Heterojunction Solar cell(NiPcTs/CdS)organic/inorganic

Abstract

In the present study, thin films of organic semiconductors Nickel PhthalocyanineTetrasulfonic Acid Tetrasodium Salt (NiPcTs) and inorganic semiconductor (CdS) prepared from the mixing of liquids for thesetwomaterials with different size ratios by the spin coating method on pre-patterned (Fluorine-doped Tin Oxide) FTO coated glass substrates and then the manufacture of solar cells. The properties of solar cells the study through the optical properties (absorption spectra, absorption coefficient, power gap) and electrical characteristics (continuous onductivity, Hall Effect and cell efficiency measurements) and Was obtainedThe efficiency of a multiple solar cell ranging from (0.16-13.2 %)

A Study of the Optical Bandgap Energy and Urbach Energy Tail of Two White A4 Copy Paper Samples

“…Urbach has proposed an empirical rule for the optical absorption coefficient α(ω) associated with electronic transition from the valence to the conduction band tail in disordered solids [3]. The relations are examined between E g (band gap energy) and thickness and the tailing in the E g [4]. The increase of band gap energy E g with film thickness is attributed to the improvement of the crystallinity of the material studied when it becomes thicker [5].…”