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Low-temperature route to nanoscale P3N5 hollow spheres

机译:纳米级P3N5空心球的低温途径

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Nanoscale hollow spheres of amorphous phosphorus nitride P3N5 were synthesized by reacting PCl3 with NaN3 at 150-250 degreesC. Transmission electron microscope images show that the hollow spheres have a diameter of 150-350 nm, and the thickness of the shell is 20 nm. A very small amount of curly films were also found in the sample prepared at 150 degreesC. The infrared spectrum indicates a high degree of purity. X-ray photoelectron spectroscopy indicates the presence of P and N, with a molar ratio of 1:1.62 for RN. Ultraviolet-visible absorption spectroscopy shows an absorption band at 265-315 nm. Under photoluminescent excitation at 230 nm, the P3N5 emits ultraviolet light at 305 nm. With a band gap of 4.28 eV, the products may be a wide gap semiconductor. A possible mechanism and the influence of temperature on the formation of the hollow spheres are also discussed. [References: 21]
机译:通过使PCl3与NaN3在150-250℃下反应,合成了非晶态氮化磷P3N5的纳米级空心球。透射电子显微镜图像显示,空心球的直径为150-350 nm,壳的厚度为20 nm。在150℃下制备的样品中也发现非常少量的卷曲膜。红外光谱表明纯度高。 X射线光电子能谱表明存在P和N,RN的摩尔比为1:1.62。紫外可见吸收光谱显示在265-315 nm处的吸收带。在230 nm的光致发光激发下,P3N5发出305 nm的紫外光。带隙为4.28 eV时,产品可能是宽间隙半导体。还讨论了可能的机制以及温度对空心球形成的影响。 [参考:21]

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