An investigation of photovoltaic devices based onp-typeCu(2)Oandn-type gamma-WO(3)junction through an electrolyte solution containing a redox pair

Autor(es)

Resende, Andressa L. S. ^[1] ; Costa, Antonio G. R. ^[1] ; Lima, Aline E. B. ^[2] ; Costa, Maria J. S. ^[2] ; Longo, Elson ^[3] ; Cavalcante, Laecio S. ^[1] ; Santos, Reginaldo S. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Piaui, Dept Chem, PPGQ GERATEC, Joao Cabral 2231, POB 381, BR-64002150 Teresina, Piaui - Brazil

^[2] Univ Fed Piaui UFPI, Dept Chem, Teresina, Piaui - Brazil

^[3] Univ Fed Sao Carlos, CDMF UFSCAR, Sao Carlos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: INTERNATIONAL JOURNAL OF ENERGY RESEARCH; v. 45, n. 2, p. 2797-2809, FEB 2021.
• Citações Web of Science: 0

Resumo

In this article, we report a solar cell prepared withp-type cuprous oxide (Cu2O) andn-type gamma-tungsten oxide (gamma-WO3) films combined by an redox electrolyte in a configuration similar to that used in dye-sensitized solar cells. Cu2O films were prepared by the electrochemical method in three different pH conditions. X-ray diffraction patterns revealed that the Cu2O films presented a crystalline phase with cubic structure after deposition, whereas then-type gamma-WO(3)film was prepared by the drop-casting method. Optical analyses showed that both oxide films absorb visible light. After the photoelectrochemical characterization of the films, solar cells configured like a ``sandwich{''} (Cu2O/electrolyte/gamma-WO3) were assembled and investigated under irradiation of 100 mW cm(-2). The solar cell with I-/I3-redox pair showed better results than that prepared with polysulfide K2S/Sn2-electrolyte. For each solar cell, the investigated parameters were short-circuit current density, open-circuit voltage, fill factor, maximum power, and cell efficiency. The method proposed here can be considered new, promising, and simple for the preparation of solar cells with ap-njunction. (AU)

• Processo FAPESP: 13/07296-2 - CDMF - Centro de Desenvolvimento de Materiais Funcionais
• Beneficiário: Elson Longo da Silva
• Modalidade de apoio: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs