Dr. Yara Ramírez Quiros Profile

Dr. Yara Ramírez Quiros

at Univ Autónoma Metropolitana

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Proceedings Article | 4 March 2019 Paper

Nonlinear optical properties of “star type” triazotriphenylmethane dyes

C. Enriquez Sánchez, V. Marañon-Ruiz, K. Esparza Ramirez, J. Castañeda Contreras, S. Afanador Delgado, Y. Ramírez Quiros, R. Chiu Zarate

Proceedings Volume 10902, 109021O (2019) https://doi.org/10.1117/12.2508110

KEYWORDS: Organic materials, Absorption, Refractive index, Stars, Nonlinear optics, Molecules, Optical properties

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Organic semiconductor dyes play a very important role in different criteria and fields of science, technology, and engineering for different applications, especially the absorption of visible light for solar cell devices, photo sensors, fluorescent, photoconductive devices. Basic fuchsine belongs to the triphenylmethane family. It is used on a large scale as a coloring agent for the staining of biological tissues, leather, and textile materials. The Z-scan technique is based on the principles of spatial distortion of the beam and offers simplicity, as well as a very high sensitivity for measuring both the nonlinear refractive index as well as the non-linear absorption coefficient. For the present work we propose the study of 6 star-type dyes derived from basic fushcine with azo groups added, by the Z-scan technique. A 1 × 10^-4 M dilution of each dye in methanol was prepared. Subsequently, the linear characterization was made with the help of the UV-vis technique and finally, the analysis was carried out in the Z-scan equipment. The dyes have a λmax between 500-570 nm, and with n₂ = -1.7 × 10^-9 to 6.63 × 10^-9 and β = 1.1 × 10^-3 to 6.3 × 10^-4. These results allow us to propose these dyes as good options for their incorporation into solar cells as well as optical absorbers.

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