in situ TEM; Transparent conductive oxide; Charge transport modelling; Macroelectronics
Rucavado Esteban, Landucci Federica, Döbeli Max, Jeangros Quentin, Boccard Mathieu, Hessler-Wyser Aïcha, Ballif Christophe, Morales-Masis Monica (2019), Zr-doped indium oxide electrodes: Annealing and thickness effects on microstructure and carrier transport, in Physical Review Materials
, 3(8), 084608-084608.
Graužinytė Miglė, Goedecker Stefan, Flores-Livas José A. (2018), Towards bipolar tin monoxide: Revealing unexplored dopants, in Physical Review Materials
, 2(10), 104604-104604.
Ingenito Andrea, Nogay Gizem, Jeangros Quentin, Rucavado Esteban, Allebé Christophe, Eswara Santhana, Valle Nathalie, Wirtz Tom, Horzel Jörg, Koida Takashi, Morales-Masis Monica, Despeisse Matthieu, Haug Franz-Josef, Löper Philipp, Ballif Christophe (2018), A passivating contact for silicon solar cells formed during a single firing thermal annealing, in Nature Energy
, 3(9), 800-808.
Rucavado Esteban, Graužinytė Miglė, Flores-Livas José A., Jeangros Quentin, Landucci Federica, Lee Yeonbae, Koida Takashi, Goedecker Stefan, Hessler-Wyser Aïcha, Ballif Christophe, Morales-Masis Monica (2018), New Route for “Cold-Passivation” of Defects in Tin-Based Oxides, in The Journal of Physical Chemistry C
, 122(31), 17612-17620.
Graužinytė Migle, Goedecker Stefan, Flores-Livas José (2017), Computational screening of useful hole-electron dopants in SnO2, in Chemistry of Materials
, 29(23), 10095-10103.
Rucavado Esteban, Jeangros Quentin, Urban Daniel F., Holovský Jakub, Remes Zdenek, Duchamp Martial, Landucci Federica, Dunin-Borkowski Rafal, Körner Wolfgang, Elsässer Christian, Hessler-Wyser Aïcha, Morales-Masis Monica (2017), Enhancing the optoelectronic properties of amorphous zinc tin oxide by subgap defect passivation : A theoretical and experimental demonstration, in Physical Review B
, 95(245204), 1-10.
De Wolf Stefaan, Ager Joel W., Morales-Masis Monica, Woods-Robinson Rachel, Ballif Christophe (2017), Transparent Electrodes for Efficient Optoelectronics, in Advanced Electronic Materials
, (1600529), 1-17.
Morales-Masis Monica, Rucavado Esteban, Jeangros Quentin, Landuchi Federica, Hessler-Wyser Aïcha, Ballif Christophe (2017), High performance amorphous Zn-Sn-O: impact of composition, microstructure, and thermal treatments in the optoelectronic properties, in SPIE OPTO
Werner Jérémie, Moon Soo-Jin, Sacchetto Davide, Rienaecker Michael, Peibst Robby, Brendel Rolf, Niquille Xavier, De Wolf Stefaan, Löper Philipp, Morales-Masis Monica, Nicolay S., Niesen Bjoern, Walter Arnaud, Esteban Rucavado, Ballif Christophe (2016), Zinc tin oxide as high-temperature stable recombination layer for mesoscopic perovskite/silicon monolithic tandem solar cells, in Applied Physics Letters
, 109, 233902-1-233902-4.
Morales-Masis Monica, Dauzou Fabien, Dabirian Ali, Lifka Herbert, Ruske Manfred, Moet Date, Hessler-Wyser Aïcha, Ballif Christophe, Jeangros Quentin, Gierth Rainald (2016), An Indium-Free Anode for Large-Area Flexible OLEDs: Defect-Free Transparent Conductive Zinc Tin Oxide, in Advanced Functional Materials
, 26, 384-392.
In the past 10 years we have experienced a revolution in optoelectronic devices, which are becoming more efficient, lighter, in some cases wearable or even fully transparent. This includes ubiquitous flat-panels displays, solar cells, x-ray detectors. This trend demands a rapid development of new Transparent Conductive Oxide (TCOs) materials (which are used as transparent electrode in most optoelectronic devices) with not only the basic requirements of transparency and conductivity, but also properties like homogeneity (e.g to avoid grain boundaries when used in transistors) and mechanical robustness or flexibility when used in bendable devices. The extensive application of TCOs also requires the use of earth-abundant materials for their production, and therefore the replacement of, for example the rather rare metal indium (In).With the ultimate goal of designing and discovering new TCO materials, this collaborative project aims at bridging the gap between material processing, material simulation and material characterization, to understand the factors affecting the charge transport in disordered or “amorphous” TCOs. This will make possible the design and synthesize of new earth-abundant TCO materials with superior electrical, optical and mechanical properties. Disordered TCO materials are of great interest because of their ease of fabrication, and because of the variety of composition and atomic structure achieved ranging from quasi-polycrystalline to fully amorphous. However, disordered TCO materials are complex systems and, their electronic properties cannot be fully understood from sole experimental methods or material simulations, slowing down the development of new materials. To address this problem, we combine three strongly complementary fields in material science research, one theoretical (structural and electronic properties modeling) and two experimental ones (thin-film growth and nano-scale microscopy). The goal is to unravel the missing link between measured and simulated microstructural and electronic properties, to understand the factors affecting electron transport in disordered TCOs. This will be done by local nano-scale characterization of microstructure using unique ex and in situ advanced electron microscopy techniques; material structure and electronic properties prediction using high-end modeling algorythms; and material synthesis using superior thin-film TCO fabrication facilities. The gathered knowledge will be exploited to propose novel TCO coating processes allowing the design of new earth-abundant TCO materials with optimized electrical and optical properties. Due to the complex structure of disordered materials, both experimental and numerical studies will be highly challenging, but the complementary nature of the techniques constitutes the originality and strength of this project.