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One-dimensional photonic crystal selective radiator

A dimensional photonic crystal and selective technology, applied in semiconductor devices, optics, instruments, etc., can solve the problems of poor selective radiation effect, limit the photoelectric conversion efficiency of TPV and STPV systems, and achieve mature preparation methods, simple structure, The effect of low production cost

Inactive Publication Date: 2014-10-01
SHAOXING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantage is that the selectivity of photonic crystals is aimed at certain specific bands, and still has a certain width.
Poor selective radiation effect, which limits the photoelectric conversion efficiency of TPV and STPV systems

Method used

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  • One-dimensional photonic crystal selective radiator
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  • One-dimensional photonic crystal selective radiator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] figure 1 Shown is a schematic cross-sectional structure diagram of the one-dimensional photonic crystal selective radiator provided by Embodiment 1 of the present invention. figure 2 shown as figure 1 Schematic diagram of the selective radiation of the 1D photonic crystal selective radiator shown. image 3 Shown are the blackbody radiation spectrum at 1100 Kelvin, the continuum radiation spectrum of the base material, and figure 1 Comparison plot of the selective radiation spectra of the shown 1D photonic crystal selective radiators. Please also refer to Figure 1 to Figure 3 .

[0027] Such as figure 1 As shown, the one-dimensional photonic crystal selective radiator provided by the present invention includes a matrix material 1 . And two kinds of dielectric materials, erbium-doped silicon dioxide film 2 and silicon film 3, are alternately deposited on the base material 1, and one layer of erbium-doped silicon dioxide film 2 and one layer of silicon film 3 const...

Embodiment 2

[0044] Such as Figure 4 As shown, this embodiment is basically the same as Embodiment 1 and its variations, except that the shape of the base material 1 is a hollow cylinder, and the preparation of the erbium-doped silicon dioxide film 2 and the silicon film 3 adopts chemical vapor deposition or pyrolysis The spraying method is used to deposit alternately on the outer sidewall of the base material 1, and the number of periodic layers of the erbium-doped silicon dioxide film 2 and the silicon film 3 is 2 periods.

[0045] The one-dimensional photonic crystal selective radiator provided in this embodiment is suitable for gas thermal photovoltaic power generation and solar thermal photovoltaic power generation. The burning high-temperature gas passes through the central hole of the base material 1 or focuses sunlight into the central hole, heating the one-dimensional photonic crystal selective radiator to a high temperature, and the generated selective infrared radiation is emit...

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Abstract

The invention provides a one-dimensional photonic crystal selective radiator which comprises a base body material and two types of dielectric materials including multiple periods of erbium-doped silicon dioxide films and silicon films alternatively deposited on the base body material. The base body material is silicon. The first-layer films deposited on the base body material are erbium-doped silicon dioxide films. The one-dimensional photonic crystal selective radiator integrates characteristic radiation of rare earth ions and a spectrum control feature of a photonic crystal to obtain selective radiation characteristic with excellent performance, remarkably improves the photovoltaic conversion efficiency of TPV and STPV systems and further has the advantages of being simple in structure, mature in preparation method and the like.

Description

technical field [0001] The invention relates to the field of photovoltaic technology, and in particular to a one-dimensional photonic crystal selective radiator. Background technique [0002] With the continuous development of the economy, non-renewable energy sources such as coal and oil are frequently running out, and energy issues have increasingly become a bottleneck restricting social and economic development. Therefore, energy-saving and new energy technologies have attracted great attention both at home and abroad. [0003] Thermo-photovoltaic (TPV) system is a technology that directly converts radiant energy into electrical energy. Its basic principle is that thermal radiant energy is projected onto the surface of the radiator and heated, and the infrared light radiated by the high-temperature radiator is projected onto the surface of the photovoltaic cell, and the photovoltaic cell will The received infrared light is converted into electrical energy. The TPV system...

Claims

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Application Information

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IPC IPC(8): G02F1/01H01L31/055
CPCY02E10/50Y02E10/52
Inventor 谭永胜方泽波刘士彦
Owner SHAOXING UNIVERSITY
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