| Дипломна работа |
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Васил Димитров Вълчев, Термоелектрични свойства на оловен телурид легиран с Ag., СУ, Физически факултет, Ръководител:доц. Ст. Димитрова
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1980
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| Дисертация д-р |
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Васил Димитров Вълчев, Получаване и свойства на PbTe:Cr, СУ "Св. Кл. Охридски", Физически факултет, Ръководител:доц. Стайка Димитрова
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1989
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| Друго (научно-популярни и др. под.) |
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Васил Димитров Вълчев, “60 години катедра Обща физика”, ГСУ, Юбилейно издание, 50 години Физически факултет, Университетско издателство „Св. Кл. Охридски”
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2015
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| Научен проект |
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1
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Васил Д. Вълчев, Нано-размерни ефекти при слоести оксиди: нов подход за разработване на термоелектрични оксидни материали , Член, ФНИ, Номер на договора:ДО 02-309/2008
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2008
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2
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Васил Д. Вълчев, Разпенени полипропиленови нанокомпозити: получаване, структурно охарактеризиране, термомеханично поведение и приложение, Член, ФНИ, Номер на договора:ДО 02-202/2008
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2008
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| Статия в научно списание |
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1
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S.G. Harizanova, E.N. Zhecheva, V.D. Valchev, M.G. Khristov, P.V. Markov, R.K. Stoyanova, Effect of the particle sizes on the thermoelectric efficiency of metal substituted LaCo1-xNixFexO3 perovskites and Zn1-xAlxO wurtzite, Bulgarian Chemical Communications, том:49, брой:Special Issue F, 2017, стр.:100-106
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2017
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2
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M. Iliev, G. Kotzev, V. Vulchev, Electrical properties of foamed polypropylene/carbon black composites , Journal of Physics: Conference Series , том:682, брой:1, 2016, doi:10.1088/1742-6596/682/1/012016
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2016
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3
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S.G. Harizanova, E.N. Zhecheva, M.G. Khristov, V.D. Valchev, R.K. Stoyanova, Thermoelectric oxide materials based on cobalt perovskites, Bulgarian Chemical Communications, том:Volume 48, Special Issue A, 2016, стр.:82-87, Ref, Web of Science
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2016
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4
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Sonya G. Harizanova, Ekaterina N. Zhecheva, Vassil D. Valchev, Mitko G. Khristov, Radostina K. Stoyanova, Improving the thermoelectric efficiency of Co based ceramics., Matherials Today: Proceedings, том:2, 2015, стр.:4256-4261, doi:10.1016/j.matpr.2015.09.011, Ref
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2015
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5
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Djoumaliisky, S., Benavente, R., Kotzev, G., Vulchev, V., Krusteva, E., Krastev, R., Conductive composites based on metallocene isotactic poly(propylene): Preparation and properties
, Macromolecular Symposia , том:311, брой:1, 2012, стр.:64-69, doi:10.1002/masy.201000105, Ref, Web of Science, PhD
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2012
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6
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V. Vulchev, L. Vassilev, S. Harizanova, M. Khristov, E. Zhecheva, R. Stoyanova, Improving of the thermoelectric efficiency of LaCoO 3 by double substitution with nickel and iron
, Journal of Physical Chemistry C, том:116, брой:25, 2012, стр.:13507-13515, doi:10.1021/jp3021408, Ref, Web of Science
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2012
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7
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Kotzev, G., Vulchev, V., Djoumaliisky, S, Natova, M., Krastev, R, Iliev M., Electroconductivity and mechanical properties of melt compounded PP/CB composites , Nanoscience & Nanotechnology, том:11, 2011, стр.:217-220, Ref
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2011
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8
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S. Russev, N. Alexandrov, K. Marinova, K. Danov, N. Denkov, L. Lyutov, V. Vulchev, C. Bilke-Krause, Instrument and methods for surface dilatational rheology measurements, Review of Scientific Instruments, том:79, брой:10, 2008, стр.:104102-104110, doi:dx.doi.org/10.1063/1.3000569, Ref, IR , SCOPUS, SJR (1.274 - 2008), в сътрудничество с чуждестранни учени
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2008
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9
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N. Vankova, Slavka Tcholakova, N. D. Denkov, V. Vulchev, I. B. Ivanov, T. Danner, Emulsification in turbulent flow: 1. Mean and maximum drop diameters in inertial and viscous regimes, Journal of Colloid and Interface Science , 2007, pages:363-0, doi:10.1016/j.jcis.2007.03.059, Ref, IR , SCOPUS, SJR (1.54 - 2020), SCOPUS Quartile: Q1 (2007), International, PhD
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2007
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10
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N. Vankova, Slavka Tcholakova, N. D. Denkov, V. Vulchev, T. Danner, Emulsification in turbulent flow: 2. Breakage rate constants, Journal of Colloid and Interface Science, 2007, pages:612-0, doi:10.1016/j.jcis.2007.04.064, Ref, IR , SCOPUS, SJR (1.54 - 2020), SCOPUS Quartile: Q1 (2007), International, PhD
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2007
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11
