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The influence of quantum dot size on the sub-bandgap intraband photocurrent in intermediate band solar cells
Citation
Mellor Null, Alexander Virgil, Luque López, Antonio, Tobías Galicia, Ignacio and Martí Vega, Antonio (2012). The influence of quantum dot size on the sub-bandgap intraband photocurrent in intermediate band solar cells. "Applied Physics Letters", v. 101 (n. 13); pp.. ISSN 0003-6951. https://doi.org/10.1063/1.4755782.
Description
| Title: | The influence of quantum dot size on the sub-bandgap intraband photocurrent in intermediate band solar cells |
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| Author/s: |
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| Item Type: | Article |
| Título de Revista/Publicación: | Applied Physics Letters |
| Date: | September 2012 |
| ISSN: | 0003-6951 |
| Volume: | 101 |
| Subjects: | |
| Freetext Keywords: | absorption coefficients, bound states, conduction bands, ground states, numerical analysis, photoconductivity, photoemission, quantum dots, size effect, solar cells |
| Faculty: | E.T.S.I. Telecomunicación (UPM) |
| Department: | Otro |
| Creative Commons Licenses: | Recognition - No derivative works - Non commercial |
Abstract
The effect of quantum dot (QD) size on the performance of quantum dot intermediate band solar cells is investigated. A numerical model is used to calculate the bound state energy levels and the absorption coefficient of transitions from the ground state to all other states in the conduction band. Comparing with the current state of the art, strong absorption enhancements are found for smaller quantum dots, as well as a better positioning of the energy levels, which is expected to reduce thermal carrier escape. It is concluded that reducing the quantum dot size can increase sub-bandgap photocurrent and improve voltage preservation.
More information
| Item ID: | 16096 |
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| DC Identifier: | https://oa.upm.es/16096/ |
| OAI Identifier: | oai:oa.upm.es:16096 |
| DOI: | 10.1063/1.4755782 |
| Official URL: | http://apl.aip.org/resource/1/applab/v101/i13/p133... |
| Deposited by: | Memoria Investigacion |
| Deposited on: | 06 Jul 2013 07:42 |
| Last Modified: | 21 Apr 2016 16:26 |
