ELECTROCHEMICAL SYNTHESIS OF PANI WITH DIFFERENT DOPANTS FOR APPLICATION AS A HOLE TRANSPORT LAYER IN PEROVSKITE PHOTOVOLTAIC DEVICES

Júlio Goulart dos Santos (DR); ROMILDO J. RAMOS; Luiz F. R. Pereira; José Carlos Germino; Eralci Moreira Terézio

Título do Trabalho

Autores

Júlio Goulart dos Santos (DR)
ROMILDO J. RAMOS
Luiz F. R. Pereira
José Carlos Germino
Eralci Moreira Terézio

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-2026/1462494-electrochemical-synthesis-of-pani-with-different-dopants-for-application-as-a-hole-transport-layer-in-perovskite

ISBN

978-65-272-2467-9

Palavras-Chave

Polyaniline; Perovskite Solar Cells; Electrochemical Synthesis.

Resumo

Polyaniline (PAni) is a p-type semiconducting polymer that can be utilized as a hole transport layer (HTL) in photovoltaic devices [1]. Electrochemical synthesis of PAni allows for direct deposition onto the electrode, forming a uniform thin film. By using different dopants, the conductive and morphological properties of the film can be tailored [2]. In this work, photovoltaic devices were developed following the architecture ITO/PAni/PEAI:MAPI:salophen/PCBM/BCP/Ag, employing various electrochemical synthesis routes for PAni. The PAni film was synthesized via cyclic voltammetry on ITO with a potential scan from -0.1 V to 0.9 V. A three-electrode system was used with a solution of 0.1 M aniline and 0.5 M dopant in distilled water. First, PAni samples doped with different acids (HCl, H2SO4, and H3PO4) were prepared to determine the optimal dopant. Variations in scan cycles (1, 2, 3, and 5 cycles) were also performed. The active layer and electron transport layers were deposited by spin-coating. For the active layer, a PEAI (phenethylammonium iodide) film was deposited, followed by a MAPI (methylammonium lead iodide) film with the addition of salophen in the anti-solvent solution. For the electron transport layers, a PCBM ([6,6]-phenyl-C61-butyric acid methyl ester) film was deposited from a 20 mg/ml solution in chlorobenzene, and a BCP (bathocuproine) film from a 0.5 mg/ml solution in isopropanol. To complete the device, a silver metallic film was evaporated. The results showed that devices using H3PO4 as a dopant achieved the best efficiency. The highest Power Conversion Efficiency (PCE) and Fill Factor (FF) values were observed in samples with PAni synthesized between 1 and 3 cycles. The 1-cycle sample reached a PCE of 11.5% and an FF of 67%, while the 3-cycle sample reached a PCE of 10.1% and an FF of 64.8%. Finally, this study identified the optimal conditions for the electrochemical synthesis of PAni for HTL applications; subsequent electrical and morphological measurements of the PAni thin film will be conducted for further analysis and synthesis refinement. ACKNOWLEDGMENTS: CAPES, CNPq, FAPEMAT, and INEO (FAPESP - processo nº 2025/27044-5 e CNPq - processo: 408449/2024-1). REFERENCES: [1] Mei, Yantao, et al. "Perovskite solar cells with polyaniline hole transport layers surpassing a 20% power conversion efficiency." Chemistry of Materials 33.12 (2021): 4679-4687. [2] Bhadra, Sambhu, Nikhil K. Singha, and Dipak Khastgir. "Electrochemical synthesis of polyaniline and its comparison with chemically synthesized polyaniline." Journal of applied polymer science 104.3 (2007): 1900-1904.

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

(DR), Júlio Goulart dos Santos et al.. ELECTROCHEMICAL SYNTHESIS OF PANI WITH DIFFERENT DOPANTS FOR APPLICATION AS A HOLE TRANSPORT LAYER IN PEROVSKITE PHOTOVOLTAIC DEVICES.. 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-2026/1462494-ELECTROCHEMICAL-SYNTHESIS-OF-PANI-WITH-DIFFERENT-DOPANTS-FOR-APPLICATION-AS-A-HOLE-TRANSPORT-LAYER-IN-PEROVSKITE. Acesso em: 10/08/2026