Synthesis and characterization of PVP-capped CdSe nanoparticles embedded in PVA matrix for photovoltaic application

被引：88

作者：

Mahmoud, Waleed E. ^{[1
]}

El-Mallah, H. M. ^{[2
]}

机构：

[1] Suez Canal Univ, Fac Sci, Dept Phys, Ismailia, Egypt

[2] Suez Canal Univ, Dept Engn Math & Phys, Fac Engn, Port Said, Egypt

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2009年 / 42卷 / 03期

关键词：

SEMICONDUCTOR CLUSTERS; QUANTUM DOTS; OPTICAL-PROPERTIES; NANOCRYSTALS; LUMINESCENCE; ABSORPTION; STABILITY; DEVICES;

D O I：

10.1088/0022-3727/42/3/035502

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Polyvinyl pyrrolidone (PVP) capped cadmium selenide (CdSe) nanoparticles embedded in polyvinyl alcohol (PVA) matrix are reported. PVP-CdSe nanoparticles are prepared by a non-aqueous method wherein cadmium chloride is used as the cadmium source and sodium selenate as the selenium source. The nanocomposites are characterized by x-ray diffraction (XRD) and transmission electron microscopy (TEM) studies. XRD and TEM studies show the formation of cubic CdSe particles with an average size of 2.3 +/- 0.2 nm. The synthesized nanoparticles are dispersed in the PVA matrix and cast as self-standing flexible (PVP-CdSe)-PVA films. These films are characterized by optical absorption spectroscopy, by which optical band energy gaps as well as the average particle size of CdSe nanoparticles were calculated. The I-V characteristic curve of the (PVP-CdSe)-PVA film shows a photovoltaic cell-like behaviour. The electromotive force generated from the (PVP-CdSe)-PVA film as a function of light intensity was also studied.

引用

页数：5

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