Engineering of efficiency limiting free carriers and an interfacial energy barrier for an enhancing piezoelectric generation
The energy harvesting efficiency is of tremendous importance for the realization of a high output-power nanogenerator serving as the basis for self-powered electronics. Here we report that the device performance of a sound-driven piezoelectric energy nanogenerator (SPENG) is remarkably improved by c...
| Main Authors: | , , , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
2013
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| _version_ | 1797101019452145664 |
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| author | Sohn, J Cha, S Song, BG Lee, S Kim, S Ku, J Kim, H Park, Y Choi, B Wang, Z Kim, J Kim, K |
| author_facet | Sohn, J Cha, S Song, BG Lee, S Kim, S Ku, J Kim, H Park, Y Choi, B Wang, Z Kim, J Kim, K |
| author_sort | Sohn, J |
| collection | OXFORD |
| description | The energy harvesting efficiency is of tremendous importance for the realization of a high output-power nanogenerator serving as the basis for self-powered electronics. Here we report that the device performance of a sound-driven piezoelectric energy nanogenerator (SPENG) is remarkably improved by controlling both the carrier density and the interfacial energy in a semiconducting ZnO nanowire (NW), thereby achieving its intrinsic efficiency limits. A SPENG with carrier-controlled ZnO NWs exhibits excellent energy harvesting characteristics with an average power density of 0.9 mW cm -3, as well as a near 50 fold increase in both output voltage and current compared to those of a conventional ZnO NW. In addition, we demonstrate for the first time that an optimized SPENG is large enough and very suitable to drive electrophoretic ink displays based on voltage-drive systems. This fundamental progress makes it possible to fabricate high performance nanogenerators for viable industrial applications in portable/wearable personal electronics such as electronic papers and smart identity cards. © The Royal Society of Chemistry 2013. |
| first_indexed | 2024-03-07T05:45:57Z |
| format | Journal article |
| id | oxford-uuid:e737e0aa-e4fd-4d39-8a59-59cd73498e96 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T05:45:57Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | oxford-uuid:e737e0aa-e4fd-4d39-8a59-59cd73498e962022-03-27T10:36:58ZEngineering of efficiency limiting free carriers and an interfacial energy barrier for an enhancing piezoelectric generationJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:e737e0aa-e4fd-4d39-8a59-59cd73498e96EnglishSymplectic Elements at Oxford2013Sohn, JCha, SSong, BGLee, SKim, SKu, JKim, HPark, YChoi, BWang, ZKim, JKim, KThe energy harvesting efficiency is of tremendous importance for the realization of a high output-power nanogenerator serving as the basis for self-powered electronics. Here we report that the device performance of a sound-driven piezoelectric energy nanogenerator (SPENG) is remarkably improved by controlling both the carrier density and the interfacial energy in a semiconducting ZnO nanowire (NW), thereby achieving its intrinsic efficiency limits. A SPENG with carrier-controlled ZnO NWs exhibits excellent energy harvesting characteristics with an average power density of 0.9 mW cm -3, as well as a near 50 fold increase in both output voltage and current compared to those of a conventional ZnO NW. In addition, we demonstrate for the first time that an optimized SPENG is large enough and very suitable to drive electrophoretic ink displays based on voltage-drive systems. This fundamental progress makes it possible to fabricate high performance nanogenerators for viable industrial applications in portable/wearable personal electronics such as electronic papers and smart identity cards. © The Royal Society of Chemistry 2013. |
| spellingShingle | Sohn, J Cha, S Song, BG Lee, S Kim, S Ku, J Kim, H Park, Y Choi, B Wang, Z Kim, J Kim, K Engineering of efficiency limiting free carriers and an interfacial energy barrier for an enhancing piezoelectric generation |
| title | Engineering of efficiency limiting free carriers and an interfacial energy barrier for an enhancing piezoelectric generation |
| title_full | Engineering of efficiency limiting free carriers and an interfacial energy barrier for an enhancing piezoelectric generation |
| title_fullStr | Engineering of efficiency limiting free carriers and an interfacial energy barrier for an enhancing piezoelectric generation |
| title_full_unstemmed | Engineering of efficiency limiting free carriers and an interfacial energy barrier for an enhancing piezoelectric generation |
| title_short | Engineering of efficiency limiting free carriers and an interfacial energy barrier for an enhancing piezoelectric generation |
| title_sort | engineering of efficiency limiting free carriers and an interfacial energy barrier for an enhancing piezoelectric generation |
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