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Your search keyword '"Jiang, Zhenyu"' showing total 19 results
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19 results on '"Jiang, Zhenyu"'

17. Improved two-dimensional responsivity physical model of a CMOS UV and blue-extended photodiode

Author

Luo Jun, Chen Changping, Jin Xiangliang, Tian Manfang, and Jiang Zhenyu

Subjects
Materials science, Silicon, Light detection, business.industry, chemistry.chemical_element, Condensed Matter Physics, medicine.disease_cause, Electronic, Optical and Magnetic Materials, Photodiode, law.invention, Responsivity, Optics, chemistry, CMOS, law, Boron doping, Materials Chemistry, medicine, Optoelectronics, Electrical and Electronic Engineering, business, Boron, Ultraviolet
Abstract

A CMOS UV and blue-extended photodiode is presented and fabricated for light detection in the ultraviolet/blue spectral range. An octagon homocentric ring-shaped geometry is used to improve the ultraviolet responsivity and suppress edge breakdown. This paper has established a two-dimensional responsivity physical model for the presented photodiode and given some numerical analyses. The dead layer effect, which is caused by the high-doping effects and boron redistribution, is considered when analyzing the distribution of the current of the proposed UV and blue-extended photodiode. In the dead layer, the boron doping profile decreases towards the surface. Simulated results illustrate that the responsivity in the UV range is obviously decreased by the effect of the dead layer, while it is not affected in the visible and near-infrared part of the spectrum. The presented photodiode is fabricated and the silicon tested results are given, which agree well with the simulated ones.

Published
2014

19. Effect of chemical polish etching and post annealing on the performance of silicon heterojunction solar cells

Author

Zhang Yu, Zhu Mei-Fang, Zhou Yuqin, Dou Yuhua, Jiang Zhenyu, and Liu Fengzhen

Subjects
Materials science, business.industry, Heterojunction, Chemical vapor deposition, Quantum dot solar cell, Condensed Matter Physics, Polymer solar cell, Electronic, Optical and Magnetic Materials, Amorphous solid, law.invention, law, Etching (microfabrication), Solar cell, Materials Chemistry, Electronic engineering, Optoelectronics, Crystalline silicon, Electrical and Electronic Engineering, business
Abstract

Amorphous/crystalline silicon heterostructure solar cells have been fabricated by hot wire chemical vapor deposition (HWCVD) on textured p-type substrates. The influence of chemical polish (CP) etching and the post annealing process on the solar cell performance have been studied. The CP treatment leads to a reduction of stress in the i-layer by the slight rounding of the pyramid peaks, therefore improving the deposition coverage and the contact by each layer, which is beneficial for the performance of the solar cells. An optimized etching time of 10–15 s has been obtained. A post annealing process leads to a considerably improved open voltage (Voc), filled factor (FF), and conversion efficiency (η) by restructuring the deposited film and reducing the series resistance. An efficiency of 15.14% is achieved that represents the highest result reported in China for an amorphous/crystalline heterostructure solar cells based on the textured p-type substrates.

Published
2009

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