Department of
Condensed Matter Physics and Microelectronics, Faculty of Physics, Sofia University, Bulgaria
________________________________________________________
Vesselin T. Donchev
Participation in research contracts
·
with the Bulgarian National Science Fund, Ministry of Education
·
with the Sofia
University Scientific Research Fund
Contracts with the Bulgarian National Science Fund, Ministry of Education
1988-1991 Contract No. 258/
“Investigation
of the physical properties of impurities and defects in semiconductor materials
and structures”
leader:
Assoc. Porf. Dr. K.Germanova
1994-1997 Contract No. Ф448
“Electronic
structure and optical properties of GaAs quantum wells embedded in AlAs/GaAs
superlattices”.
leader: Assoc. Porf. Dr. K.Germanova
2000-2001 Contract No. МУ-Ф-01
”Calculation of
the electron and phonon states in AlAs/GaAs superlattices with embedded GaAs
quantum wells”
leader: N. Shtinkov
2000-2005 Contract No. Ф1002/00/
"Electronic and optical properties of GaAs quantum wells embedded in AlAs/GaAs
superlattices with graded interfaces"
leader: Assoc. Porf. Dr. K.Germanova
2003-2004 Contract No. МУФ 1302/
"Investigation
of the electronic states of V-shaped quantum wires by means of numerical,
photoelectrical and optical experiments.”
leader: M.Saraydarov
2004 - 2007 Contract No. У-Ф-08/04 /
“Surface
Photovolatge Spectroscopy of Semiconductor materials and structures”
leader: Assoc. Porf. Dr. K.Germanova
2005-2007 - Contract No. МУФ01/05
/
“Electronic
structure of GaAs/AlGaAs quantum wires with
graded interfaces ”
leader: Dr. M.Saraydarov (participation as a consultant)
2006-2009 Contract No. Д01-463/12.07.06 ,
”Multilayered structures and nanocomposite
materials for electronics applications”
leader: assoc. Prof. Dr. D.Nesheva
Programme module of the Faculty of
Physics,
”Characterisation of multilayered nanostructures and composite
nanomaterials by means of optical and electrical methods”
leader: assoc. Prof. Dr. V.Donchev
2006-2009 Contract No. ВУ-Ф-203/06 ,
„Formation
and study of solid state and organic thin films for sensor functions.”
leader: assoc. Prof. Dr. V. Strashilov
2007-2010. Contract
No. D01-1191/17.12.07 (NTK-X-1714/07)
“Growth and investigation of single
crystals of magnesium sulfite hexahydrate (pure and doped with nickel and
cobalt)”
leader: assoc. Prof. Dr. Ilia Iliev
2008-2010 Contract No. No. ДО 02-56/10.12.2008
Submicron machining and analysis of materials and structures using
scanning electron microscopy combined with focused ion beam.
leader:
assoc. Prof. Dr. Stoyan Russev
2008-2010 Contract No. D002-25/03.12.2008
Stricture and properties of InN,
nitrides (InGaN, InAlN) and heterostruictures
leader:
assoc. Prof. Dr. Evgenia Valcheva
2016-2019
Contract No. ДКОСТ
01/16
Advanced Materials for next generation solar cells
leader: assoc. Prof. Dr. V.Donchev
2019- Grant
agreement D01-214/2018
National Research Program
E+: Low Carbon Energy for the Transport and Households . Component 1: Storage and conversion of renewable energy,
WP 1.4 Other methods for
conversion and storage of renewable energy. Task 1.4.1: New materials, technologies and
systems for solar energy conversion; Subtask
1.4.1.1. Innovative solar cells based on new dilute
nitride materials
Subtask leader: assoc. Prof. Dr. V.Donchev
2022-2023 Contract № КП-06-Рила/10
/16.12.2021г.
Perovskite
materials and structures for photovoltaics (PERMAVOLT)- in frames of the French-Bulgarian collaboration
program RILA 2021
leader: assoc.
Prof. Vesselin Donchev
2025-2027 Contract КП-06 Dunav /5, 11.07.2025
Perovskites
and Novel Low-temperature A3B5 Semiconductor Materials:
Investigation and Advanced Characterization (PLASMIC),
Competition: Multilateral Competition for Scientific and Technological
Cooperation in the Danube Region - 2024
leader:. Prof.
DSc.Vesselin Donchev
* * *
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Contracts with the Sofia University
Scientific Research Fund
2000- 2001 Contract Nо. 399/
“Investigation
of the mechanisms of the radiative recombination in GaAs quantum wells embedded
in AlAs/GaAs superlattices”
leader: Assist.Prof. Dr. V.Donchev
2001- 2002
Contract Nо. 373 /
“Investigation
of diffused GaAs/AlGaAs quantum
wells with equidistant energy levels”
leader: Assist.Prof. Dr. V.Donchev
2002- 2003
.Contract Nо. 629/
“Investigation of the longitudinal photoconductivity of crescent-shaped GaAs/AlGaAs quantum
wires”
leader: Assist.Prof. Dr. V.Donchev
2006-2007.
Contract Nо. 59/06
„Study of nanostructures with graded interfaces”
leader: Assoc.Prof. Dr. V.Donchev
2007-2008 . contract No. 016/2007.
“Оptical properties of nanocomposites based on quantum dots in sol-gel matrixes
for optoelectronic applications”
leader:
Assoc.Prof. Dr. E. Valcheva
2008-2009 Contract No. 40/2008.
“Characterization of
InP/GaAs quantum dots by means of surface
photovoltage spectroscopy”
leader: Assoc.Prof. Dr. V.Donchev
2010 - 2011 Contract No 149/2010
“ Investigation of the optical
properties of multi-layer InAs/InP quantum
wires by means of surface
photovoltage spectroscopy”
leader: Assoc.Prof. Dr. V.Donchev
2011-2012 Contract No 38/2011
“Investigation of the optical
properties of multi-layers containing quantum
dots-in-well structures (InAs/InGaAs/GaAs) for infra-red photodetectors
leader: assist.
prof. Tsvetan Ivanov
2015 Contract No
71/2015
“Advanced materials based on A3B5 dilute
nitrides for next generation solar cells”
leader: Assoc.Prof. Dr. V.Donchev
2016 Contract No
114/2016
“Investigations of
A3B5 dilute nitrides for next generation
solar cells”
leader: Assoc.
Prof. Dr. V.Donchev
2024
Contract 80-10-159/17.04.2024
Investigation of GaSb
micro-dots on Si substrates
leader: Assoc. Prof. Kiril Kirilov
Sofia University Faculty of Physics Department
of Condensed Matter Physics
V.Donchev’s homepage