Novel Strategy for Designing Photochromic Ceramic: Reversible Upconversion Luminescence Modification and Optical Information Storage Application in the PbWO4:Yb3+, Er3+ Photochromic Ceramic.,ACS Applied Materials & Interfaces

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Novel Strategy for Designing Photochromic Ceramic: Reversible Upconversion Luminescence Modification and Optical Information Storage Application in the PbWO4:Yb3+, Er3+ Photochromic Ceramic.
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2020-05-01 , DOI: 10.1021/acsami.0c05909
Xue Bai ₁ , Zhengwen Yang ₁ , Yanhong Zhan ₁ , Zhen Hu ₁ , Youtao Ren ₁ , Mingjun Li ₁ , Zan Xu ₁ , Asad Ullah ₁ , Imran Khan ₁ , Jianbei Qiu ₁ , Zhiguo Song ₁ , Bitao Liu ₂ , Yuehui Wang ₃

Affiliation

Inorganic photochromic material is an available medium to obtain optical information storage. The photochromic property of the inorganic material is mainly from the defects of the host. However, the formation of defects in the host is uncontrollable, in particular, the revisable formation and removement of defects are difficult. Thus, there are few inorganic materials with the revisable photochromism upon the entire light stimulation. Therefore, it is an urgent need to find a suitable approach to design inorganic photochromic materials. Here, the photochromic PbWO4:Yb3+, Er3+ ceramic was designed with the help of valence state change of W6+ → W5+ and Pb2+ → Pb4+. Upon the 532 nm laser stimulation, the photochromism of the PbWO4:Yb3+, Er3+ ceramic was obtained based on the Pb2+ + hν (532 nm) → Pb4+ + 2e- and W6+ + e- + hν (532 nm) → W5+ reaction, resulting in the optical information writing. Under the stimulation of an 808 nm laser, the written optical information was erased based on the W5+ + hν (808 nm) → W6+ + e- and Pb4+ + 2e- + hν (808 nm) → Pb2+ reaction. In addition, the photochromism-induced upconversion emission modification was obtained in the PbWO4:Yb3+, Er3+ ceramic, realizing the effective and nondestructive reading out of optical information. The cyclic experiment demonstrated a good reproducibility of both photochromism and upconversion emission modification, exhibiting the potential application of the PbWO4:Yb3+, Er3+ ceramic as the optical data storage medium.

中文翻译：

设计光致变色陶瓷的新策略：可逆上转换发光修饰和光学信息存储在PbWO4：Yb3 +，Er3 +光致变色陶瓷中的应用。

无机光致变色材料是可获得光学信息存储的可用介质。无机材料的光致变色特性主要来自主体的缺陷。然而，主体中缺陷的形成是不可控制的，特别是，缺陷的可修复的形成和去除是困难的。因此，几乎没有无机材料在整个光刺激下具有可修正的光致变色。因此，迫切需要找到一种合适的方法来设计无机光致变色材料。在此，借助W6 +→W5 +和Pb2 +→Pb4 +的价态变化设计了光致变色的PbWO4：Yb3 +，Er3 +陶瓷。在532 nm激光刺激下，基于Pb2 + +hν（532 nm）→Pb4 + + 2e-和W6 + + e- +hν（532 nm）→W5 +反应，获得了PbWO4：Yb3 +，Er3 +陶瓷的光致变色，导致光学信息写入。在808 nm激光的刺激下，基于W5 + +hν（808 nm）→W6 + + e-和Pb4 + + 2e- +hν（808 nm）→Pb2 +反应，擦除了写入的光学信息。此外，在PbWO4：Yb3 +，Er3 +陶瓷中获得了光致变色诱导的上转换发射修饰，从而实现了光学信息的有效无损读取。循环实验显示了光致变色和上转换发射修饰的良好再现性，展示了PbWO4：Yb3 +，Er3 +陶瓷作为光学数据存储介质的潜在应用。此外，在PbWO4：Yb3 +，Er3 +陶瓷中获得了光致变色诱导的上转换发射修饰，从而实现了光学信息的有效无损读取。循环实验显示了光致变色和上转换发射修饰的良好再现性，展示了PbWO4：Yb3 +，Er3 +陶瓷作为光学数据存储介质的潜在应用。此外，在PbWO4：Yb3 +，Er3 +陶瓷中获得了光致变色诱导的上转换发射修饰，从而实现了光学信息的有效无损读取。循环实验显示了光致变色和上转换发射修饰的良好再现性，展示了PbWO4：Yb3 +，Er3 +陶瓷作为光学数据存储介质的潜在应用。

更新日期：2020-04-22

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