Dr. Stefania M. S. Privitera

Institute for Microelectronics and Microsystems (IMM), National Research Council (CNR), Catania, Italy

Dr. Stefania M. S. Privitera

Institute for Microelectronics and Microsystems (IMM), National Research Council (CNR), Catania, Italy

Co-authors

Following

Followers

Research Focus & Metrics

Explore full metrics on Scilit

Academic Career Length

29Years (1998-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

View All Publications

11 October 2004 in Applied Physics Letters

Journal Article

Amorphous-to-crystal transition of nitrogen- and oxygen-doped Ge2Sb2Te5 films studied by in situ resistance measurements

Stefania M. S. Privitera

E. Rimini

R. Zonca

The amorphous-to-crystal transition has been studied through in situ resistance measurements in

{Ge}_{2} {Sb}_{2} {Te}_{5}

thin films doped by ion implantation with nitrogen or oxygen. The dependence of the electrical resistivity and structure on the annealing temperature and time has been investigated in samples with different dopant concentrations. Enhancement of the thermal stability and increase of the mobility gap for conduction have been observed in O- and N-doped amorphous

{Ge}_{2} {Sb}_{2} {Te}_{5}

. Larger effects have been found in the case of nitrogen doping.

1 September 2013 in Microelectronic Engineering

Journal Article

Microscopy study of the conductive filament in HfO2 resistive switching memory devices

Stefania M. S. Privitera

G. Bersuker

B. Butcher

A. Kalantarian

S. Lombardo

P.D. Kirsch

31 May 2004 in Applied Physics Letters

Journal Article

Crystal nucleation and growth processes in Ge2Sb2Te5

Stefania M. S. Privitera

C. Bongiorno

E. Rimini

R. Zonca

The kinetics of the amorphous-to-crystal transition in

{Ge}_{2} {Sb}_{2} {Te}_{5}

thin films have been studied through in situ transmission electron microscopy analyses. By following the time evolution of the grain density and size, the growth velocity and the nucleation rate have been separately measured at different annealing temperatures. Activation energies of

2.9±0.5 eV

and

2.3±0.4 eV

have been obtained for the nucleation rate and the growth velocity, respectively. The barrier energy for the nucleation of a critical nucleus

{ΔG}^{*}

has been evaluated, and the scalability of phase change nonvolatile memories has been estimated.

15 July 2018 in Sensors

Journal Article

SiCILIA—Silicon Carbide Detectors for Intense Luminosity Investigations and Applications

+37

Silicon carbide (SiC) is a compound semiconductor, which is considered as a possible alternative to silicon for particles and photons detection. Its characteristics make it very promising for the next generation of nuclear and particle physics experiments at high beam luminosity. Silicon Carbide detectors for Intense Luminosity Investigations and Applications (SiCILIA) is a project starting as a collaboration between the Italian National Institute of Nuclear Physics (INFN) and IMM-CNR, aiming at the realization of innovative detection systems based on SiC. In this paper, we discuss the main features of silicon carbide as a material and its potential application in the field of particles and photons detectors, the project structure and the strategies used for the prototype realization, and the first results concerning prototype production and their performance.

1 October 2003 in Journal of Applied Physics

Journal Article

Crystallization and phase separation in Ge2+xSb2Te5 thin films

Stefania M. S. Privitera

E. Rimini

C. Bongiorno

R. Zonca

A. Pirovano

R. Bez

The electrical properties and the structure of isothermally annealed thin films of

{Ge}_{2+x} {Sb}_{2} {Te}_{5}

(x=0

and 0.5) have been studied by in situ electrical measurements, x-ray diffraction, and transmission electron microscopy analyses. Phase separation has been observed in samples with an excess of Ge; by annealing amorphous

{Ge}_{2.5} {Sb}_{2} {Te}_{5}

films at temperatures in the range

130–160 ° C,

the material cannot be completely converted into the metastable face-centered-cubic (fcc) structure. At temperatures higher than

160 ° C,

the residual amorphous material may be converted into a fcc structure with a lower lattice parameter.

7 September 2021 in Solar RRL

Journal Article

Development of Various Photovoltaic‐Driven Water Electrolysis Technologies for Green Solar Hydrogen Generation

Sonya Calnan

Rory Bagacki

Fuxi Bao

Iris Dorbandt

Erno Kemppainen

Ilknur Bayrak Pehlivan

+20

Direct solar hydrogen generation via a combination of photovoltaics (PV) and water electrolysis can potentially ensure a sustainable energy supply while minimizing greenhouse emissions. The PECSYS project aims at demonstrating a solar‐driven electrochemical hydrogen generation system with an area >10 m²with high efficiency and at reasonable cost. Thermally integrated PV electrolyzers (ECs) using thin‐film silicon, undoped, and silver‐doped Cu(In,Ga)Se₂and silicon heterojunction PV combined with alkaline electrolysis to form one unit are developed on a prototype level with solar collection areas in the range from 64 to 2600 cm²with the solar‐to‐hydrogen (StH) efficiency ranging from ≈4 to 13%. Electrical direct coupling of PV modules to a proton exchange membrane EC to test the effects of bifaciality (730 cm²solar collection area) and to study the long‐term operation under outdoor conditions (10 m²collection area) is also investigated. In both cases, StH efficiencies exceeding 10% can be maintained over the test periods used. All the StH efficiencies reported are based on measured gas outflow using mass flow meters.

About Me

Stefania Privitera received her B.S. degree (cum laude) in 1998 and her Ph.D. degree in Physics from the University of Catania, Italy, in 2002. From 2002 to 2004 she was a post doc at the University of Catania, working on phase change materials for non-volatile memories. In 2004, she joined the R&D Department of STMicroelectronics working on the design and integration of electronic devices. Since December 2011, she has been a Staff Research Scientist of the National Research Council (CNR) at the Institute for Microelectronics and Microsystems (IMM), Catania. Her research interests include the development of semiconductor devices and the electrical and structural characterization of electronic materials, with focus on phase change materials and on novel catalysts for solar fuel production. She is the author of 6 US-issued patents, 2 book chapters, about 77 scientific and technical papers published in international refereed journals, and more than 40 technical reports. She has presented oral and poster contributions at numerous international conferences/workshops, with 6 invited presentations at international conferences. Guest Editor of Special Issue "Materials and Devices for Solar to Hydrogen Energy Conversion", Energies, MDPI, and of the Special Issue " Synthesis, Properties and Applications of Germanium Chalcogenides", Nanomaterials, MDPI. Chair of the symposium on Phase Change Materials at the 2017 MRS Spring Meeting, Phoenix (US) and at the 2018 MRS Spring Meeting.

Dr. Stefania M. S. Privitera

Dr. Stefania M. S. Privitera

Research Focus & Metrics

Academic Career Length

Publication Type Breakdown

Representative Publications

About Me