Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Mohammad Abu Raihan Miah"'
Publikováno v:
IEEE Access, Vol 9, Pp 129571-129581 (2021)
Photodetectors having an internal carrier multiplication mechanism such as avalanche detectors and recently discovered detectors with cycling excitation process (CEP) have attracted tremendous interests for their high sensitivity and flexibility of b
Externí odkaz:
https://doaj.org/article/1d6efbe0289b4df4b61413b4a601d670
Publikováno v:
Optics express. 30(10)
In this paper, we investigate the temperature sensitivity of gain and breakdown voltage of detectors based on cycling excitation process (CEP), an internal signal amplification mechanism found in amorphous silicon (a-Si). Changes in gain and breakdow
Publikováno v:
IEEE Journal of Quantum Electronics. 56:1-11
Recent studies show disordered materials such as amorphous silicon (a-Si), in spite of their low mobility, can efficiently amplify photocurrent via carrier multiplication process. Detectors with a thin (~40nm) a-Si multiplication layer has demonstrat
Autor:
Yong-Hang Zhang, Lujiang Yan, Jiayun Zhou, Zhao-Yu He, Iftikhar Ahmad Niaz, Yang Zhang, Mohammad Abu Raihan Miah, Yu-Hwa Lo, Alex Ce Zhang, Yugang Yu
Publikováno v:
Journal of Lightwave Technology. 37:5056-5066
Amorphous materials have low mobility due to their nature of disorder. Surprisingly, some disordered materials showed photocurrent amplification not by conventional photoconductive gain. Recently, amorphous Silicon (a-Si) photodiodes with thin a-Si l
Autor:
Kenji Nomura, Yimu Chen, Sheng Xu, Zihan Xu, Yu-Hwa Lo, Lujiang Yan, Alex Ce Zhang, Jiayun Zhou, Shaurya Arya, Mohammad Abu Raihan Miah, Yugang Yu, Iftikhar Ahmad Niaz, Yusheng Lei
Publikováno v:
Nano letters. 20(3)
Organometallic halide perovskites attract strong interests for their high photoresponsivity and solar cell efficiency. However, there was no systematic study of their power- and frequency-dependent photoresponsivity. We identified two different power
Publikováno v:
2019 Joint 8th International Conference on Informatics, Electronics & Vision (ICIEV) and 2019 3rd International Conference on Imaging, Vision & Pattern Recognition (icIVPR).
In this paper, we proposed a high sensitivity and high resolution surface plasmon resonance biosensor based on WS 2 nanomaterial, methylammonium lead iodide (MAPbI 3 )perovskite nanosheet and Au-Ag bimetallic film. The structure is based on Kretschma
Autor:
Iftikhar Ahmad Niaz, Mohammad Abu Raihan Miah, Yu-Hwa Lo, Jiayun Zhou, Yugang Yu, Zijian Zeng, Yong Zhang, Samir Damle, Alex Ce Zhang
Publikováno v:
Optics Express. 27:37056
A longwave-infrared photodetector made of double layers of 100nm amorphous germanium (a-Ge) and 25nm amorphous silicon (a-Si) have been demonstrated. Under room temperature, the device shows the responsivity of 1.7 A/W, detectivity of 6×108 Jones, a
Autor:
Zihan Xu, Yugang Yu, Yu-Hwa Lo, Alex Ce Zhang, Iftikhar Ahmad Niaz, Mohammad Abu Raihan Miah, Lujiang Yan, Jiayun Zhou
Publikováno v:
2018 IEEE International Conference on Electron Devices and Solid State Circuits (EDSSC).
We report a new physical mechanism, cycling excitation process (CEP), that produces intrinsic gain for photocurrent. The CEP process has shown much greater efficiency and lower noise than the impact ionization process, the mechanism for avalanche pho
Publikováno v:
SPIE Newsroom.
Publikováno v:
Silicon Photonics XII.
Recently we discovered a signal amplification mechanism to amplify photocurrent with high efficiency and low noise. Unlike conventional impact ionization used in avalanche photodetectors, the new amplification mechanism can produce high (>1000) gain