Journal
OPTICAL MATERIALS
Volume 138, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.optmat.2023.113709
Keywords
Phthalocyanine; Copper phthalocyanine; I -V characteristics; Negative differential resistance; Photovoltaic properties
Categories
Ask authors/readers for more resources
A copper(II) phthalocyanine with a tetrachalcone substitution was synthesized through cyclotetramerization of phthalonitrile using anhydrous CuCl2. The resulting CuPc was thermally coated on WOx thin films to form an In/WOx/CuPc/In heterojunction. The thin film surface was characterized using SEM and EDX, while XRD was used to determine the crystal structure. I-V plots under dark and various illumination levels showed that the heterojunction exhibited photovoltaic properties. The heterojunction also showed negative differential resistance (NDR) characteristics and self-powered photodiode behaviors.
A peripherally tetrachalcone substituted copper(II) phthalocyanine was achieved by cyclotetramerization of the phthalonitrile in the presence of anhydrous CuCl2. The modified CuPc was thermally coated on WOx thin films from which a In/WOx/CuPc/In heterojunction was obtained. The surface of the thin films was investigated using scanning electron microscopy (SEM), where energy dispersive X-ray spectra (EDX) was used to confirm chemical structure. The crystal structures of the thin films were characterized using X-ray diffractometry (XRD). To determine the photovoltaic properties of the heterojunction, I-V plots were obtained under dark and various levels of illumination. It was seen that the heterojunction was responsive to the external light. Using the I-V plots, different diode parameters such as ideality factor, barrier height, series resistance, etc., were calculated. These plots also revealed that the In/WOx/CuPc/In heterojunction exhibits negative differential resistance (NDR) characteristics. Photodiode characteristics indicate that the heterojunction exhibits self-powered photodiode behaviours. It was seen that In/WOx/CuPc/In heterojunctions are sensitive to the external light that photovoltaic characteristics alter when the light intensity alters. However, no clear relation between the light intensity and photovoltaic characteristics were evidenced.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available