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Oriented Growth of In-Oxo Chain Based Metal-Porphyrin Framework Thin Film for High-Sensitive Photodetector

Tian, Yi-Bo; Vankova, Nina; Weidler, Peter 1; Kuc, Agnieszka; Heine, Thomas; Wöll, Christof 1; Gu, Zhi-Gang; Zhang, Jian
1 Institut für Funktionelle Grenzflächen (IFG), Karlsruher Institut für Technologie (KIT)

The potential of metal–organic frameworks (MOFs) for applications in optoelectronics results from a unique combination of interesting photophysical properties and straightforward tunability of organic and inorganic units. Here, it is demonstrated that using MOF approach chromophores can be assembled into well-ordered 1D arrays using metal-oxo strands as lead structure, and the resulting porphyrinic rows exhibit unique photophysical properties and allow the realization of highly sensitive photodetectors. A porphyrinic MOF thin film, In-TCPP surface-coordinated MOF thin films with [021] orientation is fabricated using a layer-by-layer method, from In(NO$_{3}$)$_{3}$ and TCPP (5,10,15,20-(4-carboxyphenyl)porphyrin). Detailed experimental and theoretical analysis reveals that the assembly yields a structure where In-oxo strands running parallel to the substrate fix the chromophoric linkers to yield 1D arrays of porphyrins. The frontier orbitals of this highly anisotropic arrangement are localized in these columnar arrangements of porphyrins and result in high photoactivity, which is exploited to fabricate a photodetector with record (as compared to other organic materials) responsivity in visible regime of 7.28 × 10$^{14}$ Jones and short rise/fall times (0.07/0.04 s). ... mehr

Verlagsausgabe §
DOI: 10.5445/IR/1000133595
Veröffentlicht am 03.06.2021
DOI: 10.1002/advs.202100548
Zitationen: 11
Web of Science
Zitationen: 12
Zitationen: 12
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Funktionelle Grenzflächen (IFG)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 07.2021
Sprache Englisch
Identifikator ISSN: 2198-3844
KITopen-ID: 1000133595
HGF-Programm 43.33.11 (POF IV, LK 01) Adaptive and Bioinstructive Materials Systems
Erschienen in Advanced Science
Verlag Wiley Open Access
Band 8
Heft 14
Seiten Art. Nr.: 2100548
Vorab online veröffentlicht am 17.05.2021
Nachgewiesen in Web of Science
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