| Author | Hörmann, Ute | dc.contributor.author |
| Author | Kaiser, Ute | dc.contributor.author |
| Author | Albrecht, Martin | dc.contributor.author |
| Author | Geserick, Jasmin | dc.contributor.author |
| Author | Husing, Nicola | dc.contributor.author |
| Date of accession | 2022-05-25T13:39:54Z | dc.date.accessioned |
| Available in OPARU since | 2022-05-25T13:39:54Z | dc.date.available |
| Date of first publication | 2010-02-26 | dc.date.issued |
| Abstract | Two samples of mesoporous anatase nanoparticles, prepared by the sol-gel method, were characterised by Cs-corrected high resolution transmission electron microscopy (HRTEM), X-ray powder diffraction (XRD) and Raman spectroscopy. Statistical evaluation of TEM data showed an average diameter of these crystallites of 8.8 nm and 11.1 nm, respectively. Optical spectroscopy by cathodoluminescence (CL) in a scanning electron microscope (SEM) showed free exciton transitions related to the direct and the indirect band gap of anatase TiO2. From the analysis of the excited states of the free excitons an exciton binding energy of 10 meV and a Bohr radius of 2.35 nm is obtained. The small Bohr radius could explain the absence of quantum confinement in the particles presented in this study. | dc.description.abstract |
| Language | en | dc.language.iso |
| Publisher | Universität Ulm | dc.publisher |
| License | CC BY 4.0 International | dc.rights |
| Link to license text | https://creativecommons.org/licenses/by/4.0/ | dc.rights.uri |
| Keyword | TIO2 NANOCRYSTALS | dc.subject |
| Keyword | RAMAN-SCATTERING | dc.subject |
| Dewey Decimal Group | DDC 540 / Chemistry & allied sciences | dc.subject.ddc |
| LCSH | Raman effect | dc.subject.lcsh |
| LCSH | Semiconductors | dc.subject.lcsh |
| Title | Structure and luminescence of sol-gel synthesized anatase nanoparticles | dc.title |
| Resource type | Beitrag zu einer Konferenz | dc.type |
| SWORD Date | 2022-02-17T00:00:20Z | dc.date.updated |
| Version | publishedVersion | dc.description.version |
| DOI | http://dx.doi.org/10.18725/OPARU-43233 | dc.identifier.doi |
| URN | http://nbn-resolving.de/urn:nbn:de:bsz:289-oparu-43309-7 | dc.identifier.urn |
| GND | Halbleiter | dc.subject.gnd |
| Faculty | Fakultät für Naturwissenschaften | uulm.affiliationGeneral |
| Institution | ZE Elektronenmikroskopie | uulm.affiliationSpecific |
| Institution | Institut für Anorganische Chemie I (Materialien und Katalyse) | uulm.affiliationSpecific |
| Peer review | ja | uulm.peerReview |
| DCMI Type | Text | uulm.typeDCMI |
| Category | Publikationen | uulm.category |
| In cooperation with | Leibniz-Institut für Kristallzüchtung | uulm.cooperation |
| DOI of original publication | 10.1088/1742-6596/209/1/012039 | dc.relation1.doi |
| Source - Title of source | Journal of Physics: Conference Series | source.title |
| Source - Place of publication | IOP Publishing | source.publisher |
| Source - Volume | 209 | source.volume |
| Source - Issue | 1 | source.issue |
| Source - Year | 2010 | source.year |
| Source - Article number | 012039 | source.articleNumber |
| Source - ISSN | 1742-6588 | source.identifier.issn |
| Source - eISSN | 1742-6596 | source.identifier.eissn |
| Conference name | 16th International Conference on Microscopy of Semiconducting Materials | uulm.conferenceName |
| Conference place | Oxford | uulm.conferencePlace |
| Conference start date | 2009-03-17 | uulm.conferenceStartDate |
| Conference end date | 2009-03-20 | uulm.conferenceEndDate |
| Community | Zentrale Einrichtungen | uulm.community |
| Community | Fakultät für Naturwissenschaften | uulm.community |
| WoS | 000283739100039 | uulm.identifier.wos |
| Bibliography | uulm | uulm.bibliographie |