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Zlatanov, ZK, Vulchev, VD, Gulmezov, MI, Optical investigation of PbTe : Gd thin films, JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, vol:9, issue:4, 1998, pages:301-307, ISSN (print):0957-4522, ISSN (online):1573-482X
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1998
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12
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L. Vassilev, V. Vulchev, L. Lyutov, S. Russev, Sensitivity of silver films to H2S contamination: ellipsometric and conductivity studies, Sensors and Actuators, B: Chemical, том:B28, брой:3, 1995, стр.:223-226, doi:10.1016/0925-4005(95)01723-2, Ref, Web of Science
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1995
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13
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S. Russev, L. Vassilev, V. Vulchev, L. Lutov, T. Argirov, Growth of thin Ag2S films on silver layers: In situ ellipsometric and conductivity studies, Journal of Physics: Condensed Matter, том:6, брой:31, 1994, стр.:6237-6244, doi:10.1088/0953-8984/6/31/023, Ref, Web of Science, MSc
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1994
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14
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З. Златанов, Л. Борисова, В. Вълчев, Получаване и свойства на твърди разтвори на системата Pb1-xGdxTe, ГСУ, том:85, 1993, стр.:47-54, Ref
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1993
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15
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В. Вълчев, Л. Борисова, Влияние на примеси от 3-d преходни метали на някои електронни свойства на PbTe, ГСУ, том:83/84, 1992, стр.:89-109, Ref
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1992
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16
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Z. Zlatanov, L. Borisova, V. Vulchev, Electron Effective Mass in Pb1-xGdxTe, Infrared Phys. , том:31, 1991, стр.:507-510, doi:10.1016/0020-0891(91)90030-J, Ref, Web of Science
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1991
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17
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Z. Zlatanov, V. Vulchev, L. Borisova, Transport properties in the Pb1-xGdxTe system, Journal of Materials Science Letters , том:10, 1991, стр.:701-702, doi:10.1007/BF00722773, Ref
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1991
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18
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Z. Zlatanov, L. Borisova, V. Vulchev, L. Bozukov, Electrophysical Properties of Pb1-xGdxTe, Infrared Phys. , том:30, брой:5, 1990, стр.:431-433, doi:10.1016/0020-0891(90)90002-D, Ref, Web of Science
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1990
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19
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z. zlatanov, v. vulchev, l. borisova, Mechanical and structural investigations of lead telluride doped by gadolinium, INFRARED PHYSICS, 1990, Ref, Web of Science
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1990
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20
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K. Germanova, V. Donchev, V. Valchev, Ch. Hardalov, I. Yanchev, On the Maximum in Hall Coefficient Temperature Dependence in Medium-Doped n-GaAs, Appl. Phys. A, том:50, брой:4, 1990, стр.:369-372, doi:10.1007/BF00323593, Ref, Web of Science
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1990
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21
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G.Ch.Christakudis, V.D. Vulchev, A system for Determining the Transport Parameters of Semiconductor Materials, Bulg. J.Phys. , том:16, 1989, стр.:345-349, Ref
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1989
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22
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K. Germanova, V. Donchev, V. Valchev, Ch. Hardalov, Characterization of Medium-Doped n-Type GaAs by Hall Measurements, phys.stat.sol.(a) , том:113, брой:2, 1989, стр.:231-233, doi:10.1002/pssa.2211130269, Ref, Web of Science
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1989
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23
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Z. Zlatanov, V. Vulchev, L. Borisova, G. Christakudis, Fabrication and Thermoelectric Power of PbTe(Cr), Bulg. J. Phys., том:16, 1989, стр.:542-546, Ref
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1989
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24
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G. Christakudis, V. Vulchev, S. Russev, B. Angelov, On line system for transport phenomena measuring, Annu. Univ. Sofia Fac. Phys., том:78, 1988, стр.:17-0, Ref, MSc
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1988
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25
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V. Vulchev, Optical Absorption in Chromium Doped Lead Telluride, Bulg. J. Phys., том:15, 1988, стр.:56-0, Ref
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1988
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26
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V.D. Vulchev, L.D. Borisova, Impurity States of Chromium in Lead Telluride, phys. stat. sol (a) , том:99, 1987, стр.:53-0, Ref, Web of Science
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1987
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27
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V.D. Vulchev, L.D. Borisova, Impurity States of Chromium in Lead Telluride, Annual of the University of Sofia , том:80, 1987, стр.:145-150, Ref
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1987
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28
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V. Vulchev, L. Borisova, S. Dimitrova, Preparation and Properties of the Pb1-x CrxTe System“, phys. stat. sol. (a) , том:97, 1986, стр.:79-0, Ref, Web of Science
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1986
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29
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Г. Христакудис, В. Вълчев, С. Русев, Б. Ангелов, Микрокомпютърна система за измерване кинетичните параметри на полупроводници, Стандарти и Качество, том:1, 1985, стр.:36-0, Ref
