Electrical Characterization of a Large‐Area Single‐Layer Cu<sub>3</sub>BHT 2D Conjugated Coordination Polymer
Abstract Understanding charge transport properties of large‐area single‐layer 2D materials is crucial for the future development of novel optoelectronic devices. In this work, the synthesis and electrical characterization of large‐area single‐layers of Cu 3 BHT 2D conjugated coordination polymers are reported. The Cu 3 BHT are synthesized on the water surface by the Langmuir‐Blodgett method and then transferred to SiO 2 /Si substrates with pre‐patterned electrical contacts. Electrical measurements revealed ohmic responses across areas up to ≈1 cm 2 , with a mean resistance of approximately 53 ± 3 kΩ at a probe separation of 50 µm. Cooling and heating cycles show hysteresis in the electrical response, suggesting different current pathways are formed as the samples underwent structural‐chemical changes during temperature sweeps. This hysteresis vanished after several cycles and the conductivity shows a stable exponential behavior as a function of temperature, suggesting that a temperature‐dependent tunneling process is governing the conduction mechanism in the analyzed polycrystalline single‐layer Cu 3 BHT samples. These results, together with density functional theory calculations and valence band X‐ray photoelectron spectroscopy data suggest that the single‐layer samples exhibit a semiconducting rather than a metallic behavior.
Authors
- Thomas Heine (ORCID: https://orcid.org/0000-0003-2379-6251)
- Mariela A. Menghini (ORCID: https://orcid.org/0000-0002-1744-798X)
- Daniel Granados (ORCID: https://orcid.org/0000-0001-7708-9080)
- Cristina Navío (ORCID: https://orcid.org/0000-0002-1443-6396)
- Julia García‐Pérez (ORCID: https://orcid.org/0000-0002-4527-6145)
- Renhao Dong⧫ (ORCID: https://orcid.org/0000-0002-4125-9284)
- Sandra M. Estévez (ORCID: https://orcid.org/0000-0001-5379-5722)
- Tsai‐Jung Liu (ORCID: https://orcid.org/0000-0002-6926-3592)
- Enrique Cánovas (ORCID: https://orcid.org/0000-0003-1021-4929)
- Fernando J. Urbanos (ORCID: https://orcid.org/0000-0002-2340-0221)
- Miroslav Položij (ORCID: https://orcid.org/0000-0002-3016-9523)
- Ignacio Figueruelo‐Campanero (ORCID: https://orcid.org/0000-0001-5144-9375)
- Jianjun Zhang (ORCID: https://orcid.org/0000-0001-7872-3477)
- Zhiyong Wang (ORCID: https://orcid.org/0000-0002-0909-9495)
- Xinliang Feng (ORCID: https://orcid.org/0000-0003-3885-2703)
- Gabriel Caballero
Institutions
- Madrid Institute for Advanced Studies (ES)
- Universidad Complutense de Madrid (ES)
- Shandong University (CN)
- Yonsei University (KR)
- Helmholtz-Zentrum Dresden-Rossendorf (DE)
- Max Planck Institute of Microstructure Physics (DE)
- Center for Advanced Systems Understanding (DE)
- Universidad Autónoma de Madrid (ES)
- Technische Universität Dresden (DE)
- University of Hong Kong (HK)
Publication Details
- Journal
- Advanced Functional Materials
- Published
- 2024-11-06
- DOI
- https://doi.org/10.1002/adfm.202416717
- Citations
- 5
- Primary Topic
- Metal-Organic Frameworks: Synthesis and Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.79
Funders
- Comunidad de Madrid
- Deutsche Forschungsgemeinschaft
- National Natural Science Foundation of China
- Natural Science Foundation of Shandong Province
- European Research Council
- Agencia Estatal de Investigación
- European Metrology Programme for Innovation and Research