کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5026016 1470590 2017 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Fabrication and properties of ZnO nanorods based MSM UV detectors on silicon substrates
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
Fabrication and properties of ZnO nanorods based MSM UV detectors on silicon substrates
چکیده انگلیسی
This work reports the ultraviolet (UV) detection characteristics of zinc-oxide (ZnO) nanorods (NR's) based metal-semiconductor-metal (MSM) devices. ZnO NR's were grown on silicon (Si) substrates (p-type) by low-temperature hydrothermal method in two steps. In the first step, approximately 50 nm thick pure ZnO seed-layer was grown on Si, then in the second step, main growth of ZnO NR's were done above seed-layer. The structural morphology of ZnO NR's were investigated by atomic force microscope (AFM) and by cross-sectional scanning electron microscopy (X-SEM) respectively. The results showed that high density NR's were grown uniformly above the ZnO seed layer and the tip of NR's were found in the shape of a hexagonal. After the growth of ZnO NR's, interdigited palladium (Pd) electrodes were deposited by using shadow-mask technique. The electrical characterization of the Pd/ZnO-NR's/Pd based detectors was studied under UV light. The values of contrast-ratio and responsivity were calculated from I-V characteristics of MSM UV detectors. These results may be helpful for the simplistic fabrication of hydrothermally grown ZnO NR's based UV detectors.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optik - International Journal for Light and Electron Optics - Volume 137, May 2017, Pages 96-100
نویسندگان
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