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1985
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30
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Baleva,M.I., L.D.Borisova, V.D. Vulchev, Influence of Cr-impurity on the optical and transport properties of PbTe, Annual of the University of Sofia , том:78, 1984, стр.:81-88, Ref
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1984
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31
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G.Ch. Christakudis, V.D. Vulchev, S.Ch. Rusev, B.A. Angelov, On-line System for Transport Phenomena Measuring, Annual of the University of Sofia , том:78, 1984, стр.:17-0, Ref
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1984
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32
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M.I. Baleva, L.D. Borissova, V.D. Vulchev, Transport Properties of Pb0.997Cr0.003Te, J.Phys.C: Solid State Physics, том:17, брой:33, 1984, стр.:895-899, doi:10.1088/0022-3719/17/33/002, Ref, Web of Science
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1984
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33
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L. Borissova, V. Vulchev, St. Dimitrova, A. Toneva, G. Hristakudis, Thermoelectric Properties of Pressed Silver-doped Lead Telluride, Bulg.J.Phys. , том:10, 1983, стр.:542-547, Ref
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1983
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34
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Л.Д. Борисова, В.Д. Вълчев, О.Ж. Георгиева, Ст.К. Димитрова, Влияние на някои технологични условия върху термоелектричната ефективност на оловен телурид легиран с 0.1%(ат.) бисмут при 300К, ГСУ, том:76, 1983, стр.:31-34, Ref
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1983
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35
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L.D. Borissova, M.A. Berchenko, V.D. Vulchev, Electric Properties of n-Type Lead Telluride Doped with Chromium, Bulg.J.Phys., том:9, 1982, стр.:642-649, Ref, в сътрудничество с чуждестранни учени
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1982
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36
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L.D. Borissova, V.D. Vulchev, S.K. Dimitrova, G. Ch. Christakudis, Thermoelectric Properties of Lead Telluride with Bismuth Impurities, Bulg.J.Phys. , том:9, 1982, стр.:634-641, Ref
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1982
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| Статия в поредица |
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Iliev, M., Kotzev, G., Vulchev, V., Electrical properties of foamed polypropylene/carbon black composites, Journal of Physics: Conference Series, 2016
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2016
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| Статия в сборник (на конференция и др.) |
|
1
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S. Harizanova, E. Zhecheva, R. Stoyanova, V. Valchev, M. Khristov, Aluminium doped ZnO as a thermoelectric oxide material, Materials and Technologies for Energy Efficiency, редактор/и:A. Mendez-Vilas, издателство:Universal-Publishers, 2015, стр.:254-258
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2015
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2
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E. Zhecheva, S. Ivanova, M. Khristov, V. Vultchev, L. Vassilev, R. Stoyanova, Nickel and Iron Co-substituted Lantanum Cobaltates as New Thermoelectric Oxide
Materials
, Fuelling the Future: Advances in Science and Technologies for Energy Generation, Transmission and Storage, редактор/и:by A. Mendez-Vilas (editor), издателство:Brown Walker Press, 2012, стр.:475-479, Ref
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2012
|
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3
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Kotzev, G.K., Djoumaliisky, S.L., Natova, M.M., Vulchev, V.D., Krusteva, E.D, Comparative investigation of the properties of two types melt compounded PP/carbon black composites , 2nd Int. Symp. Frontiers in Polymer Science, 2011, стр.:28-30, PhD
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2011
|
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4
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L. Vassilev, V. Vulchev, L. Lyutov, S. Russev, Ellipsometric and resistivity studies of the growth of thin Ag2S films on silver layers, Electronic, optoelectronic, and magnetic thin films: proceedings of the Eighth International School on Condensed Matter Physics, редактор/и:Marshall, J.M. Kirov, N. Vavrek, A., издателство:Research Studies Press, 1994, стр.:596-599
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1994
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| Участие в конференция |
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1
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Секционен доклад, С. Иванова, Thermal Stability and Thermoelectric Efficiency of Doble Substituted LaCoO3 with Nickel and Iron
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2012
|
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2
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Секционен доклад, Р. Стоянова, Substitution Strategy for Controlling the Thermoelectric Efficiency of Layered and Perovskite Oxides
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2012
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3
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Секционен доклад, Е. Жечева, Nickel and Iron Co-substituted Lantanum Cobaltates as New Thermoelectric Oxide Materials
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2012
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4
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Секционен доклад, М. Христов, Optimization of Thermoelectric Efficiency of LaCoO3 by
Double Substitution with Nickel and Iron
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2011
|
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5
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Секционен доклад, L. Vassilev, Thermoelectric Properties of Nickel and Iron Substituted Lantanum Cobaltates
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2010
|
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