| 1. Identity statement | |
| Reference Type | Journal Article |
| Site | mtc-m16b.sid.inpe.br |
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Identifier | 6qtX3pFwXQZGivnK2Y/QAkT2 |
| Repository | sid.inpe.br/mtc-m17@80/2007/06.28.18.06 (restricted access) |
| Last Update | 2007:06.28.18.06.02 (UTC) administrator |
| Metadata Repository | sid.inpe.br/mtc-m17@80/2007/06.28.18.06.03 |
| Metadata Last Update | 2018:06.05.03.34.27 (UTC) administrator |
| Secondary Key | INPE-14767-PRE/9738 |
| ISSN | 0169-4332 |
| Citation Key | AbramofMirBelUetFer:2007:InNaOx |
| Title | An investigation of natural oxidation process on stain-etched nanoporous silicon by micro-Raman spectroscopy  |
| Year | 2007 |
| Month | June |
| Access Date | 2024, May 19 |
| Secondary Type | PRE PI |
| Number of Files | 1 |
| Size | 563 KiB |
| 2. Context | |
| Author | 1 Abramof, Patrícia Guimarães 2 Miranda, Cláudia Renata Borges 3 Beloto, Antônio Fernando 4 Ueta, Antonio Yukio 5 Ferreira, Neidenêi Gomes |
| Resume Identifier | 1 2 3 4 8JMKD3MGP5W/3C9JGJU |
| Group | 1 LAS-INPE-MCT-BR 2 LAS-INPE-MCT-BR 3 LAS-INPE-MCT-BR 4 LAS-INPE-MCT-BR 5 LAS-INPE-MCT-BR |
| Affiliation | 1 Instituto Nacional de Pesquisas Espaciais (INPE) 2 Instituto Nacional de Pesquisas Espaciais (INPE) 3 Instituto Nacional de Pesquisas Espaciais (INPE) 4 Instituto Nacional de Pesquisas Espaciais (INPE) 5 Instituto Nacional de Pesquisas Espaciais (INPE) |
| Author e-Mail Address | 1 2 3 4 5 neidenei@las.inpe.br |
| Journal | Applied Surface Science |
| Volume | 253 |
| Number | 17 |
| Pages | 7065-7068 |
| History (UTC) | 2007-12-19 23:14:26 :: simone -> administrator :: 2012-10-23 23:55:43 :: administrator -> simone :: 2007 2013-02-20 15:20:00 :: simone -> administrator :: 2007 2018-06-05 03:34:27 :: administrator -> marciana :: 2007 |
| 3. Content and structure | |
| Is the master or a copy? | is the master |
| Content Stage | completed |
| Transferable | 1 |
| Content Type | External Contribution |
| Keywords | Porous silicon Phonon confinement model Raman spectrocospy Oxidation |
| Abstract | Micro-Raman spectra of porous silicon (PS) samples as-formed, from stain etching process using heavily doped silicon wafers, and after 750 days storage in air were analyzed around Si peak (300600 cm−1) and at photoluminescence (PL) range (3008000 cm−1). The first-order Raman spectra in the vicinity of Si peak were fitted from phonon confinement model including a term taking into account the amorphous phase. This analysis allowed the determination of the correlation length, which corresponds to the crystallite size, also considering the PS natural oxidation process. The photoluminescence band, generated by Si crystallites located on the outermost part of the PS layer, was also fitted with a Gaussian distribution. In order to investigate the porous silicon nanostructure, the micro-Raman spectra were measured for different sets of porous silicon samples. These spectra showed good reproducibility and the effects of the natural oxidation at different periods. A slight decrease in the crystallite size was observed for all samples sets studied, while the spectral part related to the amorphous phase did not describe significant changes. The central position of PL band, analyzed after the oxidation process, exhibited consistently a shift to higher energies. In addition, top view high resolution scanning electron microscopy (HRSEM) images also confirmed a reasonable reproducibility and homogeneity. The results showed that after storing in air, natural oxidation can modify the Si crystallites size at the surface but not increase the amorphous phase. |
| Area | FISMAT |
| Arrangement | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > LABAS > An investigation of... |
| doc Directory Content | access |
| source Directory Content | there are no files |
| agreement Directory Content | there are no files |
| 4. Conditions of access and use | |
| Language | en |
| Target File | an investigation of natural.pdf |
| User Group | administrator simone |
| Visibility | shown |
| Copy Holder | SID/SCD |
| Archiving Policy | denypublisher denyfinaldraft24 |
| Read Permission | deny from all and allow from 150.163 |
| 5. Allied materials | |
| Next Higher Units | 8JMKD3MGPCW/3ESR3H2 |
| Dissemination | WEBSCI; PORTALCAPES; COMPENDEX. |
| Host Collection | lcp.inpe.br/ignes/2004/02.12.18.39 cptec.inpe.br/walmeida/2003/04.25.17.12 |
| 6. Notes | |
| Empty Fields | alternatejournal archivist callnumber copyright creatorhistory descriptionlevel documentstage doi e-mailaddress format isbn label lineage mark mirrorrepository nextedition notes orcid parameterlist parentrepositories previousedition previouslowerunit progress project readergroup rightsholder schedulinginformation secondarydate secondarymark session shorttitle sponsor subject tertiarymark tertiarytype typeofwork url versiontype |
| 7. Description control | |
| e-Mail (login) | marciana |
| update | |