The Influence Of Non-Fullerene Acceptor (Itic) Addition Into A Wide-Band Gap Donor (Pbdb-T) On The Organic Solar Cells Performance

Título do Trabalho

THE INFLUENCE OF NON-FULLERENE ACCEPTOR (ITIC) ADDITION INTO A WIDE-BAND GAP DONOR (PBDB-T) ON THE ORGANIC SOLAR CELLS PERFORMANCE

Autores

Mariane Oide
Loren M. Pastrana
José Enrique Eirez Izquierdo
Gerson Santos
Marco Roberto Cavallari
Fernando Josepetti Fonseca
Desconhecido7559

Modalidade

Apresentação - pôster (Clique aqui para saber os detalhes para submissão)

Área temática

Dispositivos eletrônicos e ópticos (OLED/OFET/OPVs/etc)

Data de Publicação

20/05/2022

País da Publicação

Brasil

Idioma da Publicação

Inglês

Página do Trabalho

https://www.even3.com.br/anais/workshopineo2022/472709-the-influence-of-non-fullerene-acceptor-(itic)-addition-into-a-wide-band-gap-donor-(pbdb-t)-on-the-organic-solar-

ISBN

Palavras-Chave

Organic solar cells, non-fullerene acceptor, PBDB-T, ITIC

Resumo

The bulk heterojunction (BHJ) structure, typically formed by the combination of an electron donor and an electron acceptor compounds, has been widely applied to fabricate high performance organic solar cells (OSCs). Combined with the rapid progress of non-fullerene acceptors (NFAs) materials, it has enabled the development of increasingly efficient OSCs, mainly, by the introduction of 3,9-bis(2-methylene-(3-(1,1-dicyanomethylene)-indanone))-5,5,11,11-tetrakis(4-hexylphenyl)-dithieno[2,3-d:2’,3’-d’]-s-indaceno[1,2-b:5,6-b’]dithiophene (ITIC). ITIC is a small-molecule electron acceptor based on A-D-A (acceptor-donor-acceptor) structure with a narrow bandgap (Eg = 1.59 eV). In addition, it exhibits a strong light absorption from 500 to 780 nm [1]. The main advantage of these materials is the greater synthesis flexibility compared to fullerene-based acceptors. Chemical modifications such as side chain engineering and functional group addition into their structure allow the modulation of the HOMO (highest occupied molecular orbital) and LUMO (lowest unoccupied molecular orbital) energy levels. Consequently, a larger variety of donor materials can be combined with them to achieve higher power conversion efficiencies (PCE), including medium and wide bandgap (Eg) donors such as poly[(2,6-(4,8-bis(5-(2-ethylhexyl)thiophen-2-yl)-benzo[1,2-b:4,5-b’]dithiophene))-alt-(5,5-(1’,3’-di-2-thienyl-5’,7’-bis(2-ethylhexyl)benzo[1’,2’-c:4’,5’-c’]dithiophene-4,8-dione)] (PBDB-T) [1]. PBDB-T (Eg = 1.80 eV) is a polymeric semiconductor widely used with NFA, since it generally provides high-performance OSCs. Additionally, when blended with ITIC, PCE of approximately 11% can be achieved [2,3]. In this context, PBDB-T:ITIC (1:1, 1:1.3 and 1:1.5 weight ratio) was dissolved in 1,2-dichlorobenzene and spin-coated at 700 rpm/1 min followed by drying at 150°C/10 min to form a thin film in a nitrogen-filled glovebox. All OSCs were manufactured using a conventional structure consisted of indium tin oxide (ITO)/poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS)/PBDB-T:ITIC/aluminum (Al). PEDOT:PSS was deposited via spin-coating at 3000 rpm/1 min and dried at 110°C/10 min under ambient conditions. Al electrodes were deposited by thermal vacuum evaporation through a shadow mask. The devices and their respective active layer films were electrically and optically characterized. As the proportion of ITIC enhances, the average PCE also increases. The values obtained were 0.16%, 0.94% and 1.03% for 1:1; 1:1.3 and 1:1.5 (weight ratio), respectively. Acknowledgement: The authors gratefully acknowledge the financial support provided by FAPESP/SABESP (Project 13/50440-7) and CNPq. References: [1] YANG, Y. et al. Side-Chain Isomerization on an n-type Organic Semiconductor ITIC Acceptor Makes 11.77% High Efficiency Polymer Solar Cells. Journal of the American Chemical Society, v. 138, n. 45, p. 15011–15018, 2016. [2] UPAMA, M. B. et al. Photo-degradation of high efficiency fullerene-free polymer solar cells. Nanoscale, v. 9, n. 47, p. 18788–18797, 2017. [3] ZHENG, Y. et al. A highly efficient polymer non-fullerene organic solar cell enhanced by introducing a small molecule as a crystallizing-agent. Materials Today, v. 21, n. 1, p. 79–87, 2018.

Título do Evento: Workshop INEO 2022
Título dos Anais do Evento: Anais do Workshop INEO 2022
Nome da Editora: Even3
Meio de Divulgação: Meio Digital

Como citar

OIDE, Mariane et al.. THE INFLUENCE OF NON-FULLERENE ACCEPTOR (ITIC) ADDITION INTO A WIDE-BAND GAP DONOR (PBDB-T) ON THE ORGANIC SOLAR CELLS PERFORMANCE.. In: Anais do 16° Workshop do Instituto Nacional de Eletrônica Orgânica. Anais...São Carlos(SP) IFSC, 2022. Disponível em: https//www.even3.com.br/anais/workshopINEO2022/472709-THE-INFLUENCE-OF-NON-FULLERENE-ACCEPTOR-(ITIC)-ADDITION-INTO-A-WIDE-BAND-GAP-DONOR-(PBDB-T)-ON-THE-ORGANIC-SOLAR-. Acesso em: 01/01/2026