期刊
NANO LETTERS
卷 15, 期 6, 页码 3763-3769出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.5b00300
关键词
Sodium ion; intercalation; printed RGO network; transparent conductor; two-dimensional Materials
类别
资金
- University of Maryland, College Park
- Maryland Nano center and its Fablab, Nisplab and surface analysis center
In this work, we report for the first time that Na-ion intercalation of reduced graphene oxide (RGO) can significantly improve its printed network's performance as a transparent conductor. Unlike pristine graphene that inhibits Na-ion intercalation, the larger layer-layer distance of RGO allows Na-ion intercalation, leading to simultaneously much higher DC conductivity and higher optical transmittance. The typical increase of transmittance from 36% to 79% and decrease of sheet resistance from 83k to 311 Ohms/sq in the printed network was observed after Na-ion intercalation. Compared with Li-intercalated graphene, Na-ion intercalated RGO shows much better environmental stability, which is likely due to the self-terminating oxidation of Na ions on the RGO edges. This study demonstrated the great potential of metal-ion intercalation to improve the performance of printed RGO network for transparent conductor applications.
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