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- Title
Synthesis of CdSe QDs with various stoichiometric ratios of Se under the influence of ethanol/ethylenediamine for photovoltaic application.
- Authors
Abinaya, S.; Vinoth, G.; Kadiresan, Mohan Rangam
- Abstract
A sincere effort has been taken to design and fabricate a Cadmium Selenide (CdSe) Quantum Dot solar cell by varying the concentration of Se (0.1, 0.2, and 0.3 mmol) using ethanol and ethylenediamine as solvents in equal ratio. The proposed solar cell is tested for photoconversion efficiency with different sizes of the quantum dots (7 nm, 8 nm, and 8.9 nm). The XRD pattern reveals that CdSe quantum dots has attained cubic structure with face-centered lattice. The prepared quantum dots are subjected to UV–Visible spectroscopic study and bandgaps are obtained as 3.02 eV, 2.91 eV, and 2.89 eV for 7 nm, 8 nm, and 8.9 nm quantum dots, respectively. In the photoluminescence spectroscopy, two emission peaks are observed at 370 nm and at 473 nm which corresponds to the band–to–band transition. Among the different sizes of the quantum dots, the particle size of 7 nm has given higher photoconversion efficiency of 0.6680% with 0.1 mmol of Se in CdSe.
- Subjects
QUANTUM dots; ETHYLENEDIAMINE; ETHANOL; CADMIUM selenide; SOLAR cells
- Publication
Journal of Materials Science: Materials in Electronics, 2023, Vol 34, Issue 1, p1
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-022-09426-9