Investigation of morphology, a.c. electrical and optical properties of nanostructured thin film of polypyrrole–bromoaluminium phthalocyanine
Tóm tắt
In this research, nanocomposite polypyrrole (PPy) + 30 % bromoaluminium phthalocyanine (BrAlPc) was prepared in our laboratory. Optical absorption and field emission scanning electron microscopy characterized the thin films. The powder of nanocomposite was characterized by X-ray diffraction. The nanocomposite PPy + 30 % BrAlPc thin film deposited on pre-cleaned glass substrate with a thickness of 100 nm, which was deposited in a high vacuum device of electron-beam gun in the pressure of 10−5 mbar. The capacitance and the dissipation factor were measured in a.c. electrical and in the range of 102–105 Hz frequency and 303–413 K temperatures. The nanoparticles are spherical in shape with an average size about 25–37 nm. Their UV–Vis spectra of the nanocomposite (PPy + 30 % BrAlPc) is typically described by two strong Q and Soret bands 600–700 and 300–400 nm. The results showed a sharp diffraction peak appeared in 2θ = 8.72 (d = 10.1296 Å) and grian size D = 8.991 nm. The results can be described by the theory of Goswami–Goswami for sandwich devices.
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