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Oxygen-assisted preparation of mechanoluminescent ZnS:Mn for dynamic pressure mapping
Nano Research ( IF 9.9 ) Pub Date : 2018-03-19 , DOI: 10.1007/s12274-017-1813-y
Xiandi Wang , Rui Ling , Yufei Zhang , Miaoling Que , Yiyao Peng , Caofeng Pan

Mechanoluminescent materials that convert mechanical stimuli to light emission have attracted extensive attention for potential applications in human-machine interactions. Here, we report a simple and available novel approach for the oxygen-assisted preparation of ZnS:Mn particles by solid-state reaction at atmospheric pressure without the formation of the corresponding oxides. The existence of O2 has a positive impact on the formation of S vacancies in wurtzite-phase ZnS, leading to the introduction of Mn2+ ion luminescent centers and shallow donor levels, which can improve the electron-hole recombination rate. The O2 ratio and Mn2+ ion doping concentration have significant effects on the luminous efficiency, which is optimal at 1%–20% and 1 at.%–2 at.% respectively. In addition, a device based on the piezo-photonic effect with excellent pressure sensitivity of 0.032 MPa−1 was fabricated, which can map the two-dimensional pressure distribution ranging from 2.2 to 40.6 MPa in situ. This device can be applied to real-time pressure mapping, smart sensor networks, high-level security systems, human-machine interfaces, and artificial skins.

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中文翻译:

氧气辅助制备的机械发光ZnS:Mn用于动态压力测绘

将机械刺激转换成光的机械发光材料已经引起了人们在人机交互中潜在应用的广泛关注。在这里,我们报告了一种简单且可用的新颖方法,该方法用于在大气压力下通过固​​态反应进行氧辅助制备ZnS:Mn颗粒而没有形成相应的氧化物。O 2的存在对纤锌矿相ZnS中S空位的形成有积极的影响,从而导致Mn 2+离子发光中心的引入和较浅的施主能级的引入,可以提高电子-空穴的复合率。O 2比和Mn 2+离子掺杂浓度对发光效率有显着影响,最佳浓度分别为1%–20%和1 at。%– 2 at。%。另外,制造了基于压电光子效应的装置,其具有0.032 MPa -1的优异的压敏性,其可以原位映射从2.2到40.6 MPa的二维压力分布。该设备可应用于实时压力映射,智能传感器网络,高级安全系统,人机界面和人造皮肤。

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更新日期:2018-03-19
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