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 Group
|
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 |
