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Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.49 [2011] >
IJPAP Vol.49(04) [April 2011] >
| Title: | Luminescence and electrical resistivity properties of cadmium oxide nanoparticles |
| Authors: | Lanje, Amrut S
Ningthoujam, Raghumani S
Sharma, Satish J
Pode, Ramchandra B |
| Keywords: | Cadmium oxide
Resistivity
Photoluminescence
Nanoparticles |
| Issue Date: | Apr-2011 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | Cadmium oxide (CdO) nanoparticles have been prepared by precipitation
method using cadmium acetate and ammonia solution. The electrical resistivity
(ρ) has been measured at low temperature using four-probe method which is found
to be 0.351 Ω-cm at 7 K and 0.264 Ω-cm at 300 K, respectively. The decrease of
resistivity with increasing temperature indicates the semiconducting behaviour.
The activation energy values are found to be 0.06 meV in temperature range 7-15
K and 0.6 meV in 39-152 K from temperature dependent resistivity.
Photoluminescence (PL) spectrum shows band edge emission at 395 nm and green
emission at 550 nm. Green emission arises from the oxygen vacancy of CdO
materials because of recombination of a photo generated hole in valence band
with an electron in conduction band. |
| Page(s): | 234-238 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-1041 (Online); 0019-5596 (Print) |
| Source: | IJPAP Vol.49(04) [April 2011]
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