University of Surrey

Test tubes in the lab Research in the ATI Dance Research

Bandgap enhancement of layered nanocrystalline silicon from excimer laser crystallization

Adikaari, AADT, Carey, JD, Stolojan, V, Keddie, JL and Silva, SRP (2006) Bandgap enhancement of layered nanocrystalline silicon from excimer laser crystallization NANOTECHNOLOGY, 17 (21). pp. 5412-5416.

[img] Text
Nanotech 17.pdf
Restricted to Repository staff only
Available under License : See the attached licence file.

Download (597kB)
[img] Text (licence)
Restricted to Repository staff only

Download (33kB)


Excimer laser irradiation is used to crystallize hydrogenated amorphous silicon thin films. The resulting films show a stratified microstructure with a crystalline volume fraction of up to 90%. There is a range of excimer laser energy that can produce stratified nanocrystalline silicon with a Tauc gap as high as 2.2 eV. This value is greater than that of amorphous or crystalline silicon and is contrary to that predicted from the theoretical analysis of mixed-phase silicon thin films. The phenomenon is explained by employing transmission electron microscopy and spectroscopic ellipsometry, and the observed bandgap enhancement is associated with quantum confinement effects within the nanocrystalline silicon layers, rather than an impurity variation.

Item Type: Article
Authors :
Adikaari, AADT
Carey, JD
Stolojan, V
Keddie, JL
Silva, SRP
Date : 14 November 2006
DOI : 10.1088/0957-4484/17/21/021
Uncontrolled Keywords : Science & Technology, Technology, Physical Sciences, Nanoscience & Nanotechnology, Materials Science, Multidisciplinary, Physics, Applied, Science & Technology - Other Topics, Materials Science, Physics, THIN-FILM TRANSISTORS, AMORPHOUS-SILICON, POLYCRYSTALLINE SILICON, SI-H
Related URLs :
Depositing User : Symplectic Elements
Date Deposited : 28 Mar 2017 13:43
Last Modified : 31 Oct 2017 14:56

Actions (login required)

View Item View Item


Downloads per month over past year

Information about this web site

© The University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom.
+44 (0)1483 300800