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Thin and flexible transparent conductors with superior bendability having Al-doped ZnO layers with embedded Ag nanoparticles prepared by magnetron sputtering.
- Source :
-
Vacuum . Jul2020, Vol. 177, pN.PAG-N.PAG. 1p. - Publication Year :
- 2020
-
Abstract
- In this work, an attempt has been made to develop thin and flexible transparent conductors based on the interfaces of Ag nanoparticles (AgNP) and Al:ZnO (AZO) deposited by sequential magnetron sputtering. The entire deposition process is completed within 20–28 min without breaking vacuum thereby preventing post-deposition oxidation of Ag NPs. The co-existence of high transmittance and low sheet resistance along with stability under mechanical bending is a bit difficult to achieve in bare AZO thin film having thickness below 200 nm. The resistivity of the optimized AZO/AgNP/AZO composite structure is significantly low at 3.3 × 10−5 Ω cm, which is two orders lower than that of AZO thin film of similar thickness. The figure of merit of the optimized composite structure peaks at 39.0 mΩ−1 corresponding to Ag NPs growth period of 5 min. The novel fabrication of AZO/AgNP interface in a dry and vacuum environment facilitates superior bending stability required for a flexible transparent conductor. The findings suggest that a system of two thin layers of AZO with embedded Ag NPs can be a potential candidate as an indium free transparent conductor for the next generation optoelectronic device. • Al:ZnO (AZO) and Ag nanoparticles (AgNP) based composite transparent conductor. • Flexible and thin AZO/AgNP/AZO composite prepared by magnetron sputtering. • Low sheet resistance of 2.3 Ω/□ with optimal figure of merit of 39.0 mΩ−1. • Marked reduction of resistivity of AZO due to embedded Ag nanoparticles. • Bending stability due to effective AZO/AgNP interface prepared in vacuum environment. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 0042207X
- Volume :
- 177
- Database :
- Academic Search Index
- Journal :
- Vacuum
- Publication Type :
- Academic Journal
- Accession number :
- 143551508
- Full Text :
- https://doi.org/10.1016/j.vacuum.2020.109367