Method and device for preparing photo anode in flexible solar cell through selective laser sintering

A flexible solar cell and selective technology, applied in the field of solar cells, can solve the problems of low production efficiency, long heating time, difficult mass production, etc., and achieve the effect of realizing efficient mass production and improving sintering efficiency

Active Publication Date: 2011-04-13
武汉飞能达激光技术有限公司
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  • Claims
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Problems solved by technology

Although the above methods can improve the diffusion process of the electrons in the flexible dye-sensitized solar cell between the semiconductor nanomaterial particles and the efficiency of the dye-sensitized solar cell, they still have not reached the level between the nano-semiconductor particles and the nano-semiconductor particle size. The ideal effect of forming a neck-shaped chemical connection between the particles 5 and the conductive film 2, but there are also problems such as complicated process, long heating time, low production efficiency, and difficulty in large-scale production.

Method used

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  • Method and device for preparing photo anode in flexible solar cell through selective laser sintering
  • Method and device for preparing photo anode in flexible solar cell through selective laser sintering
  • Method and device for preparing photo anode in flexible solar cell through selective laser sintering

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example 1

[0025] The present invention adopts the model 3W 3.4 micron mid-infrared OPO laser produced by Leishi Company, the output wavelength is 3.4 μm, and the continuous output power is from 0 to 10 watts. The focused spot size is 10mm×0.2mm, passing through a 0.2mm thick PEN flexible plastic substrate and a 100nm thick ITO conductive film to sinter the TiO2 nanoparticle porous film. The laser output mode is continuous output, TiO 2 The transmission speed of the photoanode is from 10mm / s to 900mm / s. Adjust laser power density from 5 W / cm 2 to 100 W / cm 2 When changing, TiO 2 Nanoparticle Porous Films of TiO 2 Between nanoparticles and TiO 2 The physical point contact between the nanoparticles and the conductive film is transformed into a neck-type chemical connection. When the laser energy density is high, TiO 2 The nanoparticles will be melted, but the PEN flexible plastic substrate will not be damaged.

[0026] In each example of the present invention, the scanning speed of ...

example 2

[0028] The present invention adopts the YLR-5-LP model fiber laser produced by IPG Company, the output wavelength is 1071nm, and the continuous output power is from 0 to 50 watts. Focusing spot size is 10mm×0.2mm, through 0.2mm thick PEN flexible plastic substrate and 100nm thick ITO conductive film, for TiO 2 Nanoparticle porous membranes