دورية أكاديمية
Interaction of ZnO nanorods with plasmonic metal nanoparticles and semiconductor quantum dots.
| العنوان: | Interaction of ZnO nanorods with plasmonic metal nanoparticles and semiconductor quantum dots. |
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| المؤلفون: | Prajapati KN; School of Physics, Indian Institute of Science Education and Research, Thiruvananthapuram 695551, India., Johns B; School of Physics, Indian Institute of Science Education and Research, Thiruvananthapuram 695551, India., Bandopadhyay K; Department of Functional Materials, Łukasiewicz Research Network-Institute of Electronic Materials Technology, Wolczynska 133, Warsaw, Poland., Silva SRP; Advanced Technology Institute, University of Surrey, Guildford GU2 7XH, United Kingdom., Mitra J; School of Physics, Indian Institute of Science Education and Research, Thiruvananthapuram 695551, India. |
| المصدر: | The Journal of chemical physics [J Chem Phys] 2020 Feb 14; Vol. 152 (6), pp. 064704. |
| نوع المنشور: | Journal Article |
| اللغة: | English |
| بيانات الدورية: | Publisher: American Institute of Physics Country of Publication: United States NLM ID: 0375360 Publication Model: Print Cited Medium: Internet ISSN: 1089-7690 (Electronic) Linking ISSN: 00219606 NLM ISO Abbreviation: J Chem Phys Subsets: PubMed not MEDLINE; MEDLINE |
| أسماء مطبوعة: | Publication: New York, NY : American Institute of Physics Original Publication: Lancaster, Pa., American Institute of Physics. |
| مستخلص: | We model the enhancement of near band edge emission from ZnO nanorods using plasmonic metal nanoparticles and compare it with emission enhancement from ZnO with semiconducting quantum dots. Selected CdSe quantum dots with absorption energies close to those of Ag and Au nanoparticles are chosen to construct model systems with ZnO to comprehend the role of ZnO's intrinsic defects and plasmonic excitation in realizing the spectrally selective luminescence enhancement. Excitation wavelength dependent photoluminescence spectra along with theoretical models quantifying the related transitions and plasmonic absorption reveal that a complex mechanism of charge transfer between the ZnO nanorods and metal nanoparticles or quantum dots is essential along with an optimal energy band alignment for realizing emission enhancement. The theoretical model presented also provides a direct method of quantifying the relative transition rate constants associated with various electronic transitions in ZnO and their change upon the incorporation of plasmonic nanoparticles. The results indicate that, while the presence of deep level defect states may facilitate the essential charge transfer process between ZnO and the plasmonic nanoparticles, their presence alone does not guarantee UV emission enhancement and strong plasmonic coupling between the two systems. The results offer clues to designing novel multicomponent systems with coupled plasmonic and charge transfer effects for applications in charge localization, energy harvesting, and luminescence enhancement, especially in electrically triggered nanophotonic applications. |
| تواريخ الأحداث: | Date Created: 20200217 Latest Revision: 20200218 |
| رمز التحديث: | 20221213 |
| DOI: | 10.1063/1.5138944 |
| PMID: | 32061232 |
| قاعدة البيانات: | MEDLINE |
Find this article in full text from Scitation. | تدمد: | 1089-7690 |
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| DOI: | 10.1063/1.5138944 |