کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7223869 | 1470563 | 2018 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Preparation of multi-walled carbon nanotubes/n-Si heterojunction photodetector by arc discharge technique
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In this paper, heterojunction photodetector based on drop casting of colloidal multi-walled carbon nanotubes prepared by arc discharge technique on single crystalline silicon was demonstrated. The structural and optical of multiwalled carbon nanotubes MWCNTs was investigated by x-ray diffraction XRD, scanning electron microscopy SEM, Fourier transformation infrared spectroscopy FT-IR, and UV-vis spectroscopy. The dark current-voltage I-V characteristics revealed that MWCNTs/Si heterojunction showed a good rectification characteristics and the ideality factor was found to be around 3.1. The photocurrent to dark current ratio was 1.16â¯Ãâ¯103 at 8â¯V bias applied bias and light intensity of 100â¯mW/cm2. The photodetector exhibited good linearity characteristics. The photodetector responsivity was estimated as 0.32â¯A/W at 800â¯nm at 9â¯V reverse bias. The open circuit voltage Voc and short circuit current density Jsc of the device were measured.The photodetector has rise time of 30â¯ns in absence of the external field.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optik - Volume 164, July 2018, Pages 395-401
Journal: Optik - Volume 164, July 2018, Pages 395-401
نویسندگان
Raid A. Ismail, Mohammed I. Mohammed, Luma H. Mahmood,