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Charge. transport, conductivity and Seebeck coefficient in pristine and TCNQ loaded preferentially grown metal-organic framework films

Chen, Xin; Zhang, Kai; Hassan, Zeinab Mohamed 1; Redel, Engelbert 1; Baumgart, Helmut
1 Institut für Funktionelle Grenzflächen (IFG), Karlsruher Institut für Technologie (KIT)

Abstract:

This investigation on metal-organic framework (MOF) HUKUST-1 films focuses on comparing the undoped pristine state and with the case of doping by TCNQ infiltration of the MOF pore structure. We have determined the temperature dependent charge transport and p-type conductivity for HKUST-1 films. Furthermore, the electrical conductivity and the current–voltage characteristics have been characterized in detail. Because the most common forms of MOFs, bulk MOF powders, do not lend themselves easily to electrical characterization investigations, here in this study the electrical measurements were performed on dense, compact surface-anchored metal-organic framework (SURMOF) films. These monolithic, well-defined, and (001) preferentially oriented MOF thin films are grown using quasi-liquid phase epitaxy (LPE) on specially functionalized silicon or borosilicate glass substrates. In addition to the pristine SURMOF films also the effect of loading these porous thin films with TCNQ has been investigated. Positive charge carrier conduction and a strong anisotropy in electrical conduction was observed for highly oriented SURMOF films and corroborated with Seebeck coefficient measurements. ... mehr


Verlagsausgabe §
DOI: 10.5445/IR/1000150641
Veröffentlicht am 04.10.2022
Originalveröffentlichung
DOI: 10.1088/1361-648X/abe72f
Scopus
Zitationen: 3
Web of Science
Zitationen: 4
Dimensions
Zitationen: 4
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Funktionelle Grenzflächen (IFG)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 05.10.2022
Sprache Englisch
Identifikator ISSN: 0953-8984, 1361-648X
KITopen-ID: 1000150641
HGF-Programm 43.33.11 (POF IV, LK 01) Adaptive and Bioinstructive Materials Systems
Erschienen in Journal of Physics: Condensed Matter
Verlag Institute of Physics Publishing Ltd (IOP Publishing Ltd)
Band 34
Heft 40
Seiten Art.-Nr.: 404001
Vorab online veröffentlicht am 09.08.2022
Nachgewiesen in Dimensions
Web of Science
Scopus
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