Special Issue "Advances in Transparent Conducting Materials"
Deadline for manuscript submissions: closed (31 May 2017)
Prof. Dr. Andrea Li Bassi
Department of Energy, Politecnico di Milano, via Ponzio 34/3, 20133 Milano, Italy
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Interests: nanostructured materials growth; nanostructures for photoconversion and energy applications; carbon nanostructures; nanostructured oxide thin films; structure, vibrational and electronic properties
Prof. Dr. Carlo S. Casari
Associate Professor of Physics of Matter, Department of Energy, Politecnico di Milano, via Ponzio 34/3, 20133 Milano, Italy
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Interests: nanostructured material growth; carbon nanostructures; structure, vibrational and electronic properties; nanostructured oxides for energy applications
Transparent conducting materials (TCM) are being investigated for the development of transparent electrodes in a wide variety of applications, ranging from photovoltaics and photocatalysis, photoelectrochemistry, transparent electronics, optoelectronics and light emitting diodes, to smart windows, flat panel displays, and touch screens.
Typically, conductivity of transparent materials is obtained by strong (degenerate) doping of wide-bandgap oxides. Traditionally, the most studied TCM are, thus, transparent conducting oxides (TCO) and some of them are commercially available and widely employed. However, current research involving different fields (from physics and chemistry to materials science and nanotechnology) still devotes extensive and renewed attention to this class of materials for a number of reasons:
- the improvement of the material properties and performance often requires a compromise between electrical conductivity and transparency in different regions of the electromagnetic spectrum, so that there is still room for material optimization depending on the desired applications;
- new TCM are today investigated or searched for, e.g., for cost reduction (In-free TCO; synthesis by solution processing instead of vacuum vapor deposition techniques); to address material stability in aggressive environments (e.g., TiO2-based TCO for photoelectrochemical applications); to realize non-oxide TCM, based for instance on metal nanowire (NW) networks or 2D materials such as graphene; to develop p-type TCM (which are still far from applications but would be necessary, e.g., to realize transparent p-n junctions);
- achievement of novel, additional functional properties beyond electrical conduction and transparency is often desirable: e.g. compatibility with plastic substrates or flexibility (amorphous TCOs, metal NWs, graphene), which requires low processing/synthesis temperatures; light scattering/trapping capability, that can be obtained by morphology modulation at the nano/mesoscale (e.g., using hierarchical nanostructures); large surface area/interface for the realization of diffuse heterojunctions, e.g., in organic/hybrid solar or photocatalysis devices; implementation of IR plasmonic effect; etc.;
- a better understanding of the TCM physics, e.g., in terms of comprehension of the relationship between the complex and non-trivial defect chemistry and the electronic/optical functional properties, which of course would open the way to the possibility of a better engineering/tailoring of the properties.
This Special Issue is open to original and relevant contributions in this growing and strongly interdisciplinary field, addressing different aspects from synthesis, comprehension, material development, demonstration of novel functionalities, novel applications.
Prof. Dr. Andrea Li Bassi
Prof. Dr. Carlo Spartaco Casari
Manuscript Submission Information
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- multifunctional TCM
- p-type TCO
- non-oxide TCM
- nanostructure-based approaches to TCM
- defect chemistry of TCO
- hierarchical nanostructures/mesoporous TCM
- photovoltaics/photocatalysis applications of TCM
- organic/hybrid devices
- transparent electronics
- TCM dielectrics
- growth techniques
- characterization techniques