"

Cookies ussage consent

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

I agree, do not show this message again.

Electrical and optical properties of n-CdSe

CHARITA MEHTA1, JASIM M. ABBAS1, G. S. S. SAINI1, S. K. TRIPATHI1,*

Affiliation

  1. Department of Physics, Centre of Advanced Study in Physics, Panjab University, Chandigarh- 160 014, India

Abstract

Nanocrystalline semiconductor offers a wide variety of possible applications in electronics, optoelectronics and photonics. CdSe (Eg = 1.7 eV), a direct band gap semiconductor, is chemically grown in an aqueous alkaline medium using sodium selenosulphate as Se2- source. The formation of CdSe nanocrystals has been confirmed with the help of infrared (IR) spectroscopy by observing bands corresponding to the multi phonon absorption. n-CdSe thin films have been deposited at different temperatures of bath solution. Electrical, optical and structural studies have been done on these thin films. The shift in Eg (~ 0.5 eV) and the variation of grain size of CdSe crystallite from 30 Ǻ to 40 Ǻ has been observed when the temperature of the bath varies from 26 oC to 80 oC. These changes are attributed to the quantum size effect in nanocrystalline semi conducting films..

Keywords

Chemical bath deposition, Nanocrystalline, Optical properties.

Submitted at: April 28, 2008
Accepted at: Aug. 28, 2008

Citation

CHARITA MEHTA, JASIM M. ABBAS, G. S. S. SAINI, S. K. TRIPATHI, Electrical and optical properties of n-CdSe, Journal of Optoelectronics and Advanced Materials Vol. 10, Iss. 9, pp. 2461-2465 (2008)