Photoconversion Behavior of a ZnO/Graphite Solar Cell
Abstract This work assembled dye solar cells by replacing platinum with graphite on indium tin oxide (ITO). First, the device was tested only on the ITO; afterward, graphite was placed on the ITO and evaluated as a counter electrode in the cell. The results showed that the presence of graphite increased the incident photocurrent conversion (IPCE) of the cell. The electrode used was a combination of zinc oxide with 4% bismuth, and characterization of the film had high reflectance in the visible region, a thickness of around 1.47 μm, and a crystallite size of around 38.5 nm. The addition of graphite as a counter electrode increased the cell efficiency by 10 times, driven by an increase in current density from 0.02 to 1.2 mA/cm and in IPCE from 0.04 to 2.26%.
Authors
- Francisco Nivaldo Aguiar Freire (ORCID: https://orcid.org/0000-0001-5449-2635)
- Francisco Marcone Lima (ORCID: https://orcid.org/0000-0002-1898-9350)
- Vanja Fontenele Nunes (ORCID: https://orcid.org/0000-0003-2458-5616)
- Carla Freitas de Andrade (ORCID: https://orcid.org/0000-0003-1403-1994)
- A. S. B. Sombra (ORCID: https://orcid.org/0000-0001-6461-6793)
Institutions
- Instituto Tecnológico de Aeronáutica (BR)
- Universidade Federal do Ceará (BR)
Publication Details
- Journal
- ACS Omega
- Published
- 2026-11-06
- DOI
- https://doi.org/10.1021/acsomega.6c06228
- Primary Topic
- TiO2 Photocatalysis and Solar Cells
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
- Ministério da Ciência, Tecnologia e Inovação
- Conselho Nacional de Desenvolvimento Científico e Tecnológico
- Sistema de Laboratórios em Nanotecnologias, Universidade Federal de Viçosa