Vol7, No1, February 2005

	Georgi Nadjakoff Memorial Lecture
1	The impact of the electron spin on charge carrier recombination – the example of amorphous silicon	K. Lips, C. Boehme, T. Ehara
	Milko Borisov Memorial Lecture
2	The opening-up of lipid bilayer vesicles by guest molecules: the adsorption isotherm and numerical calculations	Y. Suezaki, T. Umeda
	Invited Papers
3	Nanostructured and nanoscale devices and sensors	A. Vaseashta, J. Irudayaraj
4	Hopping transport in an isoenergetic spatially-random array of sites – the effect of jumps into distant sites	J. M. Marshall, V. Arkhipov
5	Eelectronic structure and properties of nitride semiconductor compound alloys	D. Alexandrov
6	Light-induced volume changes in amorphous selenium. molecular dynamics simulation; sample preparation and excitation	J. Hegedus, K. Kohary, S. Kugler
7	Application of SC-simul – numerical simulation for thin-film silicon based devices	R. Brüggemann, M. Rösch
8	Electronic properties of hydrogenated amorphous silicon prepared in expanding thermal plasmas	M. Brinza, G. J. Adriaenssens
9	Instability phenomena in microcrystalline silicon films	F. Finger, R. Carius, T. Dylla, S. Klein, S. Okur, M. Günes
10	Transport and instabilities in microcrystalline silicon films	S. Reynolds, V. Smirnov, F. Finger, C. Main, R. Carius
11	Polycrystalline Si films prepared by Al- and Ni- induced crystallisation	D. Dimova-Malinovska
12	Computer modelling of multi-trapping and hopping transport in disordered semiconductors	C. Main, J. M. Marshall, S. Reynolds
13	On the theoretical description of photoluminescence in disordered quantum structures	O. Rubel, S. D. Baranovskii, K. Hantke, J. D. Heber, J. Koch, P. Thomas, J. M. Marshall, W. Stolz, W. W. Rühle
14	Band tail states in microcrystallline silicon solar cells probed by photoluminenscence and open circuit voltage	R. Carius, T. Merdzhanova, S. Klein, F. Finger
15	Radiative lifetime and spontaneous emission in amorphous semiconductors	J. Singh
16	Mechanism of photoluminescence in hydrogenated amorphous silicon determined by wide-band quadrature frequency-resolved spectroscopy (Qfrs)	T. Aoki, T. Shimizu, D. Saito, K. Ikeda
17	Photoinduced fluidity enhanced by electric field in amorphous chalcogenides	K. Shimakawa (Ovshinsky Award Laureate, 2003)
18	Kinetics of optically- and thermally-induced diffusion and dissolution of silver in PLD As₄₀S₆₀ amorphous films: their properties and structure	T. Wágner, M. Krbal, J. Jedelský, Mil. Vlček, B. Frumarová, M. Frumar
19	Sub-bandgap absorption spectroscopy and minority carrier transport properties of hydrogenated microcrystalline silicon thin films	M. Güneş, O. Göktaş, S. Okur, N. Işık, R. Carius, J. Klomfass, F. Finger
20	Optoelectronic properties of CVD MoO₃ and MoO₃-WO₃films and their applications in electrochromic cells	K. A. Gesheva, T. Ivanova,G. Popkirov, F. Hamelmann
21	Mössbauer spectroscopy as a powerful tool to study local electronic structure	J. C. Jumas, F. Robert, L. Aldon, E. Skordeva
22	Raman scattering from semiconductor nanoparticles and superlattices	D. Nesheva
23	State-of-the-art of focused ion beam nanolithography	K. Arshak, M. Mihov
24	Anisotropic- magnetoresistance integrated sensors	S. Andreev, P. Dimitrova
25	F-colour centers and lithium nano-clusters in ion-beam assisted LiF thin films	S. Scaglione, R. M. Montereali , V. Mussi , E. Nichelatti
26	Neutron incoherent scattering of rotational and transitional dynamics in anisotropic systems – a new theoretical approach	N. Kirov, J. Jordanova, G. B. Hadjichristov
27	Polysilanes – advanced materials for optoelectronics	S. Nešpůrek, G. Wang, K. Yoshino
28	High-current pulsed arc preparation of carbon and metal-carbon nanoparticles	S. Muhl, F. Maya, S. Rodil, G. Gonzalez E. Camps, L. Escobar-Alarcon, M. Espinosa-Pesqueira
	Posters
29	Corona electrets obtained in different gas media	T. Yovcheva, G. Mekishev, St. Nedev
