Annual Report 2012 - Latvijas Universitātes Cietvielu fizikas institūts

More documents

Recommendations

Info

investigated compounds in dilute dichloromethane solution (black lines) and neat films (gray lines). Figure 5. Full width at half maximum (circles) and ASE intensity (squares) as a function of irradiation intensity for DWK-1, DWK-2, JWK-1, ZWK-1 compounds in thin solid film. Lines are guides for the eye. The possibility of achieving amplified spontaneous emission in neat films of the glass forming DCM derivatives bearing bulky side groups demonstrates their applicability for the lasing applications despite a very low fluorescence quantum yield. However, a low fluorescence quantum yield caused by short excited state lifetimes of the molecules in films sets limitations on their applications. Such materials may be used for amplification or generation of short light pulses under their excitation with also short light pulses. However, these materials are not suitable for OLED fabrication or lasing under continuum wave excitation conditions. All DCM derivatives bearing one donor group and different acceptor groups show similar spectroscopic and light amplification properties Attachment of two bulky donor groups negatively affects the light amplification properties of the compounds both in solutions and in neat solid films. This negative influence is less expressed for DWK-2 compound, which shows light amplification properties similar to those of DWK-1 compound. Amplification properties of two other compounds ZWK-2 and JWK-2 revealed by transient absorption investigations are much worse; consequently amplified spontaneous emission in neat films of these materials has not been achieved. Scientific publications 1. E. Nitiss, M. Rutkis, M. Svilans, Effects of the multiple internal reflection and sample thickness changes on determination if electro-optica coefficient values of a polymer film, Lithuanian Journal of Physics, Vol. 52, No. 1, pp. 30-38 (2012) 2. A.Vembris, E.Zarins, J.Jubels, V.Kokars, I.Muzikante, A.Miasojedovas, S.Jursenas, Synthesis, thermal and optical properties of red luminescent glass forming symmetric and non symmetric styryl-4H-pyran-4-ylidene fragment containing derivatives, Optical Materials, 34, 2012, pp 1501 – 1506, doi: 10.1016/j.optmat.2012.02.051 3. A.Vembris, I.Muzikante, V.Gulbinas, R.Karpicz, G.Sliauzys, A.Miasojedovas, S.Jursenas, Fluorescence and amplified spontaneous emission properties of glass forming styryl-4H-pyran-4-ylidene fragment containing derivatives, Journal of Luminescence, 132, No 9, 2012, pp 2421–2426, doi: 10.1016/j.jlumin.2012.03.063 4. V.Karitans, K.Kundzins, E.Laizane, M.Ozolinsh, L.Ekimane, Applicability of a binary amplitude mask for creating correctors of higher-order ocular aberrations in a photoresistive layer, Optical Engineering, Vol. 51, No. 7, 2012, pp. 078001 5. E. Nitišs, R. Usans, M. Rutkis, Simple method for measuring bilayer system optical parameters, SPIE Proceedings, 8430, 84301C (2012), DOI: 10.1117/12.922317 6. E. Zarins, K. Siltane, E. Misina, V. Kokars, K. Lazdovica, A. Vembris, V. Kampars, I. Muzikante, M. Rutkis, Synthesis, optical and thermal properties of glassy trityl group containing luminescent derivatives of 2-tert-butyl-6-methyl-4H-pyran-4-one, SPIE Proceedings, 8435, 84351Q, (2012), DOI: 10.1117/12.921996 116
7. A. Vembris, K. Pudzs, I. Muzikante, Light emitting thin films of glassy forming organic compounds containing 2-tert-butyl-6-methyl-4H-pyran-4-ylidene, SPIE Proceedings, 8435, 843527, (2012), DOI: 10.1117/12.922694 8. K. Traskovskis, I. Mihailovs, A. Tokmakovs, V. Kokars, M. Rutkis, An improved molecular design of obtaining NLO active molecular glasses using triphenyl moieties as amorphous phase formation enhancers, SPIE Proceedings, 8434, 84341P, (2012), DOI: 10.1117/12.922391 9. K. Traskovskis, I. Mihailovs, A. Tokmakovs, A. Jurgis, V. Kokars, M. Rutkis, Triphenyl moieties as building blocks for obtaining molecular glasses with nonlinear optical activity, J. Mater. Chem., 2012,22, 11268-11276, DOI: 10.1039/C2JM30861D 10. O.Vilitis, I. Muzikante, M.Rutkis, A. Vembris, Chromophore poling in thin films of organic glasses. 2. Two-electrode corona discharge setup, Latvian Journal of Physics and Technical Sciences, 2012, No. 2, pp. 62-70; DOI: 10.2478/v10047-012- 0013-5 11. A Tokmakovs, M Rutkis, K Traskovskis, E Zarins, L Laipniece, V Kokars, V Kampars, Nonlinear optical properties of low molecular organic glasses formed by triphenyl modified chromophores, IOP Conf. Series: Materials Science and Engineering 38 (2012) 012034, doi:10.1088/1757-899X/38/1/012034 12. I Mihailovs, J Kreicberga, V Kampars, S Miasojedovas, S Juršėnas, L Skuja, M Rutkis, Hyper-Rayleigh scattering and two-photon luminescence of phenylamine– indandione chromophores, IOP Conf. Series: Materials Science and Engineering 38 (2012) 012035, doi:10.1088/1757-899X/38/1/012035 13. I. Kaulachs, I. Muzikante, L. Gerca, G. Shlihta, P. Shipkovs, V. Grehovs, J. Kalnachs, M. Roze, G. Rozite, A. Ivanova, Electrodes for GaOHPc:PCBM/P3HT:PCBM bulk heterojunction solar cell, Chemical Physics 405 (2012), 46-51, doi:10.1016/j.chemphys.2012.06.007 Book chapters 1. Elmars Zarins, Aivars Vembris, Valdis Kokars, Inta Muzikante, Synthesis and physical properties of red luminescent glass forming pyranylidene and isophorene fragment containing derivatives, “Organic Light Emitting Devices”,InTech, 2012, 232 Lectures on Conferences 28 th Scientific Conference of the Institute of Solid State Physics, University of Latvia, February 8-10, 2012: 1. Santa Popova, Aivars Vembris, Inta Muzikante, Electroluminescence properties of organic compounds in amorphous state, Book of Abstracts, p.67 2. K.Pudzs, I.Muzikante, M.Rutkis, J.V.Grazulevicius, R.Reghu, Study of elektrical properties of thin film of perylene derivatives, Book of Abstracts, p.65 3. R.Gržibovskis, I.Muzikante, J.Latvels, B.Turovska, P.J.Pastors, V.Kampars, , Photoconductivity processes in polycrystalline films of DMABI derivatives, Book of Abstracts, p.66 4. E.Titavs, E.Nitišs, M.Rutkis, Study of internal structure of thin polymer layers after poling with corona triode, Book of Abstracts, p.23 117
Page 1 and 2:
Institute of Solid State Physics Un
Page 3 and 4:
CONTENTS Introduction 4 Department
Page 5 and 6:
ORGANIZATIONAL STUCTURE OF THE ISSP
Page 7 and 8:
The annual report summarizes the re
Page 9 and 10:
The main source for international f
Page 11 and 12:
lector at the Faculty of Physics an
Page 13 and 14:
the samples having different phase
Page 15 and 16:
LABORATORY OF MAGNETIC RESONANCE SP
Page 17 and 18:
Scientific publications 1. U. Rogul
Page 19 and 20:
Main investigations and results ALU
Page 21 and 22:
Lectures on Conferences 28 th LU Sc
Page 23 and 24:
Main Results LASER CRYSTALLIZATION
Page 25 and 26:
CONTROLLED MANIPULATION AND MECHANI
Page 27 and 28:
DEPARTMENT OF FERROELECTRICS Head o
Page 29 and 30:
Belorussia 1. Institute of solid st
Page 31 and 32:
Density and dielectric properties f
Page 33 and 34:
CONCENTRATION AND THERMAL PHASE TRA
Page 35 and 36:
Latvia; SSPA ”Scientific-Practica
Page 37 and 38:
• Δ T εmax : Mn>Co>Fe>Cu~Ni •
Page 39 and 40:
Li x Na 1-x Ta y Nb 1-y O 3 Solid S
Page 41 and 42:
34. А.И. Бурханов, И.Е.
Page 43 and 44:
16. Š. Svirskas, M. Ivanov, Š. Ba
Page 45 and 46:
45. С.Н. Каллаев, А.Р.
Page 47 and 48:
LABORATORY OF VISUAL PERCEPTION Hea
Page 49 and 50:
in terms of colour coordinate dispe
Page 51 and 52:
4. R.Truksa, S.Fomins, M.Ozolins, "
Page 53 and 54:
Scientific visits abroad 1. Dr. hab
Page 55 and 56:
experimental data. We focused on th
Page 57 and 58:
GB1 with oxygen vacancy revealed th
Page 59 and 60:
Fig. 4. The thermodynamic stability
Page 61 and 62:
a supercell model was used, and the
Page 63 and 64:
a) b) l [110] d [110] (001) Fig. 9.
Page 65 and 66: Drain CNT Source Drain GNR Source 5
Page 67 and 68: The oxygen incorporation energy for
Page 69 and 70: such as high thermal stability, ver
Page 71 and 72: STATISTICAL ANALYSIS AND CELLULAR A
Page 73 and 74: REGIONS OF AZIMUTHAL INSTABILITY IN
Page 75 and 76: 25. A. Gopejenko, Yu.F. Zhukovskii,
Page 77 and 78: 15. S. Piskunov and E. Spohr, "SrTi
Page 79 and 80: 43. P. Merzlakov, G. Zvejnieks, V.N
Page 81 and 82: XII. Annual Monitory Meeting of Eur
Page 83 and 84: 91. L. Shirmane, A.I. Popov, V. Pan
Page 85 and 86: 115. A.I. Popov, J. Zimmermann, V.
Page 87 and 88: Estonia Institute of Physics, Tartu
Page 89 and 90: 5. Grigorjeva L., Jankoviča D., Sm
Page 91 and 92: LABORATORY OF AMORPHOUS MATERIALS S
Page 93 and 94: Main results ABSORPTION AND LUMINES
Page 95 and 96: LUMINESCENCE OF FUSED AND UNFUSED B
Page 97 and 98: enables sensitive and selective det
Page 99 and 100: LABORATORY OF OPTICAL RECORDING Hea
Page 101 and 102: HOLOGRAPHIC LITHOGRAPHY IN AMORPHOU
Page 103 and 104: 5. U.Gertners, J.Teteris, The impac
Page 105 and 106: 24. J.Aleksejeva, J.Teteris, A.Tokm
Page 107 and 108: Israel Technion, Haifa (Dr.S.Stolya
Page 109 and 110: 3. A. Rusakova, J. Maniks, K. Schwa
Page 111 and 112: • Investigation of energetic stru
Page 113 and 114: Scheme 2 Synthesis of indane-1,3-di
Page 115: The synthesized compounds ZWK-1, DW
Page 119 and 120: 20. A. Vembris, K. Pudzs, I. Muzika
Page 121 and 122: • Ion transfer problems related t
Page 123 and 124: 13. SIA „EMU PRIM”, 14. JSC „
Page 125 and 126: Main results Laboratory of Solid St
Page 127 and 128: Flax and Hemp Fiber Functionalizati
Page 129 and 130: CHARACTERIZATION OF LiFePO4/C COMPO
Page 131 and 132: Fig.1. Upper panel: 4 × 4 ×4 supe
Page 133 and 134: Fig.1. Left panel: Schematic view o
Page 135 and 136: Titania with anatase structure is i
Page 137 and 138: RESEARCH OF CATHODE MATERIALS FOR L
Page 139 and 140: 17. T Dizhbite, J Ponomarenko, A An
Page 141 and 142: 6. J. Kleperis, B. Sloka, J. Dimant
Page 143 and 144: 33. P. Lesnicenoks, A. Sivars, L. G
Page 145 and 146: France 1. Institute Laue-Langevin,
Page 147 and 148: different neutron orbits (11/2[615]
Page 149 and 150: LABORATORY OF ELECTRONIC ENGINEERIN
Page 151 and 152: 2. For JSC Augstsprieguma tīkls an
Page 153 and 154: 4. By orders of several organizatio
Page 155: Partners: Fonons Ltd, Riga Technica
show all

Annual Report 2012 - Latvijas Universitātes Cietvielu fizikas institūts

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?