| Full text | |
| Author(s): |
Barbosa, Martin S.
[1, 2, 3]
;
da Silva, Ranilson A.
[2]
;
Santato, Clara
[3]
;
Orlandi, Marcelo O.
[2]
Total Authors: 4
|
| Affiliation: | [1] Univ Fed Goias, Inst Quim, Av Esperanca, S-N Chacaras Recreio Samambaia, BR-74690900 Goiania, Go - Brazil
[2] Sao Paulo State Univ, Dept Fis Engn & Matemat, Rua Prof Degni 55, BR-14800060 Araraquara, SP - Brazil
[3] Polytech Montreal, Dept Genie Phys, CP 6079, Montreal, PQ H3C 3A7 - Canada
Total Affiliations: 3
|
| Document type: | Journal article |
| Source: | JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A; v. 40, n. 1 JAN 2022. |
| Web of Science Citations: | 0 |
| Abstract | |
Molecular hydrogen (H-2) shows promise as a future renewable energy carrier. However, due to safety concerns, its reliable detection in different atmospheres is an important issue. Here, we propose a hydrogen sensor based on ion-gated transistors exploiting the interface between tungsten oxide and ionic liquids. Two different approaches to gas sensors (metal oxide gas sensor and ionic liquid-based electrochemical sensor) are integrated in a single device. We demonstrate that ionic liquid gating enhances the effect of H-2 on the tungsten oxide transistor channel. The transistor current response permits the detection of H-2 in an O-2-free environment with the device operating in room temperature. After H-2 sensing, the initial properties of the tungsten oxide channel can be recovered by exposure to O-2. (AU) | |
| FAPESP's process: | 14/27079-9 - Electrolyte-Gated transistors based on WO3 thin films: influence of the morphology and structure of the films on the device performance |
| Grantee: | Martin Schwellberger Barbosa |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| FAPESP's process: | 15/50526-4 - Electrolyte gating of metal oxide films:towards low power and printable electronics |
| Grantee: | Marcelo Ornaghi Orlandi |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 16/09033-7 - Electrolyte-gated transistors based on WO3 films |
| Grantee: | Martin Schwellberger Barbosa |
| Support Opportunities: | Scholarships abroad - Research Internship - Doctorate |