Optical Properties from Low Dimensional Semiconductor Nanostructures

Abstract

The optical properties from fabricated low dimensional semiconductor nanostructures such as quantum wires and dots and unintentional nanocrystallites formed in porous silicon have been presented. In particular, the photoelectric emission from low dimensional quantum wires and dots and photoluminescence properties from porous silicon based nanocrystallites as a function of confinement geometry as well as formation parameters have been investigated. The photoemission current density reveals the nature of density of states while the Photoluminescence peak through light on the dependence of band broadening as a function of nanocrystallite dimensions.

Additional information

Notes on contributors

C Bose

Chayanka Bose (born in 1958) received the BTech, MTech and PhD degree in Radio Physics and Electronics from the University of Calcutta in 1981, 1983 and 1990 respectively. Later she served as ‘Scientist B’ in the project ‘Training Programme in Mullimeter Wave Technology’, DOE in the Institute of Radio Physics and Electronics, Calcutta University. She subsequently joined as post-doctoral fellow (UGC) in the Department of Electronics & Tele-communication Engineering Department, Jadavpur University. Presently she is a lecturer in the same department. Her research interests involve study of electronic and optoelectronic properties of low-dimensional structures of semiconductors. She has published 22 papers in international journals.

C K Sarkar

C K Sarkar was born in 1954. He received the MSc degree in Physics in 1973 from Aligarh Muslim University. PhD in Radio Physics and Electronics from Calcutta University in 1979.

Then he joined Clarendon Laboratory, Oxford University and received his DPhil degree from Oxford University in 1983 and later he was also a post doctoral fellow at Clarendon Laboratory and Junior Research Fellow of Wolfson College, Oxford. He was awarded both science scholarship and research fellowship of Royal Commission for the Exhibition of 1851 (UK). He held short visiting appointments in Sweeden, Italy and Germany.

He was appointed as Reader at Electronics at Telecommunication Engineering Department in 1987. In 1995 he joined as a Professor and Head of Physics Department of B E College (DU). Presently he is a Professor of Electronics & Tele-communication Engineering Department. Jadavpur University since 1999. He published about 100 papers in International journal. He also wrote a book on optoelectronics. His current research includes Device modeling and low dimensional semiconductor nanostructures.

H Saha

Hiranmay Saha, currently Professor and Head of the Department of Electronics & Tele-communication Engineering, Jadavpur University and Co-ordinator of the IC Design & Fabrication Centre of the University. He was born in 1946 and obtained his MTech degree from the Institute of Radio Physics and Electronics, Calcutta University in 1967. He was a Professor in the department of Physics, University of Kalyani for about twenty years till 1987 before his joining the department of Electronics and Telecommunication Engineering of Jadavpur University. His PhD thesis was on Solar Cells and Systems. He has published more than 120 technical papers in the areas of Silicon Solar Cell, Porous silicon and other semiconductor devices, integrated circuits and VLSI design and nanoelectronic devices. He is a Fellow of IETE and West Bengal Academy of Science and Technology.