Dr Marina Leontiadou M.Leontiadou@salford.ac.uk
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Influence of elevated radiative lifetime on efficiency of CdSe/CdTe Type II colloidal quantum dot based solar cells
Leontiadou, M; Tyrrell, EJ; Smith, CT; Espinbarro-Velasquez, D; Miloszewski, JM; Walsh, TJE; Binks, D; Tomic, S
Authors
EJ Tyrrell
CT Smith
D Espinbarro-Velasquez
JM Miloszewski
TJE Walsh
D Binks
S Tomic
Abstract
Colloidal quantum dots (CQDs) are promising materials for solar cells because their optoelectronic properties are easily adjusted by control of their size, structure and composition. We present calculations of the band gap and radiative lifetime for varying core diameter and shell thickness of CdSe/CdTe core/shell Type II CQDs using a combination of single particle (2,6)-band k·pk·p and many-electron configuration interaction (CI) Hamiltonians. These calculations are validated by comparison with experimental absorption spectra and photoluminescence decay data. The results are then incorporated into a model of photovoltaic efficiency which demonstrates how the overall performance of a solar cell based on Type II CQDs is affected by changes in the core/shell geometry. The largest effect on photovoltaic efficiency is found to be due to the longer radiative lifetime produced by increasing the shell thickness.
Citation
Leontiadou, M., Tyrrell, E., Smith, C., Espinbarro-Velasquez, D., Miloszewski, J., Walsh, T., …Tomic, S. (2016). Influence of elevated radiative lifetime on efficiency of CdSe/CdTe Type II colloidal quantum dot based solar cells. Solar Energy Materials and Solar Cells, 159, 657-663. https://doi.org/10.1016/j.solmat.2016.01.018
Journal Article Type | Article |
---|---|
Acceptance Date | Jan 17, 2016 |
Publication Date | Feb 4, 2016 |
Deposit Date | Jan 18, 2016 |
Publicly Available Date | Apr 5, 2016 |
Journal | Solar Energy Materials and Solar Cells |
Print ISSN | 0927-0248 |
Publisher | Elsevier |
Volume | 159 |
Pages | 657-663 |
DOI | https://doi.org/10.1016/j.solmat.2016.01.018 |
Publisher URL | http://dx.doi.org/10.1016/j.solmat.2016.01.018 |
Related Public URLs | http://www.journals.elsevier.com/solar-energy-materials-and-solar-cells/ |
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Licence
http://creativecommons.org/licenses/by/4.0/
Publisher Licence URL
http://creativecommons.org/licenses/by/4.0/
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