Photochromism of Sm3+-doped perovskite oxide: Ultrahigh-contrast optical switching and erasable optical recording

Photochromism of Sm3+-doped perovskite oxide: Ultrahigh-contrast optical switching and erasable optical recording
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Sm3 掺杂钙钛矿氧化物的光致变色:超高对比度光学开关和可擦除光学记录

DOI:
10.1016/j.jlumin.2021.117922
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发表时间:
2021-05
影响因子:
3.6
通讯作者:
Hu Yihua
Hu Yihua
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Zhang Ruiting;Jin Yahong;Yuan Lifang;Wu Haoyi;Xiong Guangting;Wang Chuanlong;Chen Li;Hu Yihua

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无机光致变色材料由于其良好的抗疲劳性能和优异的稳定性,在光开关和可擦除光记录方面具有巨大的潜力,越来越受到人们的关注。然而,降移发射基光致变色材料的光开关对比度仍然较差。为了解决这一问题,在本工作中,我们报道了一种具有良好抗疲劳性的Sm3+掺杂钙钛矿氧化物(BaZrO3)光致变色材料。结合红光发射和光致变色特性,实现了迄今为止降移发射基光致变色材料对比度最高达90.05%的光开关。结果表明,该方法具有良好的重现性。详细讨论了光致发光、光致变色和光开关的机理。最后,作为概念验证,利用所获得的BaZrO3: Sm3+制备光致变色光盘和柔性薄膜,也实现了可擦除光记录的实现。
Inorganic photochromic materials, exhibiting great potential for optical switcher and erasable optical recording, have attracted more and more attention due to their robust fatigue resistance and excellent stability. However, the optical switching contrast of downshifting emission-based photochromic materials is still inferior. To address this issue, in this work we report a Sm3+-doped perovskite oxide (BaZrO3) photochromic material with good fatigue resistance. With the combination of red emission and photochromism properties, optical switching with the highest contrast value of 90.05% for the downshifting emission-based photochromic material till now is achieved. The good reproducibility is demonstrated. The mechanisms of photoluminescence, photochromism and optical switching are discussed in detail. Finally, as a proof-of-concept, the implementation of erasable optical recording is also realized through the fabrication of photochromic discs and flexible films using the as-obtained BaZrO3: Sm3+.
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