Journal
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
Volume 33, Issue 14, Pages 11414-11419Publisher
SPRINGER
DOI: 10.1007/s10854-022-08114-y
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Funding
- Foundation for Science and Technology of the Ministry of Education and Training [B2020-DHH-11]
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The colloidal CdSexS1-x ternary nanoalloys were synthesized using phosphine-free solvents. By adjusting the chemical composition, the bandgaps of the nanoalloys could be tuned. The influence of lattice strain on the carrier dynamics of the CdSexS1-x nanoalloys was investigated.
The colloidal CdSexS1-x ternary nanoalloys were prepared by fine-tuning the chemical composition using phosphine-free solvents. With an increase in Se content, the bandgaps may be changed from 2.81 to 1.95 eV. The influence of lattice strain on the carrier dynamics of CdSexS1-x nanoalloys has been investigated. The structural investigation of the nanoalloys reveals a linear expansion of the Zinc cubic lattice with increasing S content, demonstrating that the lattice strain was caused by the difference between Cd-S and Cd-Se bond lengths. Photoluminescence decay time of CdSexS1-x nanoalloys decreased with increasing lattice constant, indicating that lattice strain affects both radiative and nonradiative relaxation rates.
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