Optical Data Storage and Multicolor Emission Readout on Flexible Films Using Deep-Trap Persistent Luminescence Materials
Optical Data Storage and Multicolor Emission Readout on Flexible Films Using Deep-Trap Persistent Luminescence Materials
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使用深陷阱持久发光材料在柔性薄膜上进行光学数据存储和多色发射读出
DOI：
10.1002/adfm.201705769
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发表时间：
2018
影响因子：
19
通讯作者：
Rong-Jun Xie
中科院分区：
文献类型：
--
作者：
Yixi Zhuang;Le Wang;Ying Lv;Tian-Liang Zhou;Rong-Jun Xie
每年产生的快速增长的数据量迫切需要超大容量的存储介质。然而，传统光学数据存储介质中的2D空间分辨率几乎已经达到极限。存储容量的进一步扩大可能依赖于包含多路复用信息维度的下一代数据存储材料的开发。在此，开发了一系列新型深陷阱持久发光材料（Sr 1-xBax）Si 2 O2 N2：Eu/Yb，Dy，在整个可见光区具有多色发射，并展示了基于这些材料中的光子捕获和去捕获过程的逐位光学数据存储和读出策略。光学数据可以通过市售的405 nm激光在柔性薄膜上方便地编码，并通过加热或980 nm激光扫描解码。解码的信息包含可调谐的光谱特性，这允许发射强度复用或发射波长复用。这种存储和读出策略不仅在多维光信息存储中具有广阔的应用前景，而且为先进的显示技术和信息安全系统提供了新的机遇。
The fast‐growing amount of data that is produced every year creates an urgent need for ultracapacity storage media. However, 2D spatial resolution in the conventional optical data storage media has almost reached the limit. Further enlargement of storage capacity may rely on the development of the next‐generation data storage materials containing multiplexed information dimensions. Herein, a series of novel deep‐trap persistent luminescence materials (Sr1‐xBax)Si2O2N2:Eu/Yb,Dy with multicolor emissions in the whole visible region is developed and demonstrated a bit‐by‐bit optical data storage and readout strategy based on photon trapping and detrapping processes in these materials. Optical data can be handily encoded on a flexible film by a commercially available 405 nm laser and decoded by heating or by 980 nm laser scanning. The decoded information contains tunable spectral characteristics, which allows for the emission–intensity–multiplexing or emission–wavelength–multiplexing. The storage and readout strategy not only shows a great promise in the application of multidimensional rewritable optical data storage, but also opens new opportunities for advanced display technology and information security system.