30	Incorporating of colored azoderivates in hybrid materices	Y. Ivanova, H. Hristov, Sn. Handjieva, Ch. Petkov
31	Space-charge effects in vacuum deposited polyimide layers	I. Zhivkov, V. Strijkova, E. Spassova, G. Danev, S. Nešpůrek, M. Iwamoto
32	Soft plasma treatment of polymer surfaces	S. Kitova, M. Minchev, G. Danev
33	Kinetics of the photochromic reaction in a polymer containing azobenzene groups	I. Mancheva, I. Zhivkov, S. Nešpůrek
34	Stroboscopic illumination gives new opportunities and improves the precision of bending elastic modulus measurements	J. Genova, V. Vitkova, L. Aladjem, P. Méléard, M. Mitov
35	Tumbling of lipid vesicles, enclosing a viscous fluid, under a shear flow	V. Vitkova, M. Mader, T. Biben, T. Podgorski
36	Surface orientation of smectics C and nematic with short range smectic C order using a holographic diffraction grating	B. Katranchev, M. Petrov
37	Surfactant desorption in homeotropic nematic layers studied by flexoelectric spectroscopy	L. Todorova, Y. Marinov, I. Maslyanitsyn, S. Torgova, A. G. Petrov
38	The role of hydrogen bonding for initiation of chirality, dendrites and physical gel in nematics with short range smectic C order	B. Katranchev, H. Naradikian, M. Petrov
39	Longitudinal flexoelectric domains in BMAOB nematic layers under the joint action of dc and ac voltages	Y. Marinov, H. P. Hinov, A. G. Petrov
40	High temperature formation of polymer – dispersed hydrogen bonded liquid crystals	T. Angelov, B. Katranchev, M. Petrov
41	Temperature dependence of chromaticity in polymer-dispersed cholesteric liquid crystal: reflection and transmission characteristics	P. Pavlova, L. Avramov, H. Naradikian, T. Angelov, A. G. Petrov
42	constant photocurrent measurement of the subgap absorption in polymer blends	J. Willekens, T. Aernouts, G. J. Adriaenssens, J. Poortmans
43	The effects of oxide thickness on the interface and oxide properties of metal-tantalum pentoxide-si (mos) capacitors	P. Ozdag, E. Atanassova, M. Gunes
44	Properties of reactive O₂ ion beam sputtered TiO₂ on Si wafers	S. Ulucan, G. Aygun, L. Ozyuzer, M. Egilmez, R. Turan
45	Analytical solution of a percolation model for charge decay on surfaces	P. Bozsoki, S. D. Baranovskii, P. Thomas, T. A. Yovcheva, G. A. Mekishev
46	On the determination of the optical constants of very thin (l/50) films	P. Gushterova, P. Sharlandjiev, B. Schmidt, M. Pham
47	On ‘extraordinary optical transmission’ from periodic and random nanostructures	P. Sharlandjiev, D. Nazarova, B. Mednikarov, M. Pham
48	Characteristics of polysilicon TFTs, hydrogenated by ion implantation p-channel	P. Aleksandrova, V. Gueorguiev, Tz. Ivanov, L. Popova
49	Magnetic properties of thin film AMR sensor structures implemented by magnetization after annealing	S. Andreev, J. Koprinarova, P. Dimitrova
50	Study and analisys of degradation processes in the electronic equipment operating at kozloduy NPP	A. Popov, N. Naydenov
51	Infrared spectroscopy study of Si-SiO₂ structures irradiated with high-energy electrons	I. P. Lisovskyy, V. G. Litovchenko, D. O. Mazunov, S. Kaschieva, J. Koprinarova, S. N. Dmitriev
52	Experimental study of the density of states in the band gap of a-Se	M. L. Benkhedir, M. S. Aida, N. Qamhieh, A. Stesmans, G. J. Adriaenssens
53	Optical properties and thermal stability of Er-doped As-Se (Te, S)-Ge-Ga glasses for photonics	D. Tonchev, K. Koughia, M. Munzar, T. Sakai, K. Maeda, S. O. Kasap
54	Photo- and thermoinduced changes in As₂S_1.5Se_1.5Ge_x	D. Platikanova, D. Arsova, E. Skordeva
55	Photoinduced changes in the valence band states of ge_XAs_40-XS₆₀ thin films	D. Gonbeau, V. Pamukchieva, R. Dedryvere, E. Skordeva, D. Arsova
56	Low-temperature luminescence quenching and local ordering study of Er-doped Ge-S-Ga glasses	Z. G. Ivanova, R. Ganesan, K. V. Adarsh, V. S. Vassilev, Z. Aneva, Z. Cernosek, E. S. R. Gopal
