Balamurugan, B. and Aruna, I. and Mehta, B. R. and Shivaprasad, S. M. (2004) Size-dependent conductivity-type inversion in Cu2O nanoparticles. PHYSICAL REVIEW B, 69 (16). p. 165419. ISSN 10980121
Full text is not hosted in this archive but may be available via the Official URL, or by requesting a copy from the corresponding author.
Official URL: http://prola.aps.org/abstract/PRB/v69/i16/e165419
Abstract
X-ray photoemission spectroscopy and optical absorption studies have been carried out on Cu2O nanoparticles prepared using the activated reactive evaporation technique. A strong shift of the valence band edge (from 0.7 to 1.8 eV) has been observed on reduction of the nanoparticle size from 20 nm to 4 nm. The size-dependent modifications in the energy level diagram and metal-Cu2O nanoparticle Schottky junction characteristics confirm the observation of the inversion of conductivity type from p-type bulk conductivity to n-type conductivity in Cu2O nanoparticles at lower dimensions. This study can initiate a further methodology for tailoring the semiconductor properties of a material by controlling the nanoparticle size.
| Item Type: | Article |
|---|---|
| Subjects: | Physical Science > Nanophysics Physical Science > Nano objects Material Science > Nanochemistry Material Science > Nanostructured materials |
| Divisions: | Faculty of Engineering, Science and Mathematics > School of Physics Faculty of Engineering, Science and Mathematics > School of Chemistry |
| ID Code: | 5073 |
| Deposited By: | JNCASR |
| Deposited On: | 27 May 2009 10:15 |
| Last Modified: | 27 May 2009 10:15 |
Repository Staff Only: item control page
