INVESTIGATING THE EFFECTS OF (3-GLYCIDYLOXYPROPYL)TRIMETHOXYSILANE (GOPS) ADDITION IN THE HOLE TRANSPORT LAYER OF SINGLE-JUNCTION ORGANIC SOLAR CELLS

João Vítor Lima de Oliveira; Gregório Faria

Título do Trabalho

Autores

João Vítor Lima de Oliveira
Gregório 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-2026/1458248-investigating-the-effects-of-(3-glycidyloxypropyl)trimethoxysilane-(gops)-addition-in-the-hole-transport-layer-o

ISBN

978-65-272-2467-9

Palavras-Chave

Organic solar cells, PEDOT:PSS, GOPS crosslinking, humidity stability, hole transport layer

Resumo

Organic solar cells (OSCs) have experienced significant progress in recent years, achieving power conversion efficiencies (PCEs) above 19% in single-junction devices and emerging as promising candidates for lightweight, flexible, and low-cost photovoltaic technologies. Despite these advances, their widespread commercialization is still limited by degradation mechanisms that compromise both efficiency and long-term operational stability. Among the various sources of instability, the hole transport layer (HTL) plays a crucial role in determining device durability and charge extraction efficiency. The most commonly employed HTL material, PEDOT:PSS, is intrinsically hygroscopic and readily absorbs moisture from the environment. Water uptake disrupts hydrogen bonding within the PSS chains, increases interchain distances, and reduces film conductivity, ultimately leading to poor charge transport and accelerated performance losses under humid conditions. In this work, we investigate the incorporation of (3-glycidyloxypropyl)trimethoxysilane (GOPS), a silane-based crosslinking agent known to improve chemical robustness and water resistance in polymer thin films, into PEDOT:PSS layers used in OSCs. The main objective is to mitigate humidity-induced degradation while preserving or enhancing the electrical properties of the HTL. Different GOPS concentrations are systematically introduced into the PEDOT:PSS solution to evaluate the balance between enhanced stability and possible conductivity reductions caused by excessive crosslinking. Device performance is assessed through detailed photovoltaic characterization, including measurements of open-circuit voltage (Voc), short-circuit current density (Jsc), fill factor (FF), and overall PCE. Morphological and nanoscale structural changes induced by GOPS incorporation are analyzed using atomic force microscopy (AFM) to establish correlations between surface features and charge transport behavior. In addition, device reliability is evaluated through accelerated aging tests conducted according to the ISOS protocol under controlled indoor humidity conditions, enabling a quantitative comparison of stability improvements. Overall, this study provides a comprehensive understanding of how GOPS-modified PEDOT:PSS influences the electrical, morphological, and stability properties of OSCs, contributing to the development of more robust and moisture-resistant HTLs and supporting the advancement of durable, high-efficiency organic photovoltaic technologies for practical applications. The authors acknowledge financial support from FAPESP (São Paulo Research Foundation, grant 2025/27044-5) and CNPq (National Council for Scientific and Technological Development, grant 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

OLIVEIRA, João Vítor Lima de; FARIA, Gregório. INVESTIGATING THE EFFECTS OF (3-GLYCIDYLOXYPROPYL)TRIMETHOXYSILANE (GOPS) ADDITION IN THE HOLE TRANSPORT LAYER OF SINGLE-JUNCTION 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-2026/1458248-INVESTIGATING-THE-EFFECTS-OF-(3-GLYCIDYLOXYPROPYL)TRIMETHOXYSILANE-(GOPS)-ADDITION-IN-THE-HOLE-TRANSPORT-LAYER-O. Acesso em: 10/08/2026