Physical Science International Journal

In this article, the physical properties of cotton fibers sort of "Surkhon-104" with thermal treatment were studied. The main results of the research are as follows. The electrophysical and photoelectrical properties of cotton fibers doped with KMnO₄ were studied. The research was carried out in the temperature range of 300-360 K and voltage in the range of 0-100 V. Temperature dependence of electrical conductivity of cotton fibers was studied. It was proved that the current flowing from all samples prepared as a research object obeys Ohm's law. It was found that the photoconductivity caused by ultraviolet and visible light in the cotton fibers sample is mainly related to the formation of inter-zone electron-hole pairs. it was found that the electrical conductivity increased significantly due to the photogeneration of charge carriers. The long-term relaxation of photoconductivity was determined, which is related to the localization of electrons to E_t2=E_c-1,5 eV levels.