Contributions to Optical Properties and Efficiencies of Methyl-ammonium Lead, Tin and Germanium Iodide Perovskites

Tablero Crespo, César (2020). Contributions to Optical Properties and Efficiencies of Methyl-ammonium Lead, Tin and Germanium Iodide Perovskites. "The Journal of Physical Chemistry C", v. 124 (n. 23); pp. 12305-12310. ISSN 1932-7447. https://doi.org/10.1021/acs.jpcc.0c02836.

Description

Title: Contributions to Optical Properties and Efficiencies of Methyl-ammonium Lead, Tin and Germanium Iodide Perovskites
Author/s:
  • Tablero Crespo, César
Item Type: Article
Título de Revista/Publicación: The Journal of Physical Chemistry C
Date: 2 June 2020
ISSN: 1932-7447
Volume: 124
Subjects:
Freetext Keywords: Ammonium iodide; Energy gap; Germanium compounds; Optical properties; Perovskite; Positive ions; Solar power generation; Tin compounds; Absorption capacity; Absorption co-efficient; Cell thickness; First principles; Inorganic cations: Organic cations; Photovoltaics; Efficiency
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

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Abstract

Methyl-ammonium lead, tin, and germanium iodide perovskites are very interesting compounds for photovoltaics because they present a high absorption capacity for solar radiation. The microscopic contributions to the absorption coefficients and efficiencies of these perovskites are analyzed and quantified. To achieve this goal, both absorption coefficients and efficiencies are split as an exact many-species expansion. The absorption coefficients have been obtained from first-principles and have been used later to obtain efficiencies. Furthermore, by using the absorption coefficients instead of the band gap as the criterion for absorption, the efficiencies have also been quantified as a function of cell thickness. The contributions of inorganic cations are larger than those of organic cation atoms for low energies. As a consequence, as the thickness decreases, the contribution to the efficiency of inorganic cations and iodine increases, whereas that of the organic cation decreases. © 2020 American Chemical Society.

Funding Projects

TypeCodeAcronymLeaderTitle
Horizon 2020H2020-787289GRECOUnspecifiedUnspecified
Government of SpainRTI2018-096937-B-C21MULTIPLERUnspecifiedUnspecified

More information

Item ID: 65339
DC Identifier: http://oa.upm.es/65339/
OAI Identifier: oai:oa.upm.es:65339
DOI: 10.1021/acs.jpcc.0c02836
Official URL: https://pubs.acs.org/doi/pdf/10.1021/acs.jpcc.0c02836
Deposited by: Prof Cesar Tablero
Deposited on: 10 Nov 2020 11:29
Last Modified: 10 Nov 2020 11:29
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