Publications

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2024
Akalin, S. A., T. Mateus, G. Ribeiro, J. Deuermeier, T. Calmeiro, H. Águas, R. Martins, A. T. Vicente, MJ Mendes, and U. D. Yilmazer Menda. "Ultra-flexible, high-performing NAN transparent electrodes for bendable optoelectronic applications." Journal of Materials Science: Materials in Electronics. 35 (2024). AbstractWebsite
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2023
Pinheiro, A., A. Ruivo, J. Rocha, M. Ferro, JV Pinto, J. Deuermeier, T. Mateus, A. Santa, MJ Mendes, R. Martins, S. Gago, C. A. T. Laia, and H. Águas. "Parylene-Sealed Perovskite Nanocrystals Down-Shifting Layer for Luminescent Spectral Matching in Thin Film Photovoltaics." Nanomaterials. 13 (2023). AbstractWebsite
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Menda, U. D., G. Ribeiro, J. Deuermeier, E. López, D. Nunes, S. Jana, I. Artacho, R. Martins, I. Mora-Seró, MJ Mendes, and I. Ramiro. "Thermal-Carrier-Escape Mitigation in a Quantum-Dot-In-Perovskite Intermediate Band Solar Cell via Bandgap Engineering." ACS Photonics. 10 (2023): 3647-3655. AbstractWebsite
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2022
Haque, Sirazul, Miguel Alexandre, Clemens Baretzky, Daniele Rossi, Francesca De Rossi, António T. Vicente, Francesca Brunetti, Hugo Águas, Rute A. S. Ferreira, Elvira Fortunato, Matthias Auf der Maur, Uli Würfel, Rodrigo Martins, and Manuel J. Mendes. "Photonic-Structured Perovskite Solar Cells: Detailed Optoelectronic Analysis." ACS Photonics. 9 (2022): 2408-2421. AbstractWebsite
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2020
Centeno, P., M. F. Alexandre, M. Chapa, JV Pinto, J. Deuermeier, T. Mateus, E. Fortunato, R. Martins, H. Águas, and MJ Mendes. "Self-Cleaned Photonic-Enhanced Solar Cells with Nanostructured Parylene-C." Advanced Materials Interfaces. 7 (2020). AbstractWebsite
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2018
{Ben Wannes}, H., Benabderrahmane R. Zaghouani, R. Ouertani, A. Araújo, MJ Mendes, H. Aguas, E. Fortunato, R. Martins, and W. Dimassi {Study of the stabilizer influence on the structural and optical properties of sol-gel spin coated zinc oxide films}. Vol. 74. Materials Science in Semiconductor Processing, 74. Elsevier Ltd, 2018. Abstract

In this work, we highlight the influence of three different sol stabilizers, namely diethanolamine (DEA), Ammonium Hydroxide (NH4OH), and Nitric Acid (HNO3), on the optical and structural properties of spin-coated zinc oxide (ZnO) thin films. The XRD patterns related to all films exhibit a hexagonal crystal structure with a preferential orientation along the (0 0 2) direction. However an additional {\textless}100{\textgreater} peak arises when the films are prepared with DEA and NH4OH showing a better crystallinity than that displayed by HNO3-prepared films. The elaborated films show a high transparency reaching 80{%} for DEA-prepared films. The analysis of the transmittance and the reflectance measurements confirms a direct band-to-band transition. Depending on the sol stabilizer, the optical band gap energy is varying from 3.16 to 3.22 eV. The relatively wide band-gap of DEA-prepared ZnO films is correlated to their high crystallinity. Room temperature photoluminescence spectra indicate strong UV emission at around 377 nm originated from nearby band-edge transitions. Yet, the use of DEA as a stabilizer leads to a net intensity increase of the blue peak emission.

2011
Mendes, MJ, I. Tobías, A. Martí, and A. Luque. "{Near-field light focusing by wavelenght-sized dielectric spheroids for photovoltaic applications}." Optical Nanostructures and Advanced Materials for Photovoltaics - Concepts of Light Trapping and Photon Transport. Ed. Technical O. S. A. Digest. Vol. Renewable. Austin, Texas (USA): Optical Society of America, 2011. JThC. Abstract
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