Rapid high-contrast reversible coloration of Ba3MgSi2O8:Pr3+ photochromic materials for rewritable light-printing. Issue 48 (6th December 2022)

• Record Type: Journal Article
• Authors: Tang, Wei; Zuo, Chuandong; Ma, Chaoyang; Chang, Chen; Dang, Fan; Liu, Hao; Li, Yingkui; Yuan, Xuanyi; Wen, Zicheng; Wu, Lijun; Cao, Yongge
• Is Part Of: Journal of materials chemistry. Volume 10:Issue 48(2022)
• Page Start: 18375
• Page End: 18384
• Publication Date: 2022-12-06
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/d2tc04137e
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : A "rewritable paper" based on Ba3 MgSi2 O8 inorganic photochromic material presents a series of advantages such as large photochromic contrast (77.1%), fast response time (3 s), strong fatigue resistance and stable physical/chemical properties. Abstract : Designing a "rewritable paper" is an effective and feasible method to solve the environmental problems caused by paper consumption. Inorganic ferroelectrics and robust oxide photochromic materials exhibit excellent reversible print/erase responses, a fast response time, and outstanding physical and chemical stability, which are vital for the implementation of a rewritable paper. However, the application of "rewritable paper" based on these inorganic photochromic materials is limited by its low color contrast. In this study, an ultra-high color contrast of 77.1% is obtained through inducing oxygen vacancy defects in Ba3 MgSi2 O8 :0.5%Pr 3+ by ion doping and sintering in a reducing atmosphere. The rewritable paper fabricated with Ba3 MgSi2 O8 :0.5%Pr 3+ shows a reversible write and erase response under UV illumination and thermal stimulus and also shows the advantages of a fast response time and excellent color reversibility. Furthermore, due to a good overlap between the absorption peak of Ba3 MgSi2 O8 and the excitation/emission peak of Pr 3+, a large luminescence modulation of 97.9% can be obtained in Ba3 MgSi2 O8 :0.5%Pr 3+, which has a wide application prospect in anti-counterfeiting displays and easy-readout/erasable photo-memorizers. The insights provided will support fellow researchers to design high-performance inorganic photochromic systems by inducing oxygen vacancies.