A study of nitrogen incorporation in pyramidal site-controlled quantum dots
<p>Abstract</p> <p>We present the results of a study of nitrogen incorporation in metalorganic-vapour-phase epitaxy-grown site-controlled quantum dots (QDs). We report for the first time on a significant incorporation (approximately 0.3%), producing a noteworthy red shift (at least...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2011-01-01
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| Series: | Nanoscale Research Letters |
| Subjects: | |
| Online Access: | http://www.nanoscalereslett.com/content/6/1/567 |
| _version_ | 1797708291812360192 |
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| author | Juska Gediminas Dimastrodonato Valeria Mereni Lorenzo Gocalinska Agnieszka Pelucchi Emanuele |
| author_facet | Juska Gediminas Dimastrodonato Valeria Mereni Lorenzo Gocalinska Agnieszka Pelucchi Emanuele |
| author_sort | Juska Gediminas |
| collection | DOAJ |
| description | <p>Abstract</p> <p>We present the results of a study of nitrogen incorporation in metalorganic-vapour-phase epitaxy-grown site-controlled quantum dots (QDs). We report for the first time on a significant incorporation (approximately 0.3%), producing a noteworthy red shift (at least 50 meV) in some of our samples. Depending on the level of nitrogen incorporation/exposure, strong modifications of the optical features are found (variable distribution of the emission homogeneity, fine-structure splitting, few-particle effects). We discuss our results, especially in relation to a specific reproducible sample which has noticeable features: the usual pattern of the excitonic transitions is altered and the fine-structure splitting is suppressed to vanishing values. Distinctively, nitrogen incorporation can be achieved without detriment to the optical quality, as confirmed by narrow linewidths and photon correlation spectroscopy.</p> |
| first_indexed | 2024-03-12T06:20:17Z |
| format | Article |
| id | doaj.art-e0e930cd68f74eeca6e9e5646805405d |
| institution | Directory Open Access Journal |
| issn | 1931-7573 1556-276X |
| language | English |
| last_indexed | 2024-03-12T06:20:17Z |
| publishDate | 2011-01-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Nanoscale Research Letters |
| spelling | doaj.art-e0e930cd68f74eeca6e9e5646805405d2023-09-03T02:19:26ZengSpringerOpenNanoscale Research Letters1931-75731556-276X2011-01-0161567A study of nitrogen incorporation in pyramidal site-controlled quantum dotsJuska GediminasDimastrodonato ValeriaMereni LorenzoGocalinska AgnieszkaPelucchi Emanuele<p>Abstract</p> <p>We present the results of a study of nitrogen incorporation in metalorganic-vapour-phase epitaxy-grown site-controlled quantum dots (QDs). We report for the first time on a significant incorporation (approximately 0.3%), producing a noteworthy red shift (at least 50 meV) in some of our samples. Depending on the level of nitrogen incorporation/exposure, strong modifications of the optical features are found (variable distribution of the emission homogeneity, fine-structure splitting, few-particle effects). We discuss our results, especially in relation to a specific reproducible sample which has noticeable features: the usual pattern of the excitonic transitions is altered and the fine-structure splitting is suppressed to vanishing values. Distinctively, nitrogen incorporation can be achieved without detriment to the optical quality, as confirmed by narrow linewidths and photon correlation spectroscopy.</p>http://www.nanoscalereslett.com/content/6/1/567MOVPEsite-controlled quantum dotsdilute nitride semiconductors |
| spellingShingle | Juska Gediminas Dimastrodonato Valeria Mereni Lorenzo Gocalinska Agnieszka Pelucchi Emanuele A study of nitrogen incorporation in pyramidal site-controlled quantum dots Nanoscale Research Letters MOVPE site-controlled quantum dots dilute nitride semiconductors |
| title | A study of nitrogen incorporation in pyramidal site-controlled quantum dots |
| title_full | A study of nitrogen incorporation in pyramidal site-controlled quantum dots |
| title_fullStr | A study of nitrogen incorporation in pyramidal site-controlled quantum dots |
| title_full_unstemmed | A study of nitrogen incorporation in pyramidal site-controlled quantum dots |
| title_short | A study of nitrogen incorporation in pyramidal site-controlled quantum dots |
| title_sort | study of nitrogen incorporation in pyramidal site controlled quantum dots |
| topic | MOVPE site-controlled quantum dots dilute nitride semiconductors |
| url | http://www.nanoscalereslett.com/content/6/1/567 |
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