Large surface area, 3D structured transparent electrodes with effective light management capability may represent a key component in the development of new generation optoelectronic and energy harvesting devices. We present an approach to obtain forest-like nanoporous/hierarchical Al-doped ZnO conducting layers with tunable transparency and light scattering properties, by means of room temperature Pulsed Laser Deposition in a mixed Ar:O2 atmosphere. The composition of the background atmosphere during deposition can be varied to modify stoichiometry-related defects, and therefore achieve control of electrical and optical properties, while the total background pressure controls the material morphology at the nano- and mesoscale and thus the light scattering properties. This approach allows to tune electrical resistivity over a very wide range (10^-1 - 10^6 Ohm*cm), both in the in-plane and cross-plane directions. Optical transparency and haze can also be tuned by varying the stoichiometry and thickness of the nano-forests.

Tuning electrical properties of hierarchically assembled Al-doped ZnO nanoforests by room temperature Pulsed Laser Deposition / Gondoni, Paolo; Mazzolini, Piero; Russo, Valeria; Diani, M; Amati, M; Gregoratti, L; Renzi, V. De; Gazzadi, G. C; Martí Rujas, J; LI BASSI, Andrea; Casari, CARLO SPARTACO. - In: THIN SOLID FILMS. - ISSN 0040-6090. - 594:(2015), pp. 12-17. [10.1016/j.tsf.2015.09.066]

Tuning electrical properties of hierarchically assembled Al-doped ZnO nanoforests by room temperature Pulsed Laser Deposition

MAZZOLINI, PIERO;
2015-01-01

Abstract

Large surface area, 3D structured transparent electrodes with effective light management capability may represent a key component in the development of new generation optoelectronic and energy harvesting devices. We present an approach to obtain forest-like nanoporous/hierarchical Al-doped ZnO conducting layers with tunable transparency and light scattering properties, by means of room temperature Pulsed Laser Deposition in a mixed Ar:O2 atmosphere. The composition of the background atmosphere during deposition can be varied to modify stoichiometry-related defects, and therefore achieve control of electrical and optical properties, while the total background pressure controls the material morphology at the nano- and mesoscale and thus the light scattering properties. This approach allows to tune electrical resistivity over a very wide range (10^-1 - 10^6 Ohm*cm), both in the in-plane and cross-plane directions. Optical transparency and haze can also be tuned by varying the stoichiometry and thickness of the nano-forests.
2015
Tuning electrical properties of hierarchically assembled Al-doped ZnO nanoforests by room temperature Pulsed Laser Deposition / Gondoni, Paolo; Mazzolini, Piero; Russo, Valeria; Diani, M; Amati, M; Gregoratti, L; Renzi, V. De; Gazzadi, G. C; Martí Rujas, J; LI BASSI, Andrea; Casari, CARLO SPARTACO. - In: THIN SOLID FILMS. - ISSN 0040-6090. - 594:(2015), pp. 12-17. [10.1016/j.tsf.2015.09.066]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11381/2880203
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