Four-Band Hamiltonian for fast calculations in intermediate-band solar cells

Luque López, Antonio and Panchak, Aleksandr and Vlasov, Alexey and Martí Vega, Antonio and Andreev, Viacheslav (2015). Four-Band Hamiltonian for fast calculations in intermediate-band solar cells. "Physica E: Low-dimensional Systems and Nanostructures", v. 76 ; pp. 127-134. ISSN 1386-9477. https://doi.org/10.1016/j.physe.2015.10.019.

Description

Title: Four-Band Hamiltonian for fast calculations in intermediate-band solar cells
Author/s:
  • Luque López, Antonio
  • Panchak, Aleksandr
  • Vlasov, Alexey
  • Martí Vega, Antonio
  • Andreev, Viacheslav
Item Type: Article
Título de Revista/Publicación: Physica E: Low-dimensional Systems and Nanostructures
Date: October 2015
Volume: 76
Subjects:
Freetext Keywords: Photovoltaics, Quantum calculations, Photon absorption, Quantum efficiency, k·p methods
Faculty: Instituto de Energía Solar (IES) (UPM)
Department: Electrónica Física
UPM's Research Group: Silicio y Nuevos Conceptos para Células Solares
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The 8-dimensional Luttinger–Kohn–Pikus–Bir Hamiltonian matrix may be made up of four 4-dimensional blocks. A 4-band Hamiltonian is presented, obtained from making the non-diagonal blocks zero. The parameters of the new Hamiltonian are adjusted to fit the calculated effective masses and strained QD bandgap with the measured ones. The 4-dimensional Hamiltonian thus obtained agrees well with measured quantum efficiency of a quantum dot intermediate band solar cell and the full absorption spectrum can be calculated in about two hours using Mathematica© and a notebook. This is a hundred times faster than with the commonly-used 8-band Hamiltonian and is considered suitable for helping design engineers in the development of nanostructured solar cells.

Funding Projects

TypeCodeAcronymLeaderTitle
FP7283798NGCPVProf. Antonio LuqueA new generation of concentrator photovoltaic cells, modules and systems
Government of SpainENE2012-37804-C02-01PROMESAProf. Antonio MartíUnspecified

More information

Item ID: 38266
DC Identifier: http://oa.upm.es/38266/
OAI Identifier: oai:oa.upm.es:38266
DOI: 10.1016/j.physe.2015.10.019
Official URL: https://www.sciencedirect.com/science/article/pii/S1386947715302484?via%3Dihub
Deposited by: Prof. Antonio Luque López
Deposited on: 02 Nov 2015 13:53
Last Modified: 03 Jun 2019 15:06
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