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
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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