Large work function difference driven electron transfer from electrides to single-walled carbon nanotubes

Handle URI:
http://hdl.handle.net/10754/594068
Title:
Large work function difference driven electron transfer from electrides to single-walled carbon nanotubes
Authors:
Menamparambath, Mini Mol; Park, Jong Ho; Yoo, Ho Sung; Patole, Shashikant P.; Yoo, Ji Beom; Kim, Sung Wng; Baik, Seunghyun
Abstract:
A difference in work function plays a key role in charge transfer between two materials. Inorganic electrides provide a unique opportunity for electron transfer since interstitial anionic electrons result in a very low work function of 2.4-2.6 eV. Here we investigated charge transfer between two different types of electrides, [Ca2N]+·e- and [Ca 24Al28O64]4+·4e-, and single-walled carbon nanotubes (SWNTs) with a work function of 4.73-5.05 eV. [Ca2N]+·e- with open 2-dimensional electron layers was more effective in donating electrons to SWNTs than closed cage structured [Ca24Al28O64] 4+·4e- due to the higher electron concentration (1.3 × 1022 cm-3) and mobility (∼200 cm 2 V-1 s-1 at RT). A non-covalent conjugation enhanced near-infrared fluorescence of SWNTs as high as 52%. The field emission current density of electride-SWNT-silver paste dramatically increased by a factor of 46000 (14.8 mA cm-2) at 2 V μm-1 (3.5 wt% [Ca2N]+·e-) with a turn-on voltage of 0.85 V μm-1. This journal is © the Partner Organisations 2014.
KAUST Department:
Materials Science and Engineering Program
Citation:
Menamparambath MM, Park J-H, Yoo H-S, Patole SP, Yoo J-B, et al. (2014) Large work function difference driven electron transfer from electrides to single-walled carbon nanotubes. Nanoscale 6: 8844. Available: http://dx.doi.org/10.1039/c4nr01629g.
Publisher:
Royal Society of Chemistry (RSC)
Journal:
Nanoscale
Issue Date:
23-Jun-2014
DOI:
10.1039/c4nr01629g
PubMed ID:
24956225
Type:
Article
ISSN:
2040-3364; 2040-3372
Appears in Collections:
Articles; Materials Science and Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorMenamparambath, Mini Molen
dc.contributor.authorPark, Jong Hoen
dc.contributor.authorYoo, Ho Sungen
dc.contributor.authorPatole, Shashikant P.en
dc.contributor.authorYoo, Ji Beomen
dc.contributor.authorKim, Sung Wngen
dc.contributor.authorBaik, Seunghyunen
dc.date.accessioned2016-01-19T13:20:47Zen
dc.date.available2016-01-19T13:20:47Zen
dc.date.issued2014-06-23en
dc.identifier.citationMenamparambath MM, Park J-H, Yoo H-S, Patole SP, Yoo J-B, et al. (2014) Large work function difference driven electron transfer from electrides to single-walled carbon nanotubes. Nanoscale 6: 8844. Available: http://dx.doi.org/10.1039/c4nr01629g.en
dc.identifier.issn2040-3364en
dc.identifier.issn2040-3372en
dc.identifier.pmid24956225en
dc.identifier.doi10.1039/c4nr01629gen
dc.identifier.urihttp://hdl.handle.net/10754/594068en
dc.description.abstractA difference in work function plays a key role in charge transfer between two materials. Inorganic electrides provide a unique opportunity for electron transfer since interstitial anionic electrons result in a very low work function of 2.4-2.6 eV. Here we investigated charge transfer between two different types of electrides, [Ca2N]+·e- and [Ca 24Al28O64]4+·4e-, and single-walled carbon nanotubes (SWNTs) with a work function of 4.73-5.05 eV. [Ca2N]+·e- with open 2-dimensional electron layers was more effective in donating electrons to SWNTs than closed cage structured [Ca24Al28O64] 4+·4e- due to the higher electron concentration (1.3 × 1022 cm-3) and mobility (∼200 cm 2 V-1 s-1 at RT). A non-covalent conjugation enhanced near-infrared fluorescence of SWNTs as high as 52%. The field emission current density of electride-SWNT-silver paste dramatically increased by a factor of 46000 (14.8 mA cm-2) at 2 V μm-1 (3.5 wt% [Ca2N]+·e-) with a turn-on voltage of 0.85 V μm-1. This journal is © the Partner Organisations 2014.en
dc.publisherRoyal Society of Chemistry (RSC)en
dc.titleLarge work function difference driven electron transfer from electrides to single-walled carbon nanotubesen
dc.typeArticleen
dc.contributor.departmentMaterials Science and Engineering Programen
dc.identifier.journalNanoscaleen
dc.contributor.institutionCenter for Integrated Nanostructure Physics, Institute for Basic Science (IBS), Suwon 440-746, South Koreaen
dc.contributor.institutionSchool of Mechanical Engineering, Sungkyunkwan University, Suwon 440-746, South Koreaen
dc.contributor.institutionDepartment of Energy Science, Sungkyunkwan University, Suwon 440-746, South Koreaen
dc.contributor.institutionSKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon 440-746, South Koreaen
dc.contributor.institutionSchool of Advanced Materials Science and Engineering (BK21), Sungkyunkwan University, Suwon 440-746, South Koreaen
kaust.authorYoo, Ji Beomen

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