Bonding configuration and density of defects of SiOxHy thin films deposited by the electron cyclotron resonance plasma method
| dc.contributor.author | Martil De La Plaza, Ignacio | |
| dc.contributor.author | González Díaz, Germán | |
| dc.contributor.author | Prado Millán, Álvaro Del | |
| dc.contributor.author | San Andrés Serrano, Enrique | |
| dc.date.accessioned | 2023-06-20T10:44:39Z | |
| dc.date.available | 2023-06-20T10:44:39Z | |
| dc.date.issued | 2003-12-15 | |
| dc.description | © 2003 American Institute of Physics. The authors acknowledge C.A.I. de Implantación Iónica (U.C.M.) for technical support, and especially to Rosa Cimas Cuevas for aid in sample processing, and C.A.I. de Espectroscopia (U.C.M.) for providing access to the FTIR spectrometer. This work was partially supported by the Spanish CICYT, under Contract No. TIC 01-1253. | |
| dc.description.abstract | The composition, bonding configuration, hydrogen content, and paramagnetic defects of SiOxHy thin films were studied. Films were deposited by the electron cyclotron resonance plasma method at room temperature using SiH4 and O-2 as precursor gases. The film composition was measured by heavy ion elastic recoil detection analysis and energy dispersive x-ray spectroscopy. Suboxide films with compositions ranging from SiO2 to SiH0.38 were obtained. Infrared spectroscopy showed the presence of different Si-O and Si-H vibration modes. The usual estimation of the oxygen to silicon ratio by the wave number of the Si-O-Si stretching band was not accurate for films far from stoichiometry. These off-stoichiometric films also showed a broader Si-O-Si stretching peak than the stoichiometric ones, indicating a higher bonding disorder. The position of the Si-O-Si bending and rocking modes did not depend on the film composition. On the other hand, the peak position of the Si-H modes were found strongly dependent on the Si environment. By single-wavelength ellipsometry at lambda=632.8 nm the refractive index n was found to range between 1.45 (SiO2) and 2.04 (SiO0.06H0.36). Electron spin resonance measurements showed that stoichiometric films presented the well known E' center (.Siequivalent toO(3)) with concentrations in the 10(16)-10(17) cm(-3) range, while for Si-rich films (x<1) the Si dangling bond center (Si-DB, .Siequivalent toSi(3)) was the only detectable defect, with concentrations in the 10(18)-10(19) cm(-3) range. In near-stoichiometric films both E-' and Si-DB centers were found. | |
| dc.description.department | Depto. de Estructura de la Materia, Física Térmica y Electrónica | |
| dc.description.faculty | Fac. de Ciencias Físicas | |
| dc.description.refereed | TRUE | |
| dc.description.sponsorship | Spanish CICYT | |
| dc.description.status | pub | |
| dc.eprint.id | https://eprints.ucm.es/id/eprint/26102 | |
| dc.identifier.doi | 10.1063/1.1626798 | |
| dc.identifier.issn | 0021-8979 | |
| dc.identifier.officialurl | http://dx.doi.org/10.1063/1.1626798 | |
| dc.identifier.relatedurl | http://scitation.aip.org | |
| dc.identifier.uri | https://hdl.handle.net/20.500.14352/51127 | |
| dc.issue.number | 12 | |
| dc.journal.title | Journal of Applied Physics | |
| dc.language.iso | eng | |
| dc.page.final | 7469 | |
| dc.page.initial | 7462 | |
| dc.publisher | American Institute of Physics | |
| dc.relation.projectID | TIC 01-1253 | |
| dc.rights.accessRights | open access | |
| dc.subject.cdu | 537 | |
| dc.subject.keyword | Chemical-Vapor-Deposition | |
| dc.subject.keyword | Silicon-Rich Oxide | |
| dc.subject.keyword | H FIlms | |
| dc.subject.keyword | Optical-Properties | |
| dc.subject.keyword | Si/SiO2 Interface | |
| dc.subject.keyword | Spin-Resonance | |
| dc.subject.keyword | Oxygen | |
| dc.subject.keyword | SiO2 | |
| dc.subject.keyword | Nanocrystals | |
| dc.subject.keyword | System. | |
| dc.subject.ucm | Electricidad | |
| dc.subject.ucm | Electrónica (Física) | |
| dc.subject.unesco | 2202.03 Electricidad | |
| dc.title | Bonding configuration and density of defects of SiOxHy thin films deposited by the electron cyclotron resonance plasma method | |
| dc.type | journal article | |
| dc.volume.number | 94 | |
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