57	Photoluminescence of Er³⁺ ions in (GeS₂)₈₀(Ga₂S₃)₂₀ glasses	Z. G. Ivanova, K. Koughia, Z. Aneva, D. Tonchev, V. S. Vassilev, S. O. Kasap
58	Characterization of heat – and photo – annealed Ge_xSb_40-xS₆₀ films by X-ray photoelectron spectroscopy	R. K. Debnath, A. G. Fitzgerald, K. Christova, A. Manov
59	Low-temperature thermal properties of Ge-As-S glasses	E. Vateva, B. Terziyska, H. Misiorek, A. Jeżowski, D. Wlosewicz, D. Arsova
60	Potoinduced scalar and vector effects in obliquely deposited a-As₂S₃ thin films	J. Dikova, Tz. Babeva, P. Sharlandjiev
61	Significance of the intramolecular degrees of freedom on the glass-forming process	H. Solunov
62	AFM and SEM investigations of ion beamsynthesized Mg₂Si precipitates in Si substrates	Ch. Angelov, V. Mikli, B. Amov, E. Goranova
63	Properties of the SiC/Si structure prepared by rapid thermal annealing of amorphous hydrogenated carbon layers deposited on crystaline silicon	S. S. Georgiev, G. Beshkov, D. Sueva, E. Manolov
64	Effect of rapid thermal annealing on the properties of mPCVD and PECVD silicon nitride thin films	V. Bakardjieva, G. Beshkov, P. Vitanov, Z. Alexieva
65	AlN films obtained by a broad energy nitrogen ion implantation and rapid thermal annealing process	K. G. Grigorov, I. Nedkov, G. Beshkov, Ch. Angelov, H. S. Maciel, W. Matz, R. Groetzchel, N. Velchev
66	Properties of Cr and Mo thin films deposited by RF sputtering	Ch. Dikov, M. Marinov, H. Maciel, K. Grigorov, I. Nedkov, G. Beshkov
67	Deposition of silicon oxide thin films in TEOS with addition of oxygen to the plasma ambient: IR spectra analysis	F. Hamelmann, U. Heinzmann, A. Szekeres, N. Kirov, T. Nikolova
68	Optical and electrochromic characterization of multilayered mixed metal oxide thin films	F. Hamelmann, K. Gesheva, T. Ivanova, A. Szekeres, M. Abrashev, U. Heinzmann
69	Microheterogeneous structure of melted and gel glasses in the system PbO-B₂O₃	E. Kashchieva, V. Ivanova, B. Tasseva, Y. Ivanova, Y. Dimitriev
70	The influence of Cu on the morphological and chemical properties of nanostructured Tio₂ films	M. Gartner, A. Ghita, M. Anastasescu, P. Osiceanu,G. Dobrescu, M. Zaharescu, D. Macovei, M. Modreanu, C. Trapalis, G. Kordas
71	Fabrication of superconducting MgB₂ from boron oxide (B₂O₃), and its microstructural and electrical characterization	M. Yavas, S. Okur, M. Egilmez, M. Kalkanci, L. Ozyuzer
72	Microstructural and electrical characterization of Ti and Mg doped Cu-clad MgB₂ superconducting wires	S. Okur, M. Kalkanci, M. Yavas, M. Egilmez, L. Ozyuzer
73	Fabrication of array of mesas on superconducting Bi₂Sr₂CaCu₂O₈₊_d single crystals	C. Kurter, L. Ozyuzer
74	Classification of hiogh-temperature superconducting YBCO thin films by fuzzy clustering	P. Simeonova, V. Lovchinov
75	Superconducting nanostructured magnesium diboride	K. Kalaydjiev, V. Lovchinov, D. Dimitrov, M. Kirov, M. Baychev, Chr. Popov, D. D. Radev, M. Marinov, V. Tumbalev, I. Radev, Ph. Vanderbemden
76	Effect of silver addition on the Superconducting properties of LaBa₂Cu₃O_7-_d ceramics	E. Nazarova, K. Nenkov, A. Angelow, A. Zahariev
77	The influence of Pr-Ca substitution on phase formation, microstructure and oxygen content in YBCO bulk samples	A. Stoyanova-Ivanova, S. Terzieva, K. Zalamova, Ch. Angelov, A. Zahariev, H. Ignatov, V. Kovachev
78	On the low-symmetry orbital phases in Pr_1-xCa_xMnO₃ manganite	E. S. Pisanova, N. S. Tonchev
79	Magneto-optical effect in Bi₄ge₃o₁₂ single crystals doped with vanadium	P. Petkova, V. Marinova, T. Dimov, I. Iliev, M. Gospodinov
80	Dielectric behavior of Sn doped and annealed ferroelectric lead scandium tantalate single crystalas	D. Kaisheva, D. Doshkova, B. Mihailova, M. Gospodinov
81	Crystal growth, structure and dielectric properties of ferroelectric mixed Pb₂ScTa_xNb_1-xO₆ single crystals	D. Doshkova, D. Kaisheva, B. Mihailova, M. Gospodinov
