Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 이휘건 | - |
dc.date.accessioned | 2020-08-27T07:04:59Z | - |
dc.date.available | 2020-08-27T07:04:59Z | - |
dc.date.issued | 2019-11 | - |
dc.identifier.citation | JOURNAL OF ALLOYS AND COMPOUNDS, v. 809, article no. UNSP 151832 | en_US |
dc.identifier.issn | 0925-8388 | - |
dc.identifier.issn | 1873-4669 | - |
dc.identifier.uri | https://www.sciencedirect.com/science/article/pii/S0925838819330658?via%3Dihub | - |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/152670 | - |
dc.description.abstract | Herein, a simple and effective PbS colloidal quantum dot (CQD) decoration method for single-walled carbon nanotube (SWNT) is demonstrated. By dipping the SWNT film into a CQD dispersion followed by a solid-state ligand exchange, CQDs were successfully decorated onto the wall of SWNT without compromising a narrow size distribution. Spectroscopic studies suggested that (1) the CQD decoration and subsequent ligand exchange process did not alter the chemical nature of the SWNT framework and (2) there was a charge (electron) transfer process from the PbS CQD to the SWNT. Field emission (FE) characteristics of the CQD-decorated SWNT films revealed that FE enhancement was indeed established from SWNTs with a moderate degree of CQD decoration, while those with excessive decoration (coating) exhibited notable FE suppression. Horizontal current-voltage measurements with perpendicular-directional external electric field modulation suggested that electron supplement of SWNT from PbS CQD was pronounced as the amount of decorated CQDs increased. Based on the experimental results, we proposed a new mechanism demonstrating FE enhancement of a CQD/SWNT heterostructure. (C) 2019 Elsevier B.V. All rights reserved. | en_US |
dc.description.sponsorship | This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (NRF2019R1F1A1045506). | en_US |
dc.language.iso | en | en_US |
dc.publisher | ELSEVIER SCIENCE SA | en_US |
dc.subject | Single-walled carbon nanotubes | en_US |
dc.subject | Quantum dots | en_US |
dc.subject | Ligand-exchange | en_US |
dc.subject | Field emission | en_US |
dc.subject | Charge transfer | en_US |
dc.title | Field emission enhancement of PbS colloidal quantum dot-decorated single-walled carbon nanotubes | en_US |
dc.type | Article | en_US |
dc.relation.volume | 809 | - |
dc.identifier.doi | 10.1016/j.jallcom.2019.151832 | - |
dc.relation.page | 151832-151840 | - |
dc.relation.journal | JOURNAL OF ALLOYS AND COMPOUNDS | - |
dc.contributor.googleauthor | Yang, Jonghee | - |
dc.contributor.googleauthor | Lee, Junyoung | - |
dc.contributor.googleauthor | Yi, Whikun | - |
dc.relation.code | 2019001568 | - |
dc.sector.campus | S | - |
dc.sector.daehak | COLLEGE OF NATURAL SCIENCES[S] | - |
dc.sector.department | DEPARTMENT OF CHEMISTRY | - |
dc.identifier.pid | wkyi | - |
dc.identifier.orcid | https://orcid.org/0000-0001-8402-9289 | - |
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