Abstract
Cu3(HHTT)2 (HHTT: 2,3,7,8,12,13-hexahydroxytetraazanaphthotetraphene) is a novel 2D conjugated metal–organic framework (2D c-MOF) with efficient in-plane d–π conjugations and strong interlayer π–π interactions while the growth of Cu3(HHTT)2 thin films has never been reported until now. Here, the successful fabrication of highly oriented wafer-scale Cu3(HHTT)2 thin films with a layer-by-layer growth method on various substrates is presented. Its semiconducting behavior and carrier transport mechanisms are clarified through temperature and frequency-dependent conductivity measurements. Flexible photodetectors based on Cu3(HHTT)2 thin films exhibit reliable photoresponses at room temperature in a wavelength region from UV to mid-IR, which is much broader than those of solution-processed broadband photodetectors reported previously. Moreover, the photodetectors can show a typical synaptic behavior and excellent data recognition accuracy in artificial neural networks. This work opens a window for the exploration of high-performance and multifunctional optoelectronic devices based on 2D c-MOFs.
Original language | English |
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Article number | 2204140 |
Journal | Advanced Materials |
Volume | 34 |
Issue number | 32 |
DOIs | |
Publication status | Published - Jun 2022 |
Keywords
- 2D metal–organic framework
- broadband photodetectors
- conduction mechanism
- flexible electronics
- optical synapses
ASJC Scopus subject areas
- General Materials Science
- Mechanics of Materials
- Mechanical Engineering