82	Vacuum deposited films of cobalt oxides as electrocatalysts for oxygen reactions	V. Rashkova, S. Kitova, T. Vitanov
83	Structural study of Si samples, beam crystallized using medium energy ion scattering	Ch. Angelov, T. Lohner, M.Takai, A. Kinomura, St. Georgiev
84	Raman spectroscopy on electrochemically doped carbon nanotubes	P. M. Rafailov, C. Thomsen
85	Depth profiles and crystallization behaviour of Mg ions implanted into Si	Ch. Angelov, Bl. Amov, A. Kinomura, E.Goranova, G. Beshkov, M.Takai
86	Patterned surfaces for in vitro hydroxyapatite growth	L. Pramatarova, E. Pecheva, R. Presker, M. Stutzmann, M. Hanzlik
87	A Raman spectroscopic study of defects in Bi₄Ge₃O₁₂ crystals	P. M. Rafailov, T. I. Milenov, M. N. Veleva, C. Thomsen, M. M. Gospodinov
88	Morphology of Y₁Ba₂Cu₃O_z and Y_0.7Ca_0.3Ba₂Cu₃O_z bulk samples depending on Ca – substitution	S. Terzieva, A. Stoyanova-Ivanova, K. Zalamova, V. Mikli, Ch. Angelov, V. Kovache
89	Impact of instability in µc-Si:H i-layers on the performance of solar cells	M. Sendova-Vassileva, F. Finger, S. Klein, A. Lambertz
90	A comparison of model calculations and experimenatl results on the photoluminescence energy and open circuit voltage of µc-Si:H solar cells	T. Merdzhanova, R. Carius, S. Klein, F. Finger, D. Dimova-Malinovska
91	mınorıty carrier properties of microcrystalline silicon thin films grown by HW-CVD and VHF-PECVD techniques	S. Okur, O. Göktaş, M. Güneş, F. Finger, R. Carius
92	Mobility-lifetime products in microcrystalline silicon	R. Brüggemann
93	Photoluminescence of hydrogenated amorphous silicon suboxides	A. Bacıoğlu, A. O. Kodolbaş, Ö. Öktü
94	Lıght ınduced degradatıon of hydrogenated amorphous sılıcon – germanıum alloy (a-SiGe:H) thın fılms	M. E. Dönertaş, M Güneş
95	Density of localized states in hydrogenated amorphous silicon determined by quasistatic capacitance of metal/a-Si:H/SiO₂/c-Si structures	N. Nedev, E. Manolov, Tz. Ivanov, B. Pantchev, G. Beshkov, R. Durny, K. Gmucová, V. Nadazdy
96	Recombination of photoexcited carriers in Bi₁₂TiO₂₀ monocrystals	Z. Aneva, D. Nesheva
97	Effects of thermal annealing and long-term ageing on electronic defects in CdSe thin films	D. Nesheva, S. Reynolds, Z. Aneva, C. Main, Z. Levi
98	Structural defects in gallium arsenide	Ts. Mihailova
99	Electronic states of diffused GaAs/AlGaAs quantum wires	M. Saraydarov, V. Donchev, K. Germanova, K. Kirilov
100	Numerical simulation of the time-resolved Surface photovoltage at Si-SiO₂ interfaces	K. Kirilov, K. Germanova, V. Donchev, Tzv. Ivanov
101	A surface photovoltage spectroscopy system used for minority carrier diffusion length measurements on floating zone silicon	K. Kirilov, V. Donchev, Tsv. Ivanov, K. Germanova, P. Vitanov, P. Ivanov
102	Optical investigation of a Pb₂ScTaO₆ crystal with a room temperature phase transition	Y. Sarov, V. Marinova, M. Gospodinov, S. Sainov
103	Inter-trap tunneling in hydrogen implanted n-si/sio₂ structures	S. Simeonov, A. Gushterov
104	Electrical characterization of MIS structures with sol-gel TiO₂(La) dielectric films	S. Simeonov, E. Kafedjiiska, A. Szekeres, C. Parlog, M. Gartner
105	Phase composition of proton – exhanged waveguides in LiNbO₃: a spectroscopic study	M. Kuneva, S. Tonchev, E. Thatsi, D. Lampakis
106	Electrical properties of plasma-assiated CVD deposited thin silicon oxynitride films	A. Szekeres, S. Simeonov, A. Gushterov, T. Nikolova, F. Hamelmann, U. Heinzmann
107	Thermally induced structural transformations in CVD transition metal oxide thin films	K. Gesheva, A. Cziraki, T. Ivanova, A. Szekeres
108	Nonlinear optical materials: nonlinear refelction in compounds with large permanent dipole moments	G. B. Hadjichristov, N.Kirov
109	Mössbauer study of the degree of disorder in amorphous Ge-Sb-S	E. Skordeva, P. E. Lippens, J. C. Jumas, J. Olivier-Fourcade^a, V. Pamukchieva

P. Pavlova, L. Avramov, H. Naradikian, T. Angelov, A. G. Petrov