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Optical study of ZnP2 nanoparticles in zeolite Na-X

机译:Na-X沸石中ZnP2纳米粒子的光学研究

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Nanoparticles of the II-V semiconductor (ZnP2) were prepared and investigated. ZnP2 nanoparticles were incorporated into zeolite Na-X matrix. Absorption. diffuse reflection (DR) and photoluminescence (PL) spectra of ZnP2 nanoparticles were measured at the temperature of 77 K. Five bands B-1-B-5 are observed in both the DR and PL spectra demonstrating the blue shift from the line of free exciton in bulk crystal. We attribute the B-1-B-5 bands to five stable nanoparticles with size le-ss than the size of zeolite Na-X supercage. We observed Stokes shift of the PL bands with respect to the absorption bands. This dependence of C this Stokes shift on the particle size is nonmonotonic. (C) 2004 Elsevier Ltd. All rights reserved.
机译:制备并研究了II-V半导体(ZnP2)的纳米颗粒。 ZnP2纳米粒子被掺入沸石Na-X基质中。吸收。在77 K的温度下测量了ZnP2纳米粒子的漫反射(DR)和光致发光(PL)光谱。在DR和PL光谱中均观察到5个波段B-1-B-5,表明从自由线开始出现蓝移晶体中的激子。我们将B-1-B-5谱带归因于五个稳定的纳米粒子,其大小比Na-X沸石超笼的大小小。我们观察到PL谱带相对于吸收谱带的斯托克斯位移。这种斯托克斯位移对C的这种依赖性是非单调的。 (C)2004 Elsevier Ltd.保留所有权利。

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