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- Publisher Website: 10.1016/j.nanoen.2014.12.040
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Article: Freestanding ZnO nanorod/graphene/ZnO nanorod epitaxial double heterostructure for improved piezoelectric nanogenerators
Title | Freestanding ZnO nanorod/graphene/ZnO nanorod epitaxial double heterostructure for improved piezoelectric nanogenerators |
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Authors | |
Keywords | ZnO nanorods Preheating hydrothermal Nanogenerator Graphene Double-sided heterostructures |
Issue Date | 2015 |
Citation | Nano Energy, 2015, v. 12, p. 268-277 How to Cite? |
Abstract | © 2015 Elsevier Ltd. It has been intensively studied that vertically aligned ZnO nanorods over the last decade due to their remarkable piezoelectric properties and a potential for various applications. Here, we present a simple strategy for fabricating the freestanding ZnO nanorods/graphene/ZnO nanorods double sided heterostructures. The characterization of the double sided heterostructures by using SEM, and Raman scattering spectroscopy reveals the key process and working mechanism of a formation of the heterostructure. The mechanism is discussed in detail in term of the decomposed seed layer and the vacancy defect of graphene. The approach consists of a facile one-step fabrication process and could achieve ZnO coverage with a higher number density than that of the epitaxial single heterostructure. The resulting improvement in the number density of nanorods has a direct beneficial effect on the double side heterostructured nanogenerator performance. The total output voltage and current density are improved up to~2 times compared to those of a single heterostructure due to the coupling of the piezoelectric effects from both upward and downward grown nanorods. The facile one-step fabrication process suggests that double sided heterostructures would improve the performance of electrical and optoelectrical device, such as touch pad, pressure sensor, biosensor and dye-sensitized solar cells. |
Persistent Identifier | http://hdl.handle.net/10722/273709 |
ISSN | 2023 Impact Factor: 16.8 2023 SCImago Journal Rankings: 4.685 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Shin, Dong Myeong | - |
dc.contributor.author | Tsege, Ermias Libnedengel | - |
dc.contributor.author | Kang, Seok Hee | - |
dc.contributor.author | Seung, Wanchul | - |
dc.contributor.author | Kim, Sang Woo | - |
dc.contributor.author | Kim, Hyung Kook | - |
dc.contributor.author | Hong, Suck Won | - |
dc.contributor.author | Hwang, Yoon Hwae | - |
dc.date.accessioned | 2019-08-12T09:56:26Z | - |
dc.date.available | 2019-08-12T09:56:26Z | - |
dc.date.issued | 2015 | - |
dc.identifier.citation | Nano Energy, 2015, v. 12, p. 268-277 | - |
dc.identifier.issn | 2211-2855 | - |
dc.identifier.uri | http://hdl.handle.net/10722/273709 | - |
dc.description.abstract | © 2015 Elsevier Ltd. It has been intensively studied that vertically aligned ZnO nanorods over the last decade due to their remarkable piezoelectric properties and a potential for various applications. Here, we present a simple strategy for fabricating the freestanding ZnO nanorods/graphene/ZnO nanorods double sided heterostructures. The characterization of the double sided heterostructures by using SEM, and Raman scattering spectroscopy reveals the key process and working mechanism of a formation of the heterostructure. The mechanism is discussed in detail in term of the decomposed seed layer and the vacancy defect of graphene. The approach consists of a facile one-step fabrication process and could achieve ZnO coverage with a higher number density than that of the epitaxial single heterostructure. The resulting improvement in the number density of nanorods has a direct beneficial effect on the double side heterostructured nanogenerator performance. The total output voltage and current density are improved up to~2 times compared to those of a single heterostructure due to the coupling of the piezoelectric effects from both upward and downward grown nanorods. The facile one-step fabrication process suggests that double sided heterostructures would improve the performance of electrical and optoelectrical device, such as touch pad, pressure sensor, biosensor and dye-sensitized solar cells. | - |
dc.language | eng | - |
dc.relation.ispartof | Nano Energy | - |
dc.subject | ZnO nanorods | - |
dc.subject | Preheating hydrothermal | - |
dc.subject | Nanogenerator | - |
dc.subject | Graphene | - |
dc.subject | Double-sided heterostructures | - |
dc.title | Freestanding ZnO nanorod/graphene/ZnO nanorod epitaxial double heterostructure for improved piezoelectric nanogenerators | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1016/j.nanoen.2014.12.040 | - |
dc.identifier.scopus | eid_2-s2.0-84921421197 | - |
dc.identifier.volume | 12 | - |
dc.identifier.spage | 268 | - |
dc.identifier.epage | 277 | - |
dc.identifier.isi | WOS:000354767500031 | - |
dc.identifier.issnl | 2211-2855 | - |