-
- Home
- Journals
- Bulletin of Materials Science
- Volume 19
- Issue 3
-
Band gap study on zinc-doped cadmium sulphide
T K Anee Francis P Xavier K Balakrishnan
Volume 19 Issue 3 June 1996 pp 443-448
-
-
Fulltext
Click here to view fulltext PDF
Permanent link:
https://www.ias.ac.in/article/fulltext/boms/019/03/0443-0448 -
Keywords
Band gap ;doping ;cadmium sulphide -
Abstract
Photoconductivity studies on cadium sulphide (CdS) crystals grown by chemical vapour transport method were carried out at room temperature (300°C) over the spectral range between the near ultraviolet and the near infrared. Three samples of CdS crystals, viz. undoped CdS crystal, 0·5 ppm zinc doped CdS crystal, and 1 ppm zinc doped CdS crystal, were used. The variation of photocurrent as a function of applied field, intensity of the incident light, response time, and incident wavelength was studied. It was observed that the band gap decreased linearly as doping concentration increased. This is interpreted as being due to doped impurity atoms acting as traps very close to the conduction band edge. The rise and decay times also decreased linearly as doping concentration increased. This has been interpreted due to more free charge carriers being created in the crystal with increase in doping concentration, thereby making the crystal more photosensitive.
-
Author Affiliations
T K Anee1 Francis P Xavier1 K Balakrishnan1 2
- Physics Department, Loyola College, Madras - 600 034, India
- Crystal Growth Centre, Anna University, Madras - 600 025, India
-
Dates
- Published
- June 1996
- Manuscript received
- 18 October 1995
- Manuscript revised
- 23 February 1996
-
-
Bulletin of Materials Science
Volume 45, 2022
All articles
Continuous Article Publishing mode
-
Bulletin of Materials Science | News
-
Dr Shanti Swarup Bhatnagar for Science and Technology
Posted on October 12, 2020Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
Chemical Sciences 2020Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
Physical Sciences 2020 -
Editorial Note on Continuous Article Publication
Posted on July 25, 2019Click here for Editorial Note on CAP Mode
-