Browsing by Author "Özcan, Şefika"

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Associative behaviour and effect of functional groups on the fluorescence of graphene oxide

Özcan, Şefika; Vempati, Sesha; Çırpan, A.; Uyar, Tamer (Royal Society of Chemistry, 2018)

We have juxtaposed the structural, vibrational and emission properties of graphene oxide (GO) with various degrees of reduction with and without a model dispersant, unveiling a strong associative behavior between GO sheets ...
Graphene oxide-doped PEDOT:PSS as hole transport layer in inverted bulk heterojunction solar cell

Özcan, Şefika; Erer, M. C.; Vempati, S.; Uyar, Tamer; Toppare, L.; Çırpan, A. (Springer, 2020)

Transparent poly (3,4-ethylenedioxythiophene): poly (styrenesulfonate) (PEDOT:PSS) is widely used hole conducting material in optoelectronic devices. Secondary doping of PEDOT:PSS enables the tunability of its electronic ...
Temporary and permanent changes to the defect equilibrium due to ultraviolet exposure: surface and bulk effects on ZnO nanostructures

Vempati, Sesha; Özcan, Şefika; Uyar, Tamer (Elsevier, 2018)

We report on the influence of prolonged exposure of above band gap illumination (UV) on the surface electronic structure (core and valence band) and bulk defect equilibrium of ZnO nanorods. We investigated two samples (ZnO1 ...