CNR ExploRA

Abstract in atti di convegno, 2022, ENM

All-glass flexible 1D photonic crystals fabricated via RF-sputtering as dichroic mirrors

Alice Carlotto Osman Sayginer Hao Chen Lam T. N. Tran Rossana Dell'Anna Anna Szczurek Stefano Varas Bartosz Babiarczuk Justyna Krzak Oreste S. Bursi Daniele Zonta Anna Lukowiak Giancarlo C. Righini Silvia M. Pietralunga Maurizio Ferrari Alessandro Chiasera

IFN-CNR, CSMFO Lab. and FBK Photonics Unit, Via alla Cascata 56/C, Povo, 38123 Trento, Italy and IFN-CNR, P.zza Leonardo da Vinci 32, 20133 Milan, Italy TUM, Ismaninger Str. 22, D-81675 Munich, Germany Dept. of Physics, Politecnico di Milano, P.zza L. da Vinci 32, 20133 Milan, Italy IFN-CNR, CSMFO Lab. and FBK Photonics Unit, Via alla Cascata 56/C, Povo, 38123 Trento, Italy and Dept. of Physics, Politecnico di Milano, P.zza L. da Vinci 32, 20133 Milan, Italy and and Dept. of Materials Technology, Faculty of Applied Sciences, HCMC University of Technology and Education, Vo Van Ngan Str. 1, Thu Duc District, 720214 Ho Chi Minh City, Vietnam MNF, FBK-SD, Fondazione Bruno Kessler, Via Sommarive 18, Povo, 38123, Trento, Italy IFN-CNR, CSMFO Lab. and FBK Photonics Unit, Via alla Cascata 56/C, Povo, 38123 Trento, Italy Dept. of Mechanics, Materials and Biomedical Engineering, Wroclaw University of Science and Technology, Smoluchowskiego 25, 50-370 Wroclaw, Poland Dept. of Mechanics, Materials and Biomedical Engineering, Wroclaw University of Science and Technology, Smoluchowskiego 25, 50-370 Wroclaw, Poland IFN-CNR, CSMFO Lab. and FBK Photonics Unit, Via alla Cascata 56/C, Povo, 38123 Trento, Italy and DICAM, University of Trento, via Mesiano 77, 38123 Trento, Italy IFN-CNR, CSMFO Lab. and FBK Photonics Unit, Via alla Cascata 56/C, Povo, 38123 Trento, Italy and DICAM, University of Trento, via Mesiano 77, 38123 Trento, Italy INTIBS, PAS, ul. Okólna 2, 50422, Wroclaw, Poland IFAC-CNR, MiPLab, Via Madonna del Piano 10, 50019 Sesto Fiorentino, Italy IFN-CNR, P.zza Leonardo da Vinci 32, 20133 Milan, Italy IFN-CNR, CSMFO Lab. and FBK Photonics Unit, Via alla Cascata 56/C, Povo, 38123 Trento, Italy IFN-CNR, CSMFO Lab. and FBK Photonics Unit, Via alla Cascata 56/C, Povo, 38123 Trento, Italy

The benefits obtained in terms of costs and applicability by the development of flexible and stretchable electronics, compared to their rigid counterparts, have fostered the birth of the idea of the photonics analogue. By adding mechanical flexibility to photonic structures, the fields of application expand incredibly. In particular, we are interested in 1D photonic crystals that, due to their versatility, are exploited in several applications from sensors to dichroic mirrors in photovoltaic cells. Here, a radio frequency (RF) sputtering deposition protocol is developed for fabricating dichroic mirrors on ultrathin flexible glass as well as on rigid substrates for comparison. The 1D multilayer structures, constituted by silica and hafnia layers, were first designed, and modelled by Transfer Matrix Method to tailor targeted optical features (transmission windows, stopband ranges) and then fabricated by RF-sputtering technique. The optical features of the samples, on both flexible and rigid substrates, were studied to highlight up to which extent the different nature of the substrates and the mechanical deformations are not influencing the key spectral properties of the photonic crystals.

ICOP Italian Conference on Optics and Photonics 2022, Trento, Italy, 15/06/2022-17/06/2022