Photophysical insights into TFHA-OP: Optimizing Optical Performance Through Solvent and Film Thickness Control
Küçük Resim Yok
Tarih
2025
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Conjugated organic semiconductors with donor-it-acceptor (D-it-A) structures are pivotal for optoelectronic applications. This study investigates the optical properties of 2-(4-trifluoromethylphenyl)-3-(4-hydroxyphenyl) acrylonitrile (TFHA-OP), focusing on solvent and film thickness effects.UV-Vis spectroscopy shows that DMSO reduces the optical band gap t o 3.107 eV, compared to acetone, while increasing film thickness further lowers the band gap to 2.965 eV at 28.7 mu m, alongside an enhanced refractive index. TD-DFT and HOMO-LUMO analysis support these findings, confirming significant solvent and thickness dependence. Importantly, this study evaluates the nonlinear optical (NLO) properties in solution for the first time, revealing that DMSO significantly boosts beta tot by 2.7-fold. These findings underscore TFHA-OP's strong light-matter interaction in thin films, positioning it as a promising candidate for efficient, low-cost, and flexible optoelectronic devices, such as photovoltaics and sensors.
Açıklama
Anahtar Kelimeler
Organic Optoelectronics, Optical Properties, Solvent Effects, Film Thickness Effects, Nonlinear Optics (Nlo), Homo-Lumo
Kaynak
Physica B-Condensed Matter
WoS Q Değeri
Q2
Scopus Q Değeri
Q2
Cilt
714
