Highly stable perovskite nanogels as inks for multicolor luminescent authentication applications. Issue 43 (18th October 2018)

• Record Type: Journal Article
• Authors: Wang, Hui; Yin, Xiong; Wang, Leyu
• Is Part Of: Journal of materials chemistry. Volume 6:Issue 43(2018)
• Page Start: 11569
• Page End: 11574
• Publication Date: 2018-10-18
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c8tc04420a
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : Full-spectral emissive perovskite nanogels present outstandingly improved photo-stability, thermal-stability and humidity-stability for anti-counterfeiting two-dimensional barcode application. Abstract : Preparation of multiplexing optical tags with well-resolved emissions is particularly intriguing in anti-counterfeiting and authentication applications given that broad and overlapping emission would severely impair the encoding capacities and performance. Bright and sharp multicolor emission of metal halide perovskite quantum dots (PQDs) makes them good alternatives, but the weak stability potentially hampers their practical implications. We here developed a novel strategy for synthesizing a full-spectral emissive perovskite gel with greatly improved photo-stability, thermal-stability and humidity-stability by embedding PQDs in a pre-polymerized polymer gel at room temperature and further employed it as multicolor ink for printing anti-counterfeiting two-dimensional barcodes.