied by loss and regaining of water of crystallization, leading to the change of the coordination number of Mn2+. Correspondingly, the luminescence changes from red to bright green and finally back to red emission. By fabricating a test‐paper containing CsMnCl3(H2O)2, DMAC and DMF can be detected quickly with a response time of less than one minute. These results can expand potential applications for low‐dimensional lead‐free perovskites. [ABSTRACT FROM AUTHOR]

Berichtigung: Solvatochromic Photoluminescent Effects in All-Inorganic Manganese(II)-Based Perovskites by Highly Selective Solvent-Induced Crystal-to-Crystal Phase Transformations Lead-free materials, luminescence, manganese, phase transitions, low-dimensional perovskites Keywords: lead-free materials; low-dimensional perovskites; luminescence; manganese; phase transitions EN lead-free materials low-dimensional perovskites luminescence manganese phase transitions 25387 25387 1 11/17/21 20211122 NES 211122 In this Research Article one of the affiliations for the authors Prof. Ziyong Cheng and Prof. Jun Lin was inadvertently omitted. [Extracted from the article]

Keywords: lead-free materials; low-dimensional perovskites; luminescence; manganese; phase transitions EN lead-free materials low-dimensional perovskites luminescence manganese phase transitions 25183 25183 1 11/17/21 20211122 NES 211122 In this Research Article one of the affiliations for the authors Prof. Ziyong Cheng and Prof. Jun Lin was inadvertently omitted. Corrigendum: Solvatochromic Photoluminescent Effects in All-Inorganic Manganese(II)-Based Perovskites by Highly Selective Solvent-Induced Crystal-to-Crystal Phase Transformations Manganese, phase transitions, luminescence, lead-free materials, low-dimensional perovskites. [Extracted from the article]