Abstract:
In this work, solar cells of conjugate polymer have been designed. The effect of the concentration of different organic dyes on various electrical and optical properties of the samples produced has been studied. The relationship between current and voltage in the curve (I–V) have been obtained. It was found that when the conjugate polymer layer deposition on the slides at low speeds by spin coating technique (increasing the thickness of the conjugate polymer layer), results in higher efficiency of the cells. The use of the organic dye (DDTTCI) led to improve the efficiency and absorption coefficient of light in the samples. In addition, the optical absorption spectra were recorded for those samples with a UV-VIS spectrophotometer (model: UV mini-1240) within the wavelength range of 200–800 nm, at room temperature. The samples showed variations in theabsorption coefficient which depending on the type of organic dye used as well as the concentration of conjugate polymer. The short-circuit current, open circuit voltage and the fill factor of each sample have been calculated. The efficiency was found in the range of 10.28-3.117% for designed samples
