INFLUENCE OF METALLIC NANOPARTICLES AND SMALL MOLECULES ON THE PERFORMANCE OF ORGANIC SOLAR CELLS

Mateus Mussunda Landa; Jeferson Ferreira de Deus; Roberto Faria

Todos os Trabalhos

Trabalho

Título do Trabalho

INFLUENCE OF METALLIC NANOPARTICLES AND SMALL MOLECULES ON THE PERFORMANCE OF ORGANIC SOLAR CELLS

Autores

Mateus Mussunda Landa
Jeferson Ferreira de Deus
Roberto Faria

Modalidade

Pôster - resumo

Área temática

Dispositivos optoeletrônicos

Data de Publicação

27/05/2026

País da Publicação

Brasil

Idioma da Publicação

pt-BR

Página do Trabalho

https://www.even3.com.br/anais/workshop-do-ineo-2026/1462367-influence-of-metallic-nanoparticles-and-small-molecules-on-the-performance-of-organic-solar-cells

ISBN

978-65-272-2467-9

Palavras-Chave

Organic solar cells, Metallic nanoparticles, Hole transport layer, Efficiency

Resumo

The search for clean and renewable energy sources has positioned photovoltaic technologies as essential for the future global energy scenario. Among emerging alternatives, Organic Solar Cells (OSCs) stand out due to their lightweight nature, mechanical flexibility, and potential for low-cost fabrication. Significant progress in OSC efficiency has been achieved through Bulk Heterojunction (BHJ) architectures employing Non-Fullerene Acceptors (NFAs), particularly the PM6:Y6 system, which represents one of the most efficient and extensively studied donor–acceptor blends. Despite these advances, device performance is still limited by losses arising from the competition between charge extraction and bimolecular recombination, a process that can be quantitatively described by analytical models based on charge-transport figures of merit, including second-order recombination effects. This work investigates the influence of metallic nanoparticles (NPs) and small-molecule interlayers on the performance of PM6:Y6-based BHJ-OSCs, aiming to improve photovoltaic parameters through interface engineering of the device multilayers. Different Hole Transport Layers (HTLs) were evaluated, comparing the conventional polymeric PEDOT:PSS with the small molecule Br-2PACz. Each HTL was combined with interlayers containing gold nanoparticles synthesized via Pulsed Laser Ablation in Liquid (PLAL), as an alternative strategy to previously reported optimized nanoparticle-modified PEDOT:PSS systems (Gavim et al., 2025). Steady-state current density–voltage (J–V) characterization demonstrated that the Br-2PACz/Au NP configuration provides superior photovoltaic performance compared to PEDOT:PSS-based devices. Improvements were observed mainly in fill factor (FF) and power conversion efficiency (PCE), indicating enhanced charge extraction and reduced recombination losses. To elucidate the underlying mechanisms, charge carrier dynamics were analyzed through Transient Photocurrent (TPC), Transient Photovoltage (TPV), and Photo-CELIV measurements. By correlating these experimental techniques with an analytical photocurrent model, we verified that nanoparticle incorporation increases carrier mobility and improves charge balance. The optimization is quantitatively supported by a significant reduction in the charge-transport figure-of-merit parameter ?o, which is directly correlated with FF and PCE. The results confirm that the synergistic action of Br-2PACz and Au nanoparticles mitigates recombination losses and facilitates hole extraction at the interface. These findings validate the multilayer interface-engineering strategy as an effective approach to enhancing charge transport and overall efficiency in organic solar cells. Acknowledgments: INEO (FAPESP - processo nº 2025/27044-5 e CNPq - processo: 408449/2024-1).

Título do Evento: Workshop do INEO 2026
Cidade do Evento: Nazaré Paulista
Título dos Anais do Evento: Anais do Workshop do INEO 2026
Nome da Editora: Even3
Meio de Divulgação: Meio Digital

Como citar

LANDA, Mateus Mussunda; DEUS, Jeferson Ferreira de; FARIA, Roberto. INFLUENCE OF METALLIC NANOPARTICLES AND SMALL MOLECULES ON THE PERFORMANCE OF ORGANIC SOLAR CELLS.. In: Anais do Workshop do INEO 2026. Anais...Nazaré Paulista(SP) Hotel Estância Atibainha, 2026. Disponível em: https//www.even3.com.br/anais/workshop-do-ineo-2026/1462367-INFLUENCE-OF-METALLIC-NANOPARTICLES-AND-SMALL-MOLECULES-ON-THE-PERFORMANCE-OF-ORGANIC-SOLAR-CELLS. Acesso em: 10/08/2026