Limiting Efficiency of Heterojunction Solar Cells

Martí Vega, Antonio (2019). Limiting Efficiency of Heterojunction Solar Cells. "IEEE Journal of Photovoltaics" ; pp. 1-6. ISSN 2156-3381. https://doi.org/10.1109/JPHOTOV.2019.2932626.

Description

Title: Limiting Efficiency of Heterojunction Solar Cells
Author/s:
  • Martí Vega, Antonio
Item Type: Article
Título de Revista/Publicación: IEEE Journal of Photovoltaics
Date: November 2019
ISSN: 2156-3381
Subjects:
Freetext Keywords: Heterojunctions, limiting efficiency, photovoltaics, solar cells.
Faculty: Instituto de Energía Solar (IES) (UPM)
Department: Electrónica Física, Ingeniería Eléctrica y Física Aplicada
UPM's Research Group: Silicio y Nuevos Conceptos para Células Solares
Creative Commons Licenses: None

Full text

[img] PDF - Users in campus UPM only until 31 November 2021 - Requires a PDF viewer, such as GSview, Xpdf or Adobe Acrobat Reader
Download (2MB)

Abstract

A heterojunction solar cell consists of a p-n junction between a high-bandgap and a low-bandgap semiconductor. As the cell is made up of two different semiconductors, the fundamental question that arises is whether the limiting efficiency of the heterojunction solar cell is determined by the low-bandgap semiconductor, the high-bandgap semiconductor, some value inbetween or, perhaps, even some other value exceeding the limiting efficiency of single gap solar cells. In this respect, in this paper, we demonstrate that the limiting efficiency lies in-between, without the absolute limiting efficiency of single gap solar cells being exceeded. However, in spite of this result, we find that the open-circuit voltage of heterojunction solar cells can exceed the bandgap (divided by the electron charge) of the low-bandgap semiconductor, something that is not possible in single gap solar cells.

Funding Projects

TypeCodeAcronymLeaderTitle
Government of SpainTEC2017-92301- EXP2GAPSUnspecifiedUnspecified
Madrid Regional GovernmentP2018/EMT-4308MADRID-PV2-CMUnspecifiedUnspecified
Horizon 2020787289GRECOUnspecifiedUnspecified

More information

Item ID: 57077
DC Identifier: http://oa.upm.es/57077/
OAI Identifier: oai:oa.upm.es:57077
DOI: 10.1109/JPHOTOV.2019.2932626
Deposited by: Prof. Antonio Martí Vega
Deposited on: 28 Oct 2019 06:44
Last Modified: 28 Oct 2019 06:44
  • Logo InvestigaM (UPM)
  • Logo GEOUP4
  • Logo Open Access
  • Open Access
  • Logo Sherpa/Romeo
    Check whether the anglo-saxon journal in which you have published an article allows you to also publish it under open access.
  • Logo Dulcinea
    Check whether the spanish journal in which you have published an article allows you to also publish it under open access.
  • Logo de Recolecta
  • Logo del Observatorio I+D+i UPM
  • Logo de OpenCourseWare UPM