last update: 09 feb. 2005

Volume 7, No. 1, 2005 - full papers

Content:               

 

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-WO3 films 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 As2S1.5Se1.5Gex

D. Platikanova, D. Arsova, E. Skordeva
55

Photoinduced changes in the valence band states of geXAs40-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 GexSb40-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 LaBa2Cu3O7-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 Pr1-xCaxMnO3 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 Pb2ScTaxNb1-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 Y1Ba2Cu3Oz and Y0.7 Ca0.3Ba2Cu3Oz 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-Fourcadea, V. Pamukchieva