Achieving an active manipulation of colours has huge implications in optoelectronics, as colour engineering can be exploited in a number of applications, ranging from display to lightning. In the last decade, the synergy of the highly pure colours of 1D photonic crystals, also known as Bragg stacks, with electro-tunable materials have been proposed as an interesting route to attain such a technologically relevant effect. However, recent works rely on the use of liquid electrolytes, which can pose issues in terms of chemical and environmental stability. Here, we report on the proof-of-concept of an electrolyte free and solution-processed electro-responsive Bragg stack. We integrate an electro-responsive plasmonic metal oxide, namely indium tin oxide, in a 1D photonic crystal structure made of alternating layers of ITO and TiO(2)nanoparticles. In such a device, we observed a maximum of 23 nm blue-shift upon the application of an external bias (10 V). Our data suggest that electrochromism can be attained in all-solid state systems by combining a judicious selection of the constituent materials with device architecture optimisation.

Electro-responsivity in electrolyte-free and solution processed Bragg stacks / Moscardi, L; Paterno, Gm; Chiasera, A; Sorrentino, R; Marangi, F; Kriegel, I; Lanzani, G; Scotognella, F. - In: JOURNAL OF MATERIALS CHEMISTRY. C. - ISSN 2050-7526. - 8:37(2020), pp. 13019-13024. [10.1039/d0tc02437f]

Electro-responsivity in electrolyte-free and solution processed Bragg stacks

Chiasera A;
2020-01-01

Abstract

Achieving an active manipulation of colours has huge implications in optoelectronics, as colour engineering can be exploited in a number of applications, ranging from display to lightning. In the last decade, the synergy of the highly pure colours of 1D photonic crystals, also known as Bragg stacks, with electro-tunable materials have been proposed as an interesting route to attain such a technologically relevant effect. However, recent works rely on the use of liquid electrolytes, which can pose issues in terms of chemical and environmental stability. Here, we report on the proof-of-concept of an electrolyte free and solution-processed electro-responsive Bragg stack. We integrate an electro-responsive plasmonic metal oxide, namely indium tin oxide, in a 1D photonic crystal structure made of alternating layers of ITO and TiO(2)nanoparticles. In such a device, we observed a maximum of 23 nm blue-shift upon the application of an external bias (10 V). Our data suggest that electrochromism can be attained in all-solid state systems by combining a judicious selection of the constituent materials with device architecture optimisation.
2020
37
Moscardi, L; Paterno, Gm; Chiasera, A; Sorrentino, R; Marangi, F; Kriegel, I; Lanzani, G; Scotognella, F
Electro-responsivity in electrolyte-free and solution processed Bragg stacks / Moscardi, L; Paterno, Gm; Chiasera, A; Sorrentino, R; Marangi, F; Kriegel, I; Lanzani, G; Scotognella, F. - In: JOURNAL OF MATERIALS CHEMISTRY. C. - ISSN 2050-7526. - 8:37(2020), pp. 13019-13024. [10.1039/d0tc02437f]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/342768
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