Electric Field Effects on Photoluminescence of CdSe Nanoparticles in a PMMA Film
External electric field effects on spectra and decay of photoluminescence (PL) as well as on absorption spectra were measured for CdSe nanoparticles in a poly(methyl methacrylate) (PMMA) film. Electrophotoluminescence (E-PL) spectra as well as electroabsorption spectra show a remarkable Stark shift...
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| Format: | Article |
| Language: | English |
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MDPI AG
2014-06-01
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| Series: | Crystals |
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| Online Access: | http://www.mdpi.com/2073-4352/4/2/152 |
| _version_ | 1811184372192116736 |
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| author | Takakazu Nakabayashi Ruriko Ohshima Nobuhiro Ohta |
| author_facet | Takakazu Nakabayashi Ruriko Ohshima Nobuhiro Ohta |
| author_sort | Takakazu Nakabayashi |
| collection | DOAJ |
| description | External electric field effects on spectra and decay of photoluminescence (PL) as well as on absorption spectra were measured for CdSe nanoparticles in a poly(methyl methacrylate) (PMMA) film. Electrophotoluminescence (E-PL) spectra as well as electroabsorption spectra show a remarkable Stark shift which depends on the particle size, indicating a large electric dipole moment in the first exciton state. The E-PL spectra also show that PL of CdSe is quenched by application of electric fields, and the magnitude of the field-induced quenching becomes larger with increasing size. The PL decay profiles observed in the absence and presence of electric field show that the field-induced quenching of PL mainly originates from the field-induced decrease in population of the emitting state prepared through the relaxation from the photoexcited state. |
| first_indexed | 2024-04-11T13:11:09Z |
| format | Article |
| id | doaj.art-0f353799768e4a1e9a7500dd306dd993 |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-04-11T13:11:09Z |
| publishDate | 2014-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-0f353799768e4a1e9a7500dd306dd9932022-12-22T04:22:34ZengMDPI AGCrystals2073-43522014-06-014215216710.3390/cryst4020152cryst4020152Electric Field Effects on Photoluminescence of CdSe Nanoparticles in a PMMA FilmTakakazu Nakabayashi0Ruriko Ohshima1Nobuhiro Ohta2Research Institute for Electronic Science (RIES), Hokkaido University, Sapporo 001-0020, JapanResearch Institute for Electronic Science (RIES), Hokkaido University, Sapporo 001-0020, JapanResearch Institute for Electronic Science (RIES), Hokkaido University, Sapporo 001-0020, JapanExternal electric field effects on spectra and decay of photoluminescence (PL) as well as on absorption spectra were measured for CdSe nanoparticles in a poly(methyl methacrylate) (PMMA) film. Electrophotoluminescence (E-PL) spectra as well as electroabsorption spectra show a remarkable Stark shift which depends on the particle size, indicating a large electric dipole moment in the first exciton state. The E-PL spectra also show that PL of CdSe is quenched by application of electric fields, and the magnitude of the field-induced quenching becomes larger with increasing size. The PL decay profiles observed in the absence and presence of electric field show that the field-induced quenching of PL mainly originates from the field-induced decrease in population of the emitting state prepared through the relaxation from the photoexcited state.http://www.mdpi.com/2073-4352/4/2/152CdSeelectric field effectsphotoluminescencefield-induced quenching |
| spellingShingle | Takakazu Nakabayashi Ruriko Ohshima Nobuhiro Ohta Electric Field Effects on Photoluminescence of CdSe Nanoparticles in a PMMA Film Crystals CdSe electric field effects photoluminescence field-induced quenching |
| title | Electric Field Effects on Photoluminescence of CdSe Nanoparticles in a PMMA Film |
| title_full | Electric Field Effects on Photoluminescence of CdSe Nanoparticles in a PMMA Film |
| title_fullStr | Electric Field Effects on Photoluminescence of CdSe Nanoparticles in a PMMA Film |
| title_full_unstemmed | Electric Field Effects on Photoluminescence of CdSe Nanoparticles in a PMMA Film |
| title_short | Electric Field Effects on Photoluminescence of CdSe Nanoparticles in a PMMA Film |
| title_sort | electric field effects on photoluminescence of cdse nanoparticles in a pmma film |
| topic | CdSe electric field effects photoluminescence field-induced quenching |
| url | http://www.mdpi.com/2073-4352/4/2/152 |
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