سال انتشار: ۱۳۸۷

محل انتشار: دومین کنگره بین المللی علوم و فناوری نانو

تعداد صفحات: ۲

نویسنده(ها):

M. H. Yousefi – Nanotechnology Research Group, Faculty of Applied Sciences, Malek-Ashtar University of Technology
S. M. Taheri –
A. A. Khosravi – Department of Physics, Faculty of Sciences, University of Shahed, Tehran, Iran

چکیده:

Nanosized semiconductor has been extensively studied in the last decade, because of the novel optical electronic properties arising from the quantum confinement effect, which vary significantly with the size. A variety of methods have been used in orders to synthesize and control the size of nanoparticles. The size dependent physico-chemical properties of semiconducting nanoparticles are a major issue of research. Many futuristic applications such as optical communication, Light Emitting Diodes (LEDs), chemical sensors and solar cells are based on size quantization[1-5]. Hence free standing nanoparticles are preferred in order to understand basic quantum size effects in these materials. Under a critical size, comparable with bulk bohr exciton radius, the size effect presents. The bohr exciton radius for CdS is recorded on 20Ao . CdS:Fe quantum dots are produced in this work, then their optical and electrical properties are investigated