东北师范大学刘益春团队通过释放上转换充电的潜力，实现荧光粉快速高分辨率的光存储。相关论文于2025年3月4日发表在《光：科学与应用》杂志上。

目前利用磷光体介质的光存储技术在实现可见光或红外光的快速精确数据记录方面面临挑战，主要是由于传统充电技术的限制。研究组介绍了一种称为上转换充电（UCC）的尖端方法来解决这些挑战，实现了荧光粉中快速和高分辨率的数据存储。

该研究侧重于存储荧光粉中UCC的独特两步电离和非线性充电特性，特别是在没食子酸酯组合物Gd₃Ga₅O₁₂:Cr³⁺中。值得注意的是，这种技术能够以高分辨率进行数据写入，当使用配备可见光发射二极管激光器的便携式激光雕刻机时，每比特只需要0.01秒的曝光。该策略不仅提高了记录效率，而且确保了长期数据保留和卓越的可重写性。

此外，研究组通过热激发光和光激发光说明了UCC存储在各种材料系统中的多功能性。该成果突出了UCC方法在推进光存储应用方面的变革潜力，为信息存储解决方案的开发提供了重大改进。

附：英文原文

Title: Unlocking the potential of up-conversion charging for rapid and high-resolution optical storage with phosphors

Author: Chen, Lu, Liu, Xueqing, Liu, Feng, Liao, Chuan, Zhang, Liangliang, Zhang, Jiahua, Wang, Xiao-jun, Liu, Yichun

Issue&Volume: 2025-03-04

Abstract: Current optical storage technologies utilizing phosphor media face challenges in achieving rapid and precise data recording with visible or infrared light, primarily due to the constraints of traditional charging techniques. Here, we introduce a cutting-edge method termed up-conversion charging (UCC) to address these challenges, enabling rapid and high-resolution data storage in phosphors. Our study focuses on the unique two-step ionization and non-linear charging characteristics of UCC in storage phosphors, specifically in a gallate composition Gd3Ga5O12:Cr3+. Remarkably, this technique enables data writing with high solution, requiring only 0.01s of exposure per bit when utilizing a portable laser engraver equipped with visible-emitting diode lasers. The present strategy not only enhances recording efficiency but also ensures long-term data retention and superior rewritability. Moreover, we illustrate the versatility of UCC storage across various material systems through thermally- and optically-stimulated luminescence. Our outcomes highlight the transformative potential of the UCC method in advancing optical storage applications, offering significant improvements in the development of information storage solutions.

DOI: 10.1038/s41377-025-01746-9

Source: https://www.nature.com/articles/s41377-025-01746-9