Akademik Veri Yönetim Sistemi
International Journal on Technical and Physical Problems of Engineering, cilt.15, sa.3, ss.53-58, 2023 (Scopus)
In this research the photoelectric properties of multiwall carbon nanotubes were studied. The spectral dependencies of photosensitivity for gadolinium-doped multiwall carbon nanotubes (Gd 10%) were investigated. The spectral characteristics for gadolinium-doped multiwall carbon nanotubes have been measured at the wavelength range from 400 nm to 900 nm under the applied voltage from 1 to 9 V. The voltage of 3V leads to the appearance of the highest sensitivity value at a wavelength λ~480 nm and the most significant photocurrent peak equal to Ip~0.158 μA. Approximately the same peak value is observed at a wavelength of λ~540 nm. Using U=5V leads to a decrease and loss of photosensitivity. The widest photosensitivity range is observed at a voltage of U=1 V. Using this voltage value can be effective for detector applications. Experimental data and plotted I-V characteristics are presented for six wavelengths from the 640-880 nm spectral range. Based on I-V curves, the weak photosensitivity for any voltage from 1 to 9 V at λ~640 nm was registered. The increasing wavelengths λ~720, 760, 780, and 880 nm lead to an increase in the photocurrent value. The voltage value equal to 7 V leads to the photosensitivity maximum. The results are promising for the accessible and cost-effective fabrication of Gd-doped MWCNTs for detector and optoelectronic devices.