Efficient phosphorescence from synthetic diamonds

Efficient phosphorescence from synthetic diamonds
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合成钻石的高效磷光

DOI:
10.1016/j.carbon.2018.01.039
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发表时间:
2018-04
期刊:
影响因子:
10.9
通讯作者:
Shan Chong-Xin
Shan Chong-Xin
中科院分区:
材料科学2区
文献类型:
--
作者:
Su Li-Xia;Zhao Chun-Xiang;Lou Qing;Niu Chun-Yao;Fang Chao;Li Zhen;Shen Cheng-Long;Zang Jin-Hao;Jia Xiao-Peng;Shan Chong-Xin

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人造金刚石以其独特的光物理性质和广泛的应用前景引起了人们的极大兴趣,但其发光现象和发光机理却鲜有人关注。本文采用高压高温法合成了寿命为5.4 的S磷光金刚石,在230 nm的激发波长下,金刚石在468 nm附近有一个发射带。磷光金刚石在常温常压下的量子产额约为4.7%,这是首次报道了金刚石的量子产额。这种独特的磷光发射可以归因于铁相关施主和硼相关受主的辐射复合。
Synthetic diamonds have inspired much interest for their unique photophysical properties and versatile potential applications, but their phosphorescent phenomenon and mechanism have been paid much less attention. Here, phosphorescent diamonds with a lifetime of 5.4 s were synthesized by high-pressure and high-temperature method, and the diamonds exhibit an emission band at around 468 nm under the excitation wavelength of 230 nm. The quantum yield of the phosphorescent diamonds is about 4.7% at ambient temperature and atmosphere, which is the first report on the quantum yield of diamonds. The unique phosphorescence emission can be attributed to the radiative recombination from iron related donors and boron related acceptors.
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