Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
Permanent URI for this collectionhttps://hdl.handle.net/11147/7148
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Article Citation - WoS: 25Citation - Scopus: 26Solution Processable Neutral State Colourless Electrochromic Devices: Effect of the Layer Thickness on the Electrochromic Performance(Royal Society of Chemistry, 2016) Tahtalı, Gürhan; Has, Zeynep; Doyranlı, Ceylan; Varlıklı, Canan; Koyuncu, SermetIn this study, a neutral state colourless electrochromic device fabricated through a solution process is introduced. The device contains indium doped transparent oxide coated glass as the transparent conductive electrode, poly(N-(2-ethylhexyl)carbazol-3,6-diyl) (PCbz) as the anodically colouring material, poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) as the ion storage layer and a lithium perchlorate based conducting gel electrolyte. A maximum optical contrast (ΔT%) of 58% at 800 nm is achieved by optimizing the film thickness of both the organic layers. The device that has layers of 220 nm PCbz and 120 nm PEDOT:PSS thickness revealed a high coloration efficiency (1246 cm2 C-1) and colouring and bleaching response times of 5.6 s and 2.3 s, respectively.Article Citation - WoS: 11Citation - Scopus: 12Hydrothermal Synthesis, Characterization and Magnetic Properties of Navge2o6 and Livge2o6(Elsevier Ltd., 2004) Eanes, Mehtap; Kolis, Joseph W.Supercritical fluids are shown to be an excellent reaction media for the synthesis of novel solid state phases at intermediate temperatures. LiVGe 2O6 and NaVGe2O6 have the common pyroxene structure composed of VO6 linear chains. NaVGe 2O6 crystallizes in the monoclinic space group C2/c with four formula units having cell dimensions a = 9.960(4)Å, b = 8.853(10)Å, c = 5.4861(10)Å, β = 106.403(3)°. The structure was refined until R = 0.0290 and Rw = 0.0370. For LiVGe 2O6 in space group P21/c: a = 9.8508(7)Å, b = 8.754(3)Å, c = 5.3948(13)Å, β = 108(3)°, R = 0.0240 and Rw = 0.0250. The compounds contain edge-shared VO6 octahedral chains and corner-shared GeO4 tetrahedral chains. The presence of these VO6 chains results in spin-Peierls distortion. Structural and physical characterization of the compounds are reported.