Academician Jordan Malinovski was born on 03.06.1923 ...
Acad. J. Malinovski (1923 - 1996)
Academician Jordan Malinovski was born on 03.06.1923 in Sliven, Bulgaria. He studied in the American college in Sofia and after graduation in 1943, he took part in the World War II and was awarded a medal. In 1948 he graduated the Faculty of mathematics and physics with specialty “Chemistry” in Sofia State University “Kl. Ohridski” and worked as a research associate in the field of physical chemistry. From 1948 up to 1958 he was a research associate in the Institute of Physics to the Bulgarian Academy of Sciences (BAS). He got his PhD degree in chemistry in 1958 and his Doctor of Science degree in 1969. In 1959 he was elected for an associated professor, and in 1964 – for professor in the Institute of physical chemistry to BAS. In 1989 he was elected for an academician of BAS. He was a founder of the Central laboratory of photoprocesses to BAS (1967) being its director up to 1992, when it was elected for the President of BAS. He remained on this high position till the end of his life in 1996.
Academician Jordan Malinovski began his scientific activity in the field of electro-crystallization under the guidance of academician Rostislav Kaishev. As a research associate in the Institute of Physics to BAS, he obtained substantial results on physical formation of photo-emulsions. He developed a method for differential development which permitted creation of photo-materials with new improved characteristics and which had been applied by many photographic firms. A special place in his scientific activity took simulations of the mechanism of the elementary photo-process for mono-crystals of silver bromide. For this purpose a method was developed for direct synthesis of mono-crystals from super-pure silver halides, which is still widely used all over the world for synthesis of compounds of high purity that are sensitive to light and other radiations.
Further in his career, the interests of academician Jordan Malinovski were focused on study of formation of the “latent image” - an invisible image, formed at illumination of the photo-sensitive material, which is visualized by means of physical and chemical development. The obtained unique results proved the important role of the so called photo-holes in the photoinduced changes in silver halides. These results were in the base of a new theory, which became wellknown in the international scientific literature as a “symmetric scheme of Malinovski”. It takes in account both electrons and photo-holes. It has been established by modeling that one of the rather complicated and unclear processes – action of the developer which distinguishes the exposed from the non-exposed parts of the photo-material – is a special case of the theory of crystal growth. The systematic research made possible clarification of the photographic process also in others photo-sensitive materials, including non-silver compounds. Advanced technologies for photomaterials production have been developed on the basis of highly effective completely dry approach for deposition of silver and non-silver light-sensitive substances by evaporation in vacuum. Practical implementation of the pioneer achievements of academician Jordan Malinovski made possible organization of a new for Bulgaria high-tech field – production of photo-raster transducers.
Academician Jordan Malinovski was widely recognized all over the world. He was an honorable member of the Royal society of the United Kingdom, of American and Japanese societies for photographic science and technique, of European academy of sciences, art and literature, of Academy of Valonia in Belgium etc. He was awarded numerious national and international awards as the medal of the German academy for natural sciences, Lieven-Gevaert Medal – the most prestigious award of American society for photographic science and technique, award for the best paper of the year of the American journal for photographic science and technique (2 times); Dimitrov award; decorations “Republic Bulgaria” – ІІІ degree, “Cyrill and Methodius” – ІІ degree, medal “1300 anniversary of Bulgaria”, medal “100 years BAS” etc. Many years he was a member of the International committee for photographic science and editor in prestigious international journals. As an outstanding scientist he was invited to deliver keynote lectures at all international conferences in the field of photographic processes.
As a president of BAS academician Jordan Malinovski fruitfully worked for reforming the Academy. He made a lot of efforts to keep the leading position of BAS in the scientific community of Bulgaria and Bulgarian society. Doctor's thesis of Acad. J. Malinovski (in Bulgarian, .pdf)
The Institute of Optical Materials and Technologies (IOMT) “Academician Jordan Malinovski” has been established on July 1, 2010 by merging two research units: The Central Laboratory of Photo-processes and The Central Laboratory of Optical Recording and Processing of Information. The main research goals of the institute are: ⁕ Investigation of photo-induced processes in micro- and nano-sized layers and structures and to develop high-technology novel materials and methods for optical applications in flexible transparent electronics, ecology, biomedicine, food industry, non-destructive testing and cultural heritage protection; ⁕ Training of highly qualified personnel in these areas. Training of graduates and postgraduates; ⁕ Carrying out interdisciplinary research and joint projects with experts from other research units; ⁕ Implementation of the scientific product through innovation and knowledge transfer to industry.◊
Best results for 2015
Multifunctional electro-optically controlled hybrid device based on graphene conductive electrodes, project coordinator - assoc. prof. Dr. Vera Marinova. An electro-optical hybrid structure, based on photoconductive inorganic crystal (Ru-doped Bi12SiO20), highly birefringent liquid crystal ...
Best results for 2015
Multifunctional electro-optically controlled hybrid device based on graphene conductive electrodes, project coordinator - assoc. prof. Dr. Vera Marinova.
An electro-optical hybrid structure, based on photoconductive inorganic crystal (Ru-doped Bi12SiO20), highly birefringent liquid crystal (MLC-2070, nematic phase) and graphene conductive layer (grown by CVD method) has been constructed and demonstrated. The proposed device operates at near infrared spectral range and found applications as spatial light modulator in display technology, optical shutters, for real –time visualization of bio-medical objects, etc.
The results have been achieved under Bulgarian National Science Fund grant No FNI -Т02/26 and International collaboration program between IOMT (BAS) and National Chiao Tung University, Taiwan. ◊
“Enhanced efficiency of organic solar cells based on diketopyrrolopyrrole dye by treating the active layers with solvent vapors, coordinator – assoc. prof. Dr I. Zhivkov. Тhe influence of different solvents vapors on the structure and properties of thin composite layers, consisting of ...
Best results for 2015
“Enhanced efficiency of organic solar cells based on diketopyrrolopyrrole dye by treating the active layers with solvent vapors, coordinator – assoc. prof. Dr I. Zhivkov.
Тhe influence of different solvents vapors on the structure and properties of thin composite layers, consisting of diketopyrrolopyrrole dye (DPP(TBFu)2) as electron donor (D) and soluble fullerene derivative (PC60BM) as acceptor (A) is followed. It is established that after only 4 seconds treatment of the active D/A layers with tetrahydrofuran (THF) vapors leads to a significant increase (7 times) of the efficiency of the constructed bulk heterojunction solar cells. The results from TEM, AFM and impedance analyses performed show that the solvent vapor treatment leads to a pronounced vertical segregation of the components in the composite layer with emersion of the fullerene derivative to the cathode of the solar cell, which changes its shunt resistance. More prolonged treatment duration causes formation of large acceptor crystallites and decrease of the diketopyrrolopyrrole concentration at the cathode, which negatively affected the solar cell efficiency.
The investigations are performed in the frame of Scientific exchange program “Erasmus +” in the Materials Research Centre, Faculty of Chemistry, Brno University of Technology, Brno, Czech Republic. The results are published in: Kovalenko, A, Stoyanova, D, Pospisil, J, Zhivkov, I, Fekete, L, Karashanova, D, Kratochvílová, I, Vala, M, Weiter, M., “Morphology versus Vertical Phase Segregation in Solvent Annealed Small Molecule Bulk Heterojunction Organic Solar Cells”, International Journal of Photoenergy, 2015 article ID 238981 (8 pages), 2015