کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5450292 | 1512862 | 2017 | 25 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Analytical modeling to design the vertically aligned Si-nanowire metal-oxide-semiconductor photosensors for direct color sensing with high spectral resolution
ترجمه فارسی عنوان
مدلسازی تحلیلی برای طراحی سنسورهای فلزی-اکسید نیمه هادی سینو نانوسیمهای جهت اندازه گیری مستقیم رنگ با تفکیک طیفی بالا
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
چکیده انگلیسی
In the current work, an analytical model for the design of vertically aligned silicon (Si) nanowire metal-oxide-semiconductor (MOS) capacitor based multi-color photodetectors has been developed for the detection of entire visible spectrum with high spectral resolution. The photogeneration phenomena within the nanostructures are analyzed in detail by developing a quantum field model associated with second quantization electron-photon field operators. The non-equilibrium Green's function (NEGF) formalism is employed to solve the relevant equations. The study shows that the proposed device with specified design of diameter-voltage combinations is capable of detecting 64 spectral bands of the entire visible spectrum (380Â nm to700 nm) directly with a very high resolution of 5Â nm wavelength. Such direct sensing of each wavelength is observed to be independent of the fluctuations of illumination intensity. The device is designed to obtain a full-width-at-half-maximum (FWHM) smaller than the spectral resolution (5Â nm) for each wavelength of the visible range, which indicates a very high quality digital imaging/sensing method. Such devices may be a potential alternative for the future nanoelectronics based photodevices for superior sensing/imaging applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica E: Low-dimensional Systems and Nanostructures - Volume 87, March 2017, Pages 44-50
Journal: Physica E: Low-dimensional Systems and Nanostructures - Volume 87, March 2017, Pages 44-50
نویسندگان
Subhrajit Sikdar, Basudev Nag Chowdhury, Ajay Ghosh, Sanatan Chattopadhyay,