磷化铟纳米晶的制备及光学性质研究

阐述了目前国内外的磷化铟纳米晶研究状况。用有机溶剂回流退火法制备出了磷化铟纳米晶，并通过XRD谱计算出平均粒径为55nm。喇曼光谱表明：由于纳米颗粒的量子尺寸效应, 2个散射峰都向低能量方向发生了较大的移动。UV VIS表明样品的吸收边相对于体块InP（970nm）发生了显著的蓝移，说明带隙变宽，表现出明显的量子尺寸效应。PLE谱在380nm时，PL谱峰在573nm时,相对于体块InP的红外区的荧光光谱发光峰发生了显著的蓝移，说明磷化铟纳米晶在光电子器件领域和非线性光学领域有非常好的应用前景。

Preparation of indium phosphide nanocrystallite and investigation of its optical properties

The research status of InP nanocrystallite in the world is described in this paper.The InP nanocrystallite was prepared by reflowing and annealing of organic solvent.The 55 nm average diameter of InP nanocrystallits was obtained by calculating X-ray diffraction spectrum.The Raman spectrum indicates that the two scattering peaks of Raman spectrum move towards low energy because of quantum size effect of nano particles.The obvious blue shift of the sample optical absorption edge relative to the bulk InP(970 nm) was observed via UV-VIS absorption spectrum and it indicates that gap becomes wider and the effect of quantum size becomes obvious.The obvious blue shift of fluorescence spectrum luminescent peak relative to the bulk InP infrared region was observed with PLE spectrum at 380 nm and PL spectrum at 573 nm.It shows that the InP nanocrystallite will have a great potential in the field of photo-electronic devices and nonlinear optics.