Polarity and piezoelectric response of solution grown zinc oxide nanocrystals on silver
| Autor: | David Scrymgeour, Thomas L. Sounart, Julia W. P. Hsu, Neil C. Simmons |
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| Rok vydání: | 2007 |
| Předmět: | |
| Zdroj: | Journal of Applied Physics. 101:014316 |
| ISSN: | 1089-7550 0021-8979 |
| DOI: | 10.1063/1.2405014 |
| Popis: | The crystal orientation and piezoelectric properties of solution grown ZnO nanorods on Ag films were measured by quantitative piezoelectric force microscopy (PFM). The polarity of the rods, important for many device applications, was determined to be oriented [0001] from the substrates. This indicates that the prevalence of the [0001] oriented crystals is dominated by the fastest growing direction in solution. The average value of the d33 piezoelectric coefficient was measured to be 4.41pm∕V, with a standard deviation of 1.73pm∕V among the 198 individual rods. For calibration and comparison, PFM measurements were also performed on single crystals of x-cut quartz, z-cut periodically poled and single domain LiNbO3, and z-cut ZnO. Repeated measurements on individual rods establish that the run-to-run variation of a single rod is similar to that of single crystal measurements on quartz and LiNbO3. Hence, the observed rod-to-rod variation is not due to measurement uncertainty. Potential origins of this rod-to-... |
| Databáze: | OpenAIRE |
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