ZnO decorated luminescent graphene as a potential gas sensor at room temperature
| dc.contributor.author | Choudhary, Anshul | |
| dc.date.accessioned | 2021-01-04T05:16:52Z | |
| dc.date.available | 2021-01-04T05:16:52Z | |
| dc.date.issued | 2012 | |
| dc.description | Only IISERM authors are available in the record. | |
| dc.description.abstract | We present a simplistic single step synthesis and a detailed study of the remarkable room temperature gas sensing and photoluminescence (PL) properties of zinc oxide (ZnO) decorated graphene oxide sheets (GrO). Investigation of opto-electronic properties reveal near UV to blue PL and semiconducting behavior of ZnO–GrO sheets. ZnO nano-crystallites serve the dual purpose of acting as a nano-spacer between dried graphene sheets as well as a primary sensing transducer for the gas sensing applications. PL has been used as a tool to study the defects associated with the surface of the nanocrystallite’s trap levels and/or acceptor–donor recombinations. Time-resolved PL was used to determine free carrier or exciton lifetimes, a vital parameter related to quality of composite and device performance. Results are presented for the detection of common industrial toxins like CO, NH3 and NO for concentrations as low as 1 ppm at room temperature. A large sensor response and quick recovery time was observed at room temperature with preferred selectivity towards electron donor gases like CO and NH3. | en_US |
| dc.identifier.citation | Carbon 50(2), pp. 385-394 | en_US |
| dc.identifier.other | https://doi.org/10.1016/j.carbon.2011.08.050 | |
| dc.identifier.uri | https://www.sciencedirect.com/science/article/abs/pii/S000862231100697X?via%3Dihub | |
| dc.identifier.uri | http://hdl.handle.net/123456789/3506 | |
| dc.language.iso | en | en_US |
| dc.publisher | Elsevier | en_US |
| dc.subject | Synthesis | en_US |
| dc.subject | Room temperature | en_US |
| dc.subject | Nano-spacer | en_US |
| dc.title | ZnO decorated luminescent graphene as a potential gas sensor at room temperature | en_US |
| dc.type | Article | en_US |