Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1664463 | Thin Solid Films | 2015 | 18 Pages |
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 tuning electrical resistivity over a very wide range (10â 1 â 106 Ω 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.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
P. Gondoni, P. Mazzolini, V. Russo, M. Diani, M. Amati, L. Gregoratti, V. De Renzi, G.C. Gazzadi, J. MartÃ-Rujas, A. Li Bassi, C.S. Casari,