Investigation of External Charges Effects on Piezoelectric ZnO Nanogenerator
Piezopotential generation in semiconductive ZnO nanowire (NW), oriented along the c-axis [0001], is significantly affected by free charge carriers within the ZnO NW. In this paper, the effect of free carriers’ distribution in semiconductive ZnO nanowire is investigated, using a Finite Element Method...
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| Language: | English |
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Sumy State University
2016-06-01
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| Series: | Журнал нано- та електронної фізики |
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| Online Access: | http://jnep.sumdu.edu.ua/download/numbers/2016/2/articles/jnep_2016_V8_02047.pdf |
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| author | Samira Fathi Tahereh Fanaei Sheikholeslami |
| author_facet | Samira Fathi Tahereh Fanaei Sheikholeslami |
| author_sort | Samira Fathi |
| collection | DOAJ |
| description | Piezopotential generation in semiconductive ZnO nanowire (NW), oriented along the c-axis [0001], is significantly affected by free charge carriers within the ZnO NW. In this paper, the effect of free carriers’ distribution in semiconductive ZnO nanowire is investigated, using a Finite Element Method (FEM). The mentioned effect leads to modification of the conduction band variation, carrier concentration profiles, and eventually, the magnitude and distribution of the piezoelectric potential. The impact of free charge carriers shows that the negative potential distributed at the tip of ZnO NW is decreased from V = – 270 mv for the donor concentration ND = 1 × 1015 C/m3 to the V = – 25 mV, in presence of the donor concentration of ND = 1 × 1018 C/m3. With selecting the appropriate electrical boundary conditions and applying the surface charges density at the top of the nanowire, the potential reduction is compensated. The electrostatic effect leads to a significant enhancement of the piezoelectric potential. The results are well shown the interplay of volume and surface charges and their influence on performance of nanogenerator, and so are crucial for designing of nanogenerators with high piezoelectric potential and good efficiency. |
| format | Article |
| id | doaj-art-2761604bb82a43c780be55ddbf3a0e7d |
| institution | OA Journals |
| issn | 2077-6772 |
| language | English |
| publishDate | 2016-06-01 |
| publisher | Sumy State University |
| record_format | Article |
| series | Журнал нано- та електронної фізики |
| spelling | doaj-art-2761604bb82a43c780be55ddbf3a0e7d2025-08-20T02:01:50ZengSumy State UniversityЖурнал нано- та електронної фізики2077-67722016-06-018202047-102047-610.21272/jnep.8(2).02047Investigation of External Charges Effects on Piezoelectric ZnO NanogeneratorSamira Fathi0Tahereh Fanaei Sheikholeslami1Electronic Department, Faculty of Electrical and Computer Engineering, University of Sistan and Baluchestan, Zahedan, IranElectronic Department, Faculty of Electrical and Computer Engineering, University of Sistan and Baluchestan, Zahedan, IranPiezopotential generation in semiconductive ZnO nanowire (NW), oriented along the c-axis [0001], is significantly affected by free charge carriers within the ZnO NW. In this paper, the effect of free carriers’ distribution in semiconductive ZnO nanowire is investigated, using a Finite Element Method (FEM). The mentioned effect leads to modification of the conduction band variation, carrier concentration profiles, and eventually, the magnitude and distribution of the piezoelectric potential. The impact of free charge carriers shows that the negative potential distributed at the tip of ZnO NW is decreased from V = – 270 mv for the donor concentration ND = 1 × 1015 C/m3 to the V = – 25 mV, in presence of the donor concentration of ND = 1 × 1018 C/m3. With selecting the appropriate electrical boundary conditions and applying the surface charges density at the top of the nanowire, the potential reduction is compensated. The electrostatic effect leads to a significant enhancement of the piezoelectric potential. The results are well shown the interplay of volume and surface charges and their influence on performance of nanogenerator, and so are crucial for designing of nanogenerators with high piezoelectric potential and good efficiency.http://jnep.sumdu.edu.ua/download/numbers/2016/2/articles/jnep_2016_V8_02047.pdfFree charge carrierMechanical energy harvestingPiezoelectric nanogeneratorPiezoelectric potentialSurface charge densityZnO nanowir |
| spellingShingle | Samira Fathi Tahereh Fanaei Sheikholeslami Investigation of External Charges Effects on Piezoelectric ZnO Nanogenerator Журнал нано- та електронної фізики Free charge carrier Mechanical energy harvesting Piezoelectric nanogenerator Piezoelectric potential Surface charge density ZnO nanowir |
| title | Investigation of External Charges Effects on Piezoelectric ZnO Nanogenerator |
| title_full | Investigation of External Charges Effects on Piezoelectric ZnO Nanogenerator |
| title_fullStr | Investigation of External Charges Effects on Piezoelectric ZnO Nanogenerator |
| title_full_unstemmed | Investigation of External Charges Effects on Piezoelectric ZnO Nanogenerator |
| title_short | Investigation of External Charges Effects on Piezoelectric ZnO Nanogenerator |
| title_sort | investigation of external charges effects on piezoelectric zno nanogenerator |
| topic | Free charge carrier Mechanical energy harvesting Piezoelectric nanogenerator Piezoelectric potential Surface charge density ZnO nanowir |
| url | http://jnep.sumdu.edu.ua/download/numbers/2016/2/articles/jnep_2016_V8_02047.pdf |
| work_keys_str_mv | AT samirafathi investigationofexternalchargeseffectsonpiezoelectricznonanogenerator AT taherehfanaeisheikholeslami investigationofexternalchargeseffectsonpiezoelectricznonanogenerator |