| Texto completo | |
| Autor(es): |
Carvalho, Ramon Dadalto
;
Fernandes, Cristian Dias
;
Pereira, Marcelo Barbalho
;
Alves, Samantha Cardoso
;
Jardim, Pedro Lovato Gomes
;
Cava, Sergio da Silva
;
Ferrer, Mateus Meneghetti
;
Raubach, Cristiane Wienke
;
Longo, Elson
;
Moreira, Mario Lucio
Número total de Autores: 10
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Applied Surface Science; v. 702, p. 9-pg., 2025-09-01. |
| Resumo | |
This study developed a multifunctional aluminum oxide (Al2O3) film combining anti-reflective and super-hydrophobic properties for enhanced photovoltaic (PV) performance in outdoor applications. The film was created on glass substrates using a sol-gel, dip coating, and controlled etching process, resulting in a porous surface with grass-like nanostructures. After 512 s of etching, the film achieved a roughness of 23.63 nm and a refractive index of 1.14 at 550 nm. It demonstrated excellent broadband anti-reflection, with 96.86% average transmittance and 3.07% reflectance across the 350-1500 nm spectrum, peaking at 99.30% transmittance at 480 nm. The film maintained over 90% transmittance at angles up to 45 degrees, providing omnidirectional functionality crucial for solar panels. Its superhydrophobicity (162.3 degrees water contact angle and hysteresis 7.5 degrees) ensures self-cleaning. When applied as a solar cell cover glass coating, the film enhanced short-circuit current density and power conversion efficiency. A 19.19% efficiency increase was observed at a 60 degrees incidence angle, demonstrating the film's potential for significant PV performance improvement. (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 |
| Processo FAPESP: | 24/10185-2 - Desenvolvimento e aplicação de filmes antirreflexivos e autolimpantes para o incremento da eficiência da célula solar. |
| Beneficiário: | Ramon Dadalto Carvalho |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |