Fully Solution‐Processed Conductive Films Based on Colloidal Copper Selenide Nanosheets for Flexible Electronics
| Autor: | Sergey Vikulov, Zhiya Dang, Roman Krahne, Liberato Manna, Alice Scarpellini, Pearl L. Saldanha, Vladimir Lesnyak, Francesco Di Stasio, Luca Ceseracciu |
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| Rok vydání: | 2016 |
| Předmět: |
Fabrication
Morphology (linguistics) Materials science Nanotechnology 02 engineering and technology Bending Conductivity 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Flexible electronics 0104 chemical sciences Electronic Optical and Magnetic Materials Biomaterials Colloid Nanocrystal Chemical engineering Electrochemistry 0210 nano-technology Electrical conductor |
| Zdroj: | Advanced Functional Materials. 26:3670-3677 |
| ISSN: | 1616-3028 1616-301X |
| DOI: | 10.1002/adfm.201600124 |
| Popis: | A novel colloidal synthesis of copper selenide nanosheets (NSs) with lateral dimensions of up to 3 μm is developed. This material is used for the fabrication of flexible conductive films prepared via simple drop-casting of the NS dispersions without any additional treatment. The electrical performance of these coatings is benchmarked against copper selenide spherical nanocrystals (SNCs) in order to demonstrate the advantage of 2D morphology of the NSs for flexible electronics. In this contest, Cu2−xSe SNC films exhibit higher conductivity but lower reproducibility due to the formation of cracks leading to discontinuous films. Furthermore, the electrical properties of the films deposited on different flexible substrates following their bending, stretching and folding are studied. A comparison of Cu2−xSe SNC and CuSe NS films reveals an increased stability of the CuSe NS films under mechanical stress applied to the samples and their improved long-term stability in air. |
| Databáze: | OpenAIRE |
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