The segmental approximation in multijunction solar cells

Mintairov, M. A. and Kalyuzhnyy, Nikolay A. and Evstropov, V. V. and Lantratov, Vladimir M. and Mintairov, Sergey A. and Shvarts, Maxim Z. and Andreev, Viacheslav M. and Luque López, Antonio (2015). The segmental approximation in multijunction solar cells. "IEEE Journal of Photovoltaics", v. 5 (n. 4); pp. 1229-1236. ISSN 2156-3381. https://doi.org/10.1109/JPHOTOV.2015.2416006.

Description

Title: The segmental approximation in multijunction solar cells
Author/s:
  • Mintairov, M. A.
  • Kalyuzhnyy, Nikolay A.
  • Evstropov, V. V.
  • Lantratov, Vladimir M.
  • Mintairov, Sergey A.
  • Shvarts, Maxim Z.
  • Andreev, Viacheslav M.
  • Luque López, Antonio
Item Type: Article
Título de Revista/Publicación: IEEE Journal of Photovoltaics
Date: July 2015
ISSN: 2156-3381
Volume: 5
Subjects:
Freetext Keywords: Concentrator photovoltaics (PV), lumped series resistance, I–V curves, multijunction solar cells, photogenerated current imbalance
Faculty: E.T.S.I. Telecomunicación (UPM)
Department: Electrónica Física
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The segmental approach has been considered to analyze dark and light I-V curves. The photovoltaic (PV) dependence of the open-circuit voltage (Voc), the maximum power point voltage (Vm), the efficiency (?) on the photogenerated current (Jg), or on the sunlight concentration ratio (X), are analyzed, as well as other photovoltaic characteristics of multijunction solar cells. The characteristics being analyzed are split into monoexponential (linear in the semilogarithmic scale) portions, each of which is characterized by a definite value of the ideality factor A and preexponential current J0. The monoexponentiality ensures advantages, since at many steps of the analysis, one can use the analytical dependences instead of numerical methods. In this work, an experimental procedure for obtaining the necessary parameters has been proposed, and an analysis of GaInP/GaInAs/Ge triple-junction solar cell characteristics has been carried out. It has been shown that up to the sunlight concentration ratios, at which the efficiency maximum is achieved, the results of calculation of dark and light I-V curves by the segmental method fit well with the experimental data. An important consequence of this work is the feasibility of acquiring the resistanceless dark and light I-V curves, which can be used for obtaining the I-V curves characterizing the losses in the transport part of a solar cell.

More information

Item ID: 41087
DC Identifier: http://oa.upm.es/41087/
OAI Identifier: oai:oa.upm.es:41087
DOI: 10.1109/JPHOTOV.2015.2416006
Official URL: http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=7086276
Deposited by: Memoria Investigacion
Deposited on: 25 Jun 2016 11:13
Last Modified: 25 Jun 2016 11:13
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