Vertical-Tunnel-Junction (VTJ) Solar Cell for Ultra-High Light Concentrations (>2000 Suns)

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2019_edl_fernandez_vertical.pdf (491.69 KB)
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URI: http://hdl.handle.net/10347/24653
ISSN: 0741-3106
E-ISSN: 1558-0563
DOI: 10.1109/LED.2018.2880240

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2019

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IEEE
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Abstract

A novel architecture of cell structure tailored to ultra-high (>2000 suns) concentration ratios is proposed. The basic solar cell consists of two p-n junctions connected in series by a highly doped tunnel diode with the metallic contacts located laterally. The tunneling connection allows using direct band-gap semiconductor compounds aiming to optimize the absorption of the spectrum. The performance of the novel architecture is investigated up to ultra-high concentration using TCAD software. Simulations show its viability for developing a new generation of solar cells to increase the potential in terms of efficiency and cost reduction of ultra-high concentrator systems. The solar cell does not show any degradation with concentration and efficiency as high as 28.4% at 15000 suns has been obtained for a preliminary design

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Vertical solar cells| Concentrator photovoltaics| Gallium arsenide (GaAs)| Tunnel diode| Series resistance

Bibliographic citation

Eduardo F. Fernández, Natalia Seoane, Florencia Almonacid and Antonio J. García-Loureiro (2019) Vertical-Tunnel-Junction (VTJ) Solar Cell for Ultra-High Light Concentrations (>2000 Suns). IEEE Electron Device Letters, 40 (1), 44-47. Doi: 10.1109/LED.2018.2880240

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The work of E. F. Fernández and F. Almonacid was supported by the Spanish Economy Ministry and FEDER funds under Project ENE2016-78251-R. The work of N. Seoane and A. J. García-Loureiro was supported in part by the Spanish Ministry of Economy and Competitiveness and FEDER funds under Grants TEC2014-59402-JIN and TIN2016-76373-P and in part by the Xunta de Galicia and FEDER funds under Grant GRC 2014/008

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© 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works

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