Shell thickness influence on the carrier dynamics of InP/ZnS QDs
InP/ZnS core/shell quantum dots (QDs) have been widely applied in many fields due to their excellent luminescence performance. In this study, the correlation between the ZnS shell thickness and the ultrafast carrier dynamics in InP/ZnS QDs was investigated by using femtosecond time-resolved transien...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2024-06-01
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| Series: | Chemical Physics Impact |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2667022424001233 |
| _version_ | 1797232828107194368 |
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| author | Yanmin Xu Lihe Yan Shaomin Fu Yuanyuan Lv |
| author_facet | Yanmin Xu Lihe Yan Shaomin Fu Yuanyuan Lv |
| author_sort | Yanmin Xu |
| collection | DOAJ |
| description | InP/ZnS core/shell quantum dots (QDs) have been widely applied in many fields due to their excellent luminescence performance. In this study, the correlation between the ZnS shell thickness and the ultrafast carrier dynamics in InP/ZnS QDs was investigated by using femtosecond time-resolved transient absorption spectroscopy and time-resolved photoluminescence techniques. We found that a thicker ZnS shell could confine more carriers to the InP core, thus effectively weakening the interactions between the carriers in the core and the interfacial defect states; this further enhanced the quantum yields and photoluminescence properties in InP/ZnS QDs. |
| first_indexed | 2024-04-24T16:06:28Z |
| format | Article |
| id | doaj.art-7eeefa3c732142358787432f34d1c371 |
| institution | Directory Open Access Journal |
| issn | 2667-0224 |
| language | English |
| last_indexed | 2024-04-24T16:06:28Z |
| publishDate | 2024-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Chemical Physics Impact |
| spelling | doaj.art-7eeefa3c732142358787432f34d1c3712024-04-01T04:04:35ZengElsevierChemical Physics Impact2667-02242024-06-018100579Shell thickness influence on the carrier dynamics of InP/ZnS QDsYanmin Xu0Lihe Yan1Shaomin Fu2Yuanyuan Lv3School of Communication and Information Engineering, Xi'an University of Science and Technology, Xi'an, 710054, PR China; Corresponding author.Key Laboratory for Physical Electronics and Devices of the Ministry of Education & Shaanxi Key Lab of Information Photonic Technique, School of Electronics & Information Engineering, Xi'an Jiaotong University, Xi'an, 710049, PR ChinaChina Great Wall Industry Corporation Navigation Co., Ltd., Beijing 100089, PR ChinaSchool of Communication and Information Engineering, Xi'an University of Science and Technology, Xi'an, 710054, PR ChinaInP/ZnS core/shell quantum dots (QDs) have been widely applied in many fields due to their excellent luminescence performance. In this study, the correlation between the ZnS shell thickness and the ultrafast carrier dynamics in InP/ZnS QDs was investigated by using femtosecond time-resolved transient absorption spectroscopy and time-resolved photoluminescence techniques. We found that a thicker ZnS shell could confine more carriers to the InP core, thus effectively weakening the interactions between the carriers in the core and the interfacial defect states; this further enhanced the quantum yields and photoluminescence properties in InP/ZnS QDs.http://www.sciencedirect.com/science/article/pii/S2667022424001233InP/ZnS core/shell quantum dotsTransient absorption spectrumNonlinear opticsCarrier dynamicsShell thickness |
| spellingShingle | Yanmin Xu Lihe Yan Shaomin Fu Yuanyuan Lv Shell thickness influence on the carrier dynamics of InP/ZnS QDs Chemical Physics Impact InP/ZnS core/shell quantum dots Transient absorption spectrum Nonlinear optics Carrier dynamics Shell thickness |
| title | Shell thickness influence on the carrier dynamics of InP/ZnS QDs |
| title_full | Shell thickness influence on the carrier dynamics of InP/ZnS QDs |
| title_fullStr | Shell thickness influence on the carrier dynamics of InP/ZnS QDs |
| title_full_unstemmed | Shell thickness influence on the carrier dynamics of InP/ZnS QDs |
| title_short | Shell thickness influence on the carrier dynamics of InP/ZnS QDs |
| title_sort | shell thickness influence on the carrier dynamics of inp zns qds |
| topic | InP/ZnS core/shell quantum dots Transient absorption spectrum Nonlinear optics Carrier dynamics Shell thickness |
| url | http://www.sciencedirect.com/science/article/pii/S2667022424001233 |
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