Low temperature exciton-exciton annihilation in amphi-PIPE J-aggregates
The mobility of optically excited excitons on J-aggregates can be demonstrated by the phenomena of exciton-exciton annihilation. In this intensity-dependent process the collision of two excitons results in their annihilation and hence in a shortening of the mean excitation lifetime. By measuring th...
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| Format: | Article |
| Language: | English |
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Wiley
2006-01-01
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| Series: | International Journal of Photoenergy |
| Online Access: | http://dx.doi.org/10.1155/IJP/2006/84950 |
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| _version_ | 1832548895476940800 |
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| author | C. Spitz S. Daehne |
| author_facet | C. Spitz S. Daehne |
| author_sort | C. Spitz |
| collection | DOAJ |
| description | The mobility of optically excited excitons on J-aggregates can be demonstrated by the phenomena of exciton-exciton annihilation. In this intensity-dependent process the collision of two excitons results in their annihilation and hence in a shortening of the mean excitation lifetime. By measuring the intensity-dependent fluorescent lifetime in contrast to the predicted immobilization of the excitons at low temperature we could prove the excellent mobility of the excitons at a temperature (4K), which is far below their expected freezing point. |
| format | Article |
| id | doaj-art-7db706ee7ad8479dbd6c09b8f2284c96 |
| institution | Kabale University |
| issn | 1110-662X 1687-529X |
| language | English |
| publishDate | 2006-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Photoenergy |
| spelling | doaj-art-7db706ee7ad8479dbd6c09b8f2284c962025-02-03T06:12:45ZengWileyInternational Journal of Photoenergy1110-662X1687-529X2006-01-01200610.1155/IJP/2006/8495084950Low temperature exciton-exciton annihilation in amphi-PIPE J-aggregatesC. Spitz0S. Daehne1Department of Physics, University of Potsdam, am Neuen Palais 10, Potsdam 14469, GermanyBAM, Department of Analytical Chemistry, Berlin 12489, GermanyThe mobility of optically excited excitons on J-aggregates can be demonstrated by the phenomena of exciton-exciton annihilation. In this intensity-dependent process the collision of two excitons results in their annihilation and hence in a shortening of the mean excitation lifetime. By measuring the intensity-dependent fluorescent lifetime in contrast to the predicted immobilization of the excitons at low temperature we could prove the excellent mobility of the excitons at a temperature (4K), which is far below their expected freezing point.http://dx.doi.org/10.1155/IJP/2006/84950 |
| spellingShingle | C. Spitz S. Daehne Low temperature exciton-exciton annihilation in amphi-PIPE J-aggregates International Journal of Photoenergy |
| title | Low temperature exciton-exciton annihilation in amphi-PIPE J-aggregates |
| title_full | Low temperature exciton-exciton annihilation in amphi-PIPE J-aggregates |
| title_fullStr | Low temperature exciton-exciton annihilation in amphi-PIPE J-aggregates |
| title_full_unstemmed | Low temperature exciton-exciton annihilation in amphi-PIPE J-aggregates |
| title_short | Low temperature exciton-exciton annihilation in amphi-PIPE J-aggregates |
| title_sort | low temperature exciton exciton annihilation in amphi pipe j aggregates |
| url | http://dx.doi.org/10.1155/IJP/2006/84950 |
| work_keys_str_mv | AT cspitz lowtemperatureexcitonexcitonannihilationinamphipipejaggregates AT sdaehne lowtemperatureexcitonexcitonannihilationinamphipipejaggregates |