Lateral quantum confinement regulates charge carrier transfer and biexciton interaction in CdSe/CdSeS core/crown nanoplatelets
| العنوان: | Lateral quantum confinement regulates charge carrier transfer and biexciton interaction in CdSe/CdSeS core/crown nanoplatelets |
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| المؤلفون: | Yige Yao, Xiaotian Bao, Yunke Zhu, Xinyu Sui, An Hu, Peng Bai, Shufeng Wang, Hong Yang, Xinfeng Liu, Yunan Gao |
| المصدر: | Nano Research. |
| بيانات النشر: | Springer Science and Business Media LLC, 2023. |
| سنة النشر: | 2023 |
| مصطلحات موضوعية: | Condensed Matter - Materials Science, Condensed Matter - Mesoscale and Nanoscale Physics, Mesoscale and Nanoscale Physics (cond-mat.mes-hall), Materials Science (cond-mat.mtrl-sci), FOS: Physical sciences, General Materials Science, Electrical and Electronic Engineering, Condensed Matter Physics, Atomic and Molecular Physics, and Optics |
| الوصف: | Charge carrier dynamics essentially determine the performance of various optoelectronic applications of colloidal semiconductor nanocrystals. Among them, two-dimensional nanoplatelets provide new adjustment freedom for their unique core/crown heterostructure. Herein, we demonstrate that by fine-tuning the core size and the lateral quantum confinement, the charge carrier transfer rate from the crown to the core can be varied by one order of magnitude in CdSe/CdSeS core/alloy-crown nanoplatelets. In addition, the transfer can be affected by a carrier blocking mechanism, i.e., the filled carriers hinder further possible transfer. Furthermore, we found that the biexciton interaction is oppositely affected by quantum confinement and electron delocalization, resulting in a non-monotonic variation of the biexciton binding energy with the emission wavelength. This work provides new observations and insights into the charge carrier transfer dynamics and exciton interactions in colloidal nanoplatelets and will promote their further applications in lasing, display, sensing, etc. main and SI |
| تدمد: | 1998-0000 1998-0124 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::99556bf9d9424935851856f6201f976d https://doi.org/10.1007/s12274-023-5542-0 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....99556bf9d9424935851856f6201f976d |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Springer Verlag. | تدمد: | 19980000 19980124 |
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