{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Ko TS"],"funding":["National Science and Technology Council of Taiwan"],"pagination":["3054"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC10143599"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["16(8)"],"pubmed_abstract":["In the application of WS<sub>2</sub> as a surface-enhanced Raman scattering (SERS) substrate, enhancing the charge transfer (CT) opportunity between WS<sub>2</sub> and analyte is an important issue for SERS efficiency. In this study, we deposited few-layer WS<sub>2</sub> (2-3 layers) on GaN and sapphire substrates with different bandgap characteristics to form heterojunctions using a chemical vapor deposition. Compared with sapphire, we found that using GaN as a substrate for WS<sub>2</sub> can effectively enhance the SERS signal, with an enhancement factor of 6.45 × 10<sup>4</sup> and a limit of detection of 5 × 10<sup>-6</sup> M for probe molecule Rhodamine 6G according to SERS measurement. Analysis of Raman, Raman mapping, atomic force microscopy, and SERS mechanism revealed that The SE"],"journal":["Materials (Basel, Switzerland)"],"pubmed_title":["The Role of GaN in the Heterostructure WS<sub>2</sub>/GaN for SERS Applications."],"pmcid":["PMC10143599"],"funding_grant_id":["111-2221-E-018-016"],"pubmed_authors":["Lin ET","Ko TS","Deng CA","Ho YT"],"additional_accession":[]},"is_claimable":false,"name":"The Role of GaN in the Heterostructure WS<sub>2</sub>/GaN for SERS Applications.","description":"In the application of WS<sub>2</sub> as a surface-enhanced Raman scattering (SERS) substrate, enhancing the charge transfer (CT) opportunity between WS<sub>2</sub> and analyte is an important issue for SERS efficiency. In this study, we deposited few-layer WS<sub>2</sub> (2-3 layers) on GaN and sapphire substrates with different bandgap characteristics to form heterojunctions using a chemical vapor deposition. Compared with sapphire, we found that using GaN as a substrate for WS<sub>2</sub> can effectively enhance the SERS signal, with an enhancement factor of 6.45 × 10<sup>4</sup> and a limit of detection of 5 × 10<sup>-6</sup> M for probe molecule Rhodamine 6G according to SERS measurement. Analysis of Raman, Raman mapping, atomic force microscopy, and SERS mechanism revealed that The SE","dates":{"release":"2023-01-01T00:00:00Z","publication":"2023 Apr","modification":"2025-04-21T17:25:06.115Z","creation":"2025-04-05T16:40:48.812Z"},"accession":"S-EPMC10143599","cross_references":{"pubmed":["37109889"],"doi":["10.3390/ma16083054"]}}