The Nanostructured Materials for Optoelectronics and Energy Harvesting (NANOPTO) group focuses on the production and characterization of advanced semiconducting structures with the main objective of understanding their fundamental behavior in order to tailor and improve their functionalities and empower different applications in the areas of optoelectronics, energy management, and sensing devices.
The group is divided into four different research activities: Optoelectronics of group-IV semiconductor nanostructures, Organic-Inorganic Thermoelectrics, Photonic Architectures for Light Management and Organic Solar Cells.
The group would like to highlight three main achievements:
i) Carbon based thermoelectrics have attracted special attention as they do not contain toxic or scarce elements, and moreover can be solution processed at low temperatures, thus increasing sustainability, simplifying fabrication and reducing cost. The group went one step farther by moving from manufacturing to farming thermoelectric films which exhibit thermoelectric properties similar to the pristine materials while saving more than 90 % of the expensive carbon nanotubes. In addition, these films are thermally stable beyond 250 °C, amenable to conformal wrapping around randomly shaped heat sources, and importantly, can be enzymatically decomposed to reclaim the carbon nanotubes. A first step towards a new energy paradigm: do-it-yourself energy harvesters.
ii) A wide number of perovskite oxides have ferroelectric behavior. In organic-inorganic perovskite thin films, however, the existence of ferroelectricity has been under debate over the past few years. The group aimed at contributing to the understanding of this topic by extending the range of measurements beyond what is conventionally carried out. In particular, three force-microscopy techniques applied to two perovskite materials were employed, prepared with control of film thickness and grain sizes that enabled the evaluation of morphological differences. Based on experimental data and by comparing two well-known ferroelectric materials, it was concluded that lead halide perovskites are ferroelectricity-free.
iii) Plasmonic supercrystals and periodically structured arrays comprise a class of materials with unique optical properties that result from the interplay of plasmon resonances, as well as near- and far-field coupling. Assessing the efficacy of such square arrays for surface-enhanced Raman scattering spectroscopy, the signal was boosted by more than an order of magnitude, thereby enabling sensitive detection of analytes, such as the bacterial quorum sensing molecule pyocyanin, even in complex biological media.
Farming thermoelectric paper
D. Abol-Fotouh, B. Dörling, O. Zapata-Arteaga, X. Rodríguez-Martínez, A. Gómez, J. S. Reparaz, A. Laromaine, A. Roig and M. Campoy-Quiles
Energy and Enviromental Science, 12, 716-726, 2019
Ferroelectricity-free lead halide perovskites
A. Gómez, Q. Wang, A. R. Goñi, M. Campoy-Quiles and Antonio Abate
Energy and Enviromental Science, 12, 2537-2547, 2019
Solvent-assisted self-assembly of gold nanorods into hierarchically organized plasmonic mesostructures
C. Hanske, E.H. Hill, D. Vila-Liarte, G. González-Rubio, C. Matricardi, A. Mihi and L.M. Liz-Marzán
ACS Applied Material & Interfaces 11, 12, 11763-11771, 2019
Solar harvesting: a unique opportunity for organic thermoelectrics?
J. P. Jurado, B. Dörling, O. Zapata‐Arteaga, A. Roig, A. Mihi and M. Campoy‐Quiles
Advanced Energy Materials, 9, 45, 1902385, 2019
Nanostructured back reflectors for efficient colloidal quantum-dot infrared optoelectronics
S. Baek, P. Molet, M. Choi, M. Biondi, O. Ouellette, J. Fan, S. Hoogland, F.P. García-de-Arquer, A. Mihi and E. H. Sargent
Advanced Materials, 31, 33, 11901745, 2019. DOI: 10.1002/adma.20190174
Energy transfer and interference by collective electromagnetic coupling
M. Gómez-Castaño, A. Redondo-Cubero, L. Buisson, J.L. Pau, A. Mihi, S. Ravaine, R.A.L. Vallée, A. Nitzan and M. Sukharev
Nano Letters, 19, 5790-5795, 2019
Blade coated P3HT:non-fullerene acceptor solar cells: a high-throughput parameter study with a focus on up-scalability
E. Pascual-San-José, X. Rodríguez-Martínez, R. Adel-Abdelaleim, M. Stella, E. Martínez-Ferrero and M. Campoy-Quiles
Journal of Materials Chemistry A, 7, 20369-20382, 2019
Narrow linewidth quantum emitters in electron-beam shaped polymer
C. Ciancico, K. Schädler, S. Pazzagli, M. Colautti, P. Lombardi, J. Osmond, C. Dore, A. Mihi, A. Ovvyan, W. HP Pernice, E. Berretti, A. Lavacchi, C. Toninelli, F. Koppens and A. Reserbat-Plantey
ACS Photonics,, 2019.
Assembly-induced bright-light emission from solution-processed platinum(II) inorganic polymers
A. Perevedentsev, F. L. Bargardi, A. Sánchez-Ferrer, N. J. Cheetham, A. Sousaraei, S. Busato, J. Gierschner, B. Milián-Medina, R. Mezzenga, R. Wannemacher, J. Cabanillas-Gonzalez, M. Campoy-Quiles and W. R. Caseri
ACS Omega, 4, 6, 10192-10204, 2019
Equal footing of thermal expansion and electron-phonon interaction in the temperature dependence of lead halide perovskite band gaps
A. Francisco-López, B. Charles, O. J. Weber, M. I. Alonso, M. Garriga, M. Campoy-Quiles, M. T. Weller and A. R. Goñi
Journal Physical Chemical Letters, 10, 11, 2971-2977, 2019
On the impact of the stress situation on the optical properties of WSe2monolayers under high pressure
A. Francisco-López, B. Han, D. Lagarde, X. Marie, B. Urbaszek, C. Robert and A. R. Goñi
Papers in Physics, 11, 110005, 2019
Spectroscopic ellipsometry study of FAxMA1−xPbI3 hybrid perovskite single crystals
M. I. Alonso, B. Charles, A. Francisco-López, M.Garriga, M. T Weller, A. R. Goñi
Journal of Vacuum Science & Technology B, 37, 062901, 2019
Tunable index metamaterials made by bottom-up approaches
M. Gómez-Castaño, H. Zheng, J.L. Garcia-Pomar, R. Vallée, A. Mihi and S. Ravaine
Nanoscale Advances, 1, 1070-1076, 2019
Will organic thermoelectrics get hot?
Philosophical Transaction of the Royal Society A, 377, 20180352, 2019.
Thermoelectrics: From history, a window to the future
D. Beretta, N. Neophytou, J. M. Hodges, M.G. Kanatzidis, D. Narducci, M. Martin- González, M. Beekman, B. Balke, G. Cerretti, W. Tremel, A. Zevalkink, A.I. Hofmann, C. Müller, B. Dörling, M. Campoy-Quiles and M. Caironi
Materials Science & Engineering R, 138, 210-255, 2019
Band gap tuning of solution-processed ferroelectric perovskite BiFe1–xCoxO3 Thin Films
P. Machado, M. Scigaj, J. Gazquez, E. Rueda, A. Sánchez-Díaz, I. Fina, M. Gibert-Roca, T. Puig, X. Obradors, M. Campoy-Quiles and M. Coll
Chemistry of Materials, 31 (3), 947–954, 2019
Geometric frustration in ordered lattices of plasmonic nanoelements
A. Conde-Rubio, A. Fraile-Rodríguez, A. Espinha, A. Mihi, F. Pérez-Murano, X. Batlle and A. Labarta
Scientific Reports, 9, 3529, 2019