As research in the field of Transparent Conducting Oxides is forced to move away from indium-based materials, the need to obtain highly performing indium-free transparent conducting layers for photovoltaic and optoelectronic applications is continuously growing. Aluminum-doped ZnO is a suitable candidate, and Pulsed Laser Deposition a powerful technique for its synthesis in a controlled way. Al:ZnO films were grown by pulsed laser deposition at room temperature with a fixed oxygen atmosphere (2 Pa O2). We studied the influence of film thickness (from 100 nm to 1 m) on structural and functional properties, which were characterized by X-ray Diffraction, Atomic Force and Scanning Electron Microscopy, Van der Pauw and Hall electrical measurements and transmittance spectra. Low resistivity (of the order of 10-4 ohm x cm) and high transparency (>80% in the visible range) were found, compatible with the state of the art for films grown on heated substrates, thus opening the possibility to develop flexible electrodes for application in organic-hybrid photovoltaic or optoelectronic devices.

Highly performing Al:ZnO thin films grown by Pulsed Laser Deposition at Room Temperature

GONDONI, PAOLO;RUSSO, VALERIA;MARTI RUJAS, JAVIER;BOTTANI, CARLO ENRICO;LI BASSI, ANDREA;CASARI, CARLO SPARTACO
2013

Abstract

As research in the field of Transparent Conducting Oxides is forced to move away from indium-based materials, the need to obtain highly performing indium-free transparent conducting layers for photovoltaic and optoelectronic applications is continuously growing. Aluminum-doped ZnO is a suitable candidate, and Pulsed Laser Deposition a powerful technique for its synthesis in a controlled way. Al:ZnO films were grown by pulsed laser deposition at room temperature with a fixed oxygen atmosphere (2 Pa O2). We studied the influence of film thickness (from 100 nm to 1 m) on structural and functional properties, which were characterized by X-ray Diffraction, Atomic Force and Scanning Electron Microscopy, Van der Pauw and Hall electrical measurements and transmittance spectra. Low resistivity (of the order of 10-4 ohm x cm) and high transparency (>80% in the visible range) were found, compatible with the state of the art for films grown on heated substrates, thus opening the possibility to develop flexible electrodes for application in organic-hybrid photovoltaic or optoelectronic devices.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/695516
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