Zobrazeno 1 - 10
of 101
pro vyhledávání: '"S. Sakkopoulos"'
Publikováno v:
Materials Today: Proceedings. 2:4217-4222
Despite the high electrical conductivity of optically transparent organic semiconductor films, their structural and electrical heterogeneity induces capacitance effects. Broadband Dielectric Spectroscopy (BDS) is employed in order to investigate two
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1ccc0066dc6a744b273ec2c1870554ea
https://doi.org/10.1016/j.matpr.2015.09.006
https://doi.org/10.1016/j.matpr.2015.09.006
Publikováno v:
Journal of Surfaces and Interfaces of Materials. 2:328-333
Department of Chemistry, University of Patras, GR-26500 Patras, GreeceSamples of conducting nanocomposites of polyaniline (PANI) and polypyrrole (PPy) with zeoliteconcentrations from 0 to 50% w/w and ZnO from 0 to 40% w/w were synthesized through oxi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1d843944954d982449405fab29c78541
https://doi.org/10.1166/jsim.2014.1066
https://doi.org/10.1166/jsim.2014.1066
Autor:
S. Sakkopoulos, Evangelos Vitoratos
Publikováno v:
Open Journal of Organic Polymer Materials. :1-5
The conductivity difference Δσ between two similar PEDOT:PSS films, 120 nm thick, heated by 5 and 15 K/min from 80 to 440 K, the one under inert He and the other under ambient air gives an approximate measure of the influence of oxygen and moisture
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a6b18ba000f7472a45fbbb114fb847e1
https://doi.org/10.4236/ojopm.2014.41001
https://doi.org/10.4236/ojopm.2014.41001
Publikováno v:
Applied Physics Letters. 114:162904
Broadband Dielectric Spectroscopy (BDS) measurements of P{\omicron}lyaniline/Graphene oxide composites were conducted for an as-prepared and a thermally annealed specimen, respectively, from 15K to room temperature. Electrical conductivity values of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a112214c6468888624ca47eb35928472
https://doi.org/10.1063/1.5089814
https://doi.org/10.1063/1.5089814
Autor:
Stelios A. Choulis, Evangelos Vitoratos, Konstantinos Emmanouil, S. Sakkopoulos, Nikolaos Paliatsas
Publikováno v:
Open Journal of Organic Polymer Materials. :7-11
PEDOT:PSS buffer layers have been processed with the standard annealing step used for organic solar cells device applications. The d.c. conductivity σ as a function of temperature for two heating rates under He and atmospheric air was studied. Moreo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::15908e44b4257180342642c9f2914dca
https://doi.org/10.4236/ojopm.2012.21002
https://doi.org/10.4236/ojopm.2012.21002
D.C. conductivity and thermal aging of conducting zeolite/polyaniline and zeolite/polypyrrole blends
Publikováno v:
Current Applied Physics. 7:578-581
The d.c. conductivity σ of zeolite/polyaniline (PANI) and zeolite/polypyrrole (PPy) blends of various concentrations in zeolite was measured from 80 to 320 K. Moreover, the thermal degradation of σ was studied by heating the blends at 70 °C under
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::353a5b23a2e04db76e60deb289c3d342
https://doi.org/10.1016/j.cap.2006.12.001
https://doi.org/10.1016/j.cap.2006.12.001
Autor:
Evangelos Vitoratos, J. Grammatikakis, Anthony N. Papathanassiou, E. Dalas, S. Sakkopoulos, I. Sakellis
Publikováno v:
Synthetic Metals. 150:145-151
The effect of thermal aging of 10–90 wt% zeolite-conducting polypyrrole composite on its dielectric properties is studied in the frequency range 10 −2 to 2 × 10 6 Hz from room temperature to liquid nitrogen temperature. A dielectric relaxation m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6a56e8e85edef0a7714380ea13eed2a1
https://doi.org/10.1016/j.synthmet.2005.01.021
https://doi.org/10.1016/j.synthmet.2005.01.021
Autor:
S. Sakkopoulos, P. Malkaj, N. Kyriakopoulos, Evangelos Vitoratos, Evangelos Dalas, T. Argyreas
Publikováno v:
Journal of Applied Polymer Science. 97:117-122
The dc electrical conductivity (σ) of HCl-protonated polyaniline, polypyrrole, and their blends was measured from 80 to 300 K for thermal aging times between approximately 0 and 600 h. The thermal aging took place at 70°C under room atmosphere. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ede9c327753969abff550c07cf6af8cd
https://doi.org/10.1002/app.21738
https://doi.org/10.1002/app.21738
Autor:
S. Sakkopoulos, I. Sakellis, J. Grammatikakis, Evangelos Vitoratos, Anthony N. Papathanassiou, Evangelos Dalas
Publikováno v:
Journal of Applied Physics. 96:3883-3888
The dielectric properties of polypyrrole-zeolite composites up to 50%w∕w zeolite are studied in the frequency range from 10−2to2×106Hz from room temperature to liquid nitrogen temperature. The complex permittivity formalism reveals a temperature
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c94ebddb07f15f98f264b384fe582756
https://doi.org/10.1063/1.1788846
https://doi.org/10.1063/1.1788846
Publikováno v:
Journal of Power Sources. 128:319-325
The ability of zeolite to accommodate and neutralize a great number of cations with all three mechanisms, adsorption, intercalation, and cation exchange reaction, combined with the high conductivity and stability of HCl—protonated polyaniline, whic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e6a36fcdb9df14c2660081c51181c2e6
https://doi.org/10.1016/j.jpowsour.2003.09.062
https://doi.org/10.1016/j.jpowsour.2003.09.062