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Title: Ytterbium induced structural phase transitions and their effects on the optical and electrical properties of ZnPc thin films
Authors: Qasrawi, Atef$AAUP$Palestinian
Zyoud, Hadeel$AAUP$Palestinian
Keywords: Yb/ZnPC · X-ray diffraction · Phase transition · Light absorbability · Negative capacitance
Issue Date: 26-Oct-2020
Publisher: Optical and Quantum Electronics
Series/Report no.: 0306-8919;
Abstract: 1000 nm (Yb-1000) on the structural, optical and electrical properties of zinc phthalocyanine (ZnPc) are investigated. While the Yb-150/ZnPc exhibited strained monoclinic structure, the Yb-1000/ZnPc thin films are observed to exhibit phase transitions from monoclinic to triclinic structure. Analysis which targeted observatories of the effects of the Yb-150 substrate on the optical properties indicated that the transparent Yb-150 substrate enhanced the light absorbability by more than 11 times at 1.27 eV. On the other hand, the impedance spectroscopy measurements on the nontransparent Yb-1000/ZnPc/Ag sandwiched structures have shown that these devices could exhibit negative capacitance (NC) effect in the frequency domain of 0.244–1.800 GHz. The NC effect is associated with resonance-anti-resonance response at 0.235 and 0.244 GHz, respectively. The structural, optical and electrical properties of the Yb/ZnPc interfaces indicate its applicability as optoelectronic and/or radio/microwave components.
Appears in Collections:Faculty & Staff Scientific Research publications

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