Structural and impedance spectroscopy study of Al-doped ZnO nanorods grown by sol-gel method
Link to publisher's homepage at http://www.emeraldinsight.com/
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
Emerald Group Publishing Limited
2013
|
| Subjects: | |
| Online Access: | http://dspace.unimap.edu.my/xmlui/handle/123456789/22921 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Institution: | Universiti Malaysia Perlis |
| Language: | English |
| id |
my.unimap-22921 |
|---|---|
| record_format |
dspace |
| spelling |
my.unimap-229212013-01-10T10:17:21Z Structural and impedance spectroscopy study of Al-doped ZnO nanorods grown by sol-gel method Muhammad, Kashif Uda, Hashim, Prof. Dr. Md. Eaqub, Ali Ala'eddin Ahmad Jaber, Saif, Dr. Syed Muhammad Usman, Ali Willander, Magnus, Prof kashif_bme@yahoo.com uda@unimap.edu.my eaqubali@gmail.com alaeddin@unimap.edu.my syeal@itn.liu.se magwi@itn.liu.se Microelectronics Electrical impedance Temperature Sol-gel Nanorods Impedance ZnO Link to publisher's homepage at http://www.emeraldinsight.com/ Purpose – The purpose of this paper is to investigate the electrical transport mechanism of the Al-doped ZnO nanorods at different temperatures by employing impedance spectroscopy. Design/methodology/approach – Al-doped ZnO nanorods were grown on silicon substrate using step sol-gel method. For the seed solution preparation Zinc acetate dihydrate, 2-methoxyethanol, monoethanolamine and aluminum nitrite nano-hydrate were used as a solute, solvent, stabilizer and dopant, respectively. Prior to the deposition, P-type Si (100) wafer was cut into pieces of 1 cm £ 2 cm. The samples were then cleaned in an ultrasonic bath with acetone, ethanol, and de-ionized (DI) water for 5 min. The prepared seed solution was coated on silicon substrate using spin coater at spinning speed of 3000 rpm for 30 s and then dried at 2508C for 10 min followed by annealing at 5508C for 1 h. The hydrothermal growth was carried out in a solution of zinc nitrate hexahydrate (0.025M), Hexamethyltetramine (0.025M) in DI water. Findings – Al-doped ZnO nanorods were characterized using scanning electron microscope (SEM), X-ray diffraction (XRD) and impedance spectroscopy. The impedance measurements were carried out at various temperatures (1008C-3258C). The impedance results showed that temperature has great influence on the impedance; the impedance value decreased as the temperature increased. This decrement is attributed to the increase of the mobility of the defects, especially the oxygen vacancies. The surface morphology of the samples was measured by SEM and X-ray diffraction. The SEM images show that the high density of Al-doped ZnO nanorods covers the silicon substrate, whereas the XRD pattern shows the (002) crystal orientation. Originality/value – This paper demonstrates the electron transport mechanism of Al-doped ZnO nanorods, at different temperatures, to understand the charge transport model. 2013-01-10T08:16:02Z 2013-01-10T08:16:02Z 2012 Article Microelectronics International, vol.29 (3), 2012, pages 131–135 1356-5362 http://www.emeraldinsight.com/journals.htm?articleid=17045599&show=abstract http://hdl.handle.net/123456789/22921 en Emerald Group Publishing Limited |
| institution |
Universiti Malaysia Perlis |
| building |
UniMAP Library |
| collection |
Institutional Repository |
| continent |
Asia |
| country |
Malaysia |
| content_provider |
Universiti Malaysia Perlis |
| content_source |
UniMAP Library Digital Repository |
| url_provider |
http://dspace.unimap.edu.my/ |
| language |
English |
| topic |
Microelectronics Electrical impedance Temperature Sol-gel Nanorods Impedance ZnO |
| spellingShingle |
Microelectronics Electrical impedance Temperature Sol-gel Nanorods Impedance ZnO Muhammad, Kashif Uda, Hashim, Prof. Dr. Md. Eaqub, Ali Ala'eddin Ahmad Jaber, Saif, Dr. Syed Muhammad Usman, Ali Willander, Magnus, Prof Structural and impedance spectroscopy study of Al-doped ZnO nanorods grown by sol-gel method |
| description |
Link to publisher's homepage at http://www.emeraldinsight.com/ |
| author2 |
kashif_bme@yahoo.com |
| author_facet |
kashif_bme@yahoo.com Muhammad, Kashif Uda, Hashim, Prof. Dr. Md. Eaqub, Ali Ala'eddin Ahmad Jaber, Saif, Dr. Syed Muhammad Usman, Ali Willander, Magnus, Prof |
| format |
Article |
| author |
Muhammad, Kashif Uda, Hashim, Prof. Dr. Md. Eaqub, Ali Ala'eddin Ahmad Jaber, Saif, Dr. Syed Muhammad Usman, Ali Willander, Magnus, Prof |
| author_sort |
Muhammad, Kashif |
| title |
Structural and impedance spectroscopy study of Al-doped ZnO nanorods grown by sol-gel method |
| title_short |
Structural and impedance spectroscopy study of Al-doped ZnO nanorods grown by sol-gel method |
| title_full |
Structural and impedance spectroscopy study of Al-doped ZnO nanorods grown by sol-gel method |
| title_fullStr |
Structural and impedance spectroscopy study of Al-doped ZnO nanorods grown by sol-gel method |
| title_full_unstemmed |
Structural and impedance spectroscopy study of Al-doped ZnO nanorods grown by sol-gel method |
| title_sort |
structural and impedance spectroscopy study of al-doped zno nanorods grown by sol-gel method |
| publisher |
Emerald Group Publishing Limited |
| publishDate |
2013 |
| url |
http://dspace.unimap.edu.my/xmlui/handle/123456789/22921 |
| _version_ |
1643793841820532736 |