A silicon solar thin film battery based on a double-layer micro-nano two-dimensional multi-tooth resonant grating

A technology of solar thin film and grating, applied in the field of optics

Active Publication Date: 2019-11-12
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, an important problem plaguing solar thin film batteries at present is their photoelectric conversion performance.

Method used

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  • A silicon solar thin film battery based on a double-layer micro-nano two-dimensional multi-tooth resonant grating
  • A silicon solar thin film battery based on a double-layer micro-nano two-dimensional multi-tooth resonant grating
  • A silicon solar thin film battery based on a double-layer micro-nano two-dimensional multi-tooth resonant grating

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Embodiment Construction

[0031] Describe in detail below in conjunction with accompanying drawing:

[0032] 1. Overall

[0033] Such as figure 1 As shown, the upper and lower surfaces of the silicon active layer of the solar thin film cell are provided with a micro-nano two-dimensional multi-tooth resonant grating that changes periodically along the X and Y axes, and there are two grating teeth of silicon material in each period, and two A material is a grating groove of air, and the thickness of the grating layer is along the Z-axis direction.

[0034] 2. Micro-nano two-dimensional multi-tooth resonant grating on the upper surface of the silicon active layer:

[0035]The grating period along the X axis is 1200 nm (T x1 =1200nm), there are two grating teeth of silicon material in each period, and their widths are respectively, wx 11 = 130 nm, wx 12 =54 nanometers; and two grating grooves made of air, whose widths are respectively, kx 11 =306 nm, kx 12 =710nm;

[0036] The grating period along ...

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Abstract

The invention discloses a silicon solar thin film battery based on a double-layer micro-nano two-dimensional multi-tooth resonant grating. Micro-nano two-dimensional multi-tooth resonant grating, each period has two grating teeth made of silicon material, and two grating grooves made of air. By adjusting the structural size of the micro-nano two-dimensional multi-tooth resonant grating on the upper and lower surfaces of the silicon active layer, the position of the grating teeth and the thickness of the grating, theoretical analysis shows that the absorption efficiency of the silicon solar thin film cell to the incident light can reach more than 81.8%, which can The interaction ability between the silicon active layer and sunlight is significantly improved, thereby improving the photoelectric conversion efficiency of the silicon solar thin film cell.

Description

technical field [0001] The invention belongs to the field of optics, in particular to a silicon solar thin film battery based on a double-layer micro-nano two-dimensional multi-tooth resonant grating. Background technique [0002] Thin-film solar cells have attracted much attention from researchers because of their relatively simple manufacturing process, low energy consumption, and small size. However, an important problem plaguing solar thin-film cells at present is their photoelectric conversion performance. Studies have shown that by improving the surface structure of solar thin-film batteries, their ability to capture and absorb sunlight can be improved, allowing more photons to participate in the photoelectric conversion process, thereby improving the photoelectric conversion performance of solar thin-film batteries. Among them, due to the advantages of simple structure, easy integration, and simple manufacturing process, the grating is often placed on the surface of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/054G02B5/18
CPCG02B5/18H01L31/0543Y02E10/52
Inventor 吴华明肖文波马林飞徐欢欢刘宪爽
Owner NANCHANG HANGKONG UNIVERSITY
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