کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5448726 1511946 2017 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Coexistence of positive and negative photoconductivity in nickel oxide decorated multiwall carbon nanotubes
ترجمه فارسی عنوان
همسو بودن نوردهی مثبت و منفی در نانولوله های کربنی چند منظوره تزئین شده با اکسید نیکل
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
چکیده انگلیسی
Within this work was explored the influence of nickel oxide decoration on the photoconductive effects exhibited by multiwall carbon nanotubes. Samples in thin film form were prepared by a chemical vapor deposition method. Experiments for evaluating the photo-response of the nanomaterials at 532 nanometers wavelength were undertaken. A contrasting behavior in the photoelectrical characteristics of the decorated nanostructures was analyzed. The decoration technique allowed us to control a decrease in photoconduction of the sample from approximately 100 μmhos/cm to −600 μmhos/cm. Two-wave mixing experiments confirmed an enhancement in nanosecond nonlinearities derived by nickel oxide contributions. It was considered that metallic nanoparticles present a strong responsibility for the evolution of the optoelectronic phenomena in metal/carbon nanohybrids. Impedance spectroscopy explorations indicated that a capacitive behavior correspond to the samples. A potential development of high-sensitive Wheatstone bridge sensors based on the optoelectrical performance of the studied samples was proposed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: B - Volume 220, June 2017, Pages 22-29
نویسندگان
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