The feasibility of high-efficiency InAs/GaAs quantum dot intermediate band solar cells

Mellor Null, Alexander Virgil and Luque López, Antonio and Tobías Galicia, Ignacio and Martí Vega, Antonio (2014). The feasibility of high-efficiency InAs/GaAs quantum dot intermediate band solar cells. "Solar Energy Materials and Solar Cells", v. 130 ; pp. 225-233. ISSN 0927-0248. https://doi.org/10.1016/j.solmat.2014.07.006.

Description

Title: The feasibility of high-efficiency InAs/GaAs quantum dot intermediate band solar cells
Author/s:
  • Mellor Null, Alexander Virgil
  • Luque López, Antonio
  • Tobías Galicia, Ignacio
  • Martí Vega, Antonio
Item Type: Article
Título de Revista/Publicación: Solar Energy Materials and Solar Cells
Date: 30 November 2014
ISSN: 0927-0248
Volume: 130
Subjects:
Faculty: Instituto de Energía Solar (IES) (UPM)
Department: Electrónica Física
Creative Commons Licenses: None

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Abstract

In recent years, all the operating principles of intermediate band behaviour have been demonstrated in InAs/GaAs quantum dot (QD) solar cells. Having passed this hurdle, a new stage of research is underway, whose goal is to deliver QD solar cells with efficiencies above those of state-of-the-art single-gap devices. In this work, we demonstrate that this is possible, using the present InAs/GaAs QD system, if the QDs are made to be radiatively dominated, and if absorption enhancements are achieved by a combination of increasing the number of QDs and light trapping. A quantitative prediction is also made of the absorption enhancements required, suggesting that a 30 fold increase in the number of QDs and a light trapping enhancement of 10 are sufficient. Finally, insight is given into the relative merits of absorption enhancement via increasing QD numbers and via light trapping.

Funding Projects

TypeCodeAcronymLeaderTitle
FP7283798NGCPVAntonio LuqueA new generation of concentrator photovoltaic cells, modules and systems

More information

Item ID: 31134
DC Identifier: http://oa.upm.es/31134/
OAI Identifier: oai:oa.upm.es:31134
DOI: 10.1016/j.solmat.2014.07.006
Official URL: http://www.sciencedirect.com/science/article/pii/S0927024814003675
Deposited by: Prof. Antonio Luque López
Deposited on: 19 Dec 2014 12:51
Last Modified: 30 Nov 2015 23:56
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