Abstract 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.

中文翻译：

---

合成钻石的高效磷光

摘要 合成钻石因其独特的光物理性质和广泛的潜在应用而引起了人们的极大兴趣，但其磷光现象和机制却很少受到关注。在这里，通过高压和高温方法合成了寿命为 5.4 s 的磷光金刚石，在 230 nm 的激发波长下，金刚石在 468 nm 附近显示出发射带。磷光钻石在常温常压下量子产率约为4.7%，这是钻石量子产率的首次报道。独特的磷光发射可归因于铁相关供体和硼相关受体的辐射复合。