Department of
Condensed Matter Physics and Microelectronics, Faculty of Physics, Sofia
University, Bulgaria
________________________________________________________
Research
Field: Electronic and optical properties of semiconductor materials and
nanostructures (optical, photoelectrical and electrical studies, computer
simulations)
Subjects:
· Surface
photovoltage and photoconductivity
spectroscopy of:
o Perovskites and perovskites/Si structures
o GaSb micro-islands grown by thermal evaporation on Si
substrates with Ag nano-dots acting as catalysts.
o Nanostructures (quantum wells, superlattices, quantum wires, quantum dots) for optoelectronic applications (emitters, IR detectors);
o Dilute nitrides structures (GaAsN/GaAs, InGaAsN/GaAs, GaAsSbN/GaAs) for multi-junction solar cells
· Calculations of the reflectivity and
transmission spectra of multi-layers with rough interfaces.
|
Nanostructures and
Photovoltaics
|
Research stays abroad:
|
10.2021, 07.2024 |
Visiting professor in the Group of electrical engineering (GeePs),
CentraleSupelec, University Paris Saclay,
France. Surface photovoltage studies of
perovskite/Si structures. |
|
06 - 07.2008 |
Visiting Scientist
in the Department of Condensed Matter Physics, Institute of Physics,
"Gleb Wataghin" - UNICAMP, Campinas,
Brazil, in the team of Prof. Fernando Iikawa
(FAPESP fellowship) Optical studies of InP/GaAs
multi-layer quantum dots. |
|
11.2002-11.2003 |
Visiting Scientist
in Dept. of Physics and Measurement Technology, Linköping University, in the team
of Prof. Per-Olof Holtz (STINT fellowship). Optical studies of InAs
quantum dots. |
|
05 - 07.2002 |
Chair for
Semiconductor Physics, Institute for Technical Physics I, University of
Erlangen, in the team of Prof. Dr. Gottfried Döhler (DAAD fellowship). Electrical properties of low-temperature grown GaAs |
|
04 - 06.2001 |
Associated
researcher in the Laboratory of Disordered and Heterogeneous Materials,
University Paris 6, in the team of Prof. J.C.Bourgoin. Electron transport in irradiated
Quantum well IR Photodetectors. |
|
11.1997-11.1998 |
School of
Physics and Astronomy, University of St.Andrews,
in the team of Prof. Alan Miller. (Royal Society/NATO post-doctoral
fellowship) Reflectivity of GaAs/AlAs multiple
quantum wells with oxidised barriers. |
|
10.1992-07.1993 |
Institute of Micro-
and Optoelectronics, EPFL, Switzerland, in the team of Prof. F.K.Reinhart (Swiss government
fellowships). PL and PLE of GaAs/AlAs quantum wells
and quantum wires. |
|
01 - 06.1992 |
Group of Solid
State Physics, University Paris 7, in the team
of Prof. J.C.Bourgoin.). (French government
fellowship). Studies of DX-centers in AlGaAs and the band-offset of GaAs/GaInP heterojunctions |
