Earth abundant iron-rich N-doped graphene based spacer and cavity materials for surface plasmon-coupled emission enhancements
| Title | Earth abundant iron-rich N-doped graphene based spacer and cavity materials for surface plasmon-coupled emission enhancements |
| Publication Type | Journal Article |
| Year of Publication | 2016 |
| Authors | Srinivasan, V, Vernekar, D, Jaiswal, G, Jagadeesan, D, Ramamurthy, SSathish |
| Journal | ACS Applied Materials & Interfaces |
| Volume | 8 |
| Issue | 19 |
| Pagination | 12324-12329 |
| Date Published | MAY |
| ISSN | 1944-8244 |
| Keywords | Casimir effect, fluorescence enhancements, iron carbides, N-doped graphene, Purcell factor, surface plasmon-coupled emission |
| Abstract | We demonstrate for the first time the use of Fe based nanoparticles on N-doped graphene as spacer and cavity materials and study their plasmonic effect on the spontaneous emission of a radiating dipole. Fe-C-MF was produced by pyrolizing FeOOH and melamine formaldehyde precursor on graphene, while Fe-C-PH was produced by pyrolizing the Fe-phenanthroline complex on graphene. The use of the Fe-C-MF composite consisting of Fe-rich crystalline phases supported on N-doped graphene presented a spacer material with 116-fold fluorescence enhancements. On the other hand, the Fe-C-PH/Ag based cavity resulted in an 82-fold enhancement in Surface Plasmon-Coupled Emission (SPCE), with high directionality and polarization of Rhodamine 6G (Rh6G) emission owing to Casimir and Purcell effects. The use of a mobile phone as a cost-effective fluorescence detection device in the present work opens up a flexible perspective for the study of different nanomaterials as tunable substrates in cavity mode and spacer applications. |
| DOI | 10.1021/acsami.5b12038 |
| Type of Journal (Indian or Foreign) | Foreign |
| Impact Factor (IF) | 7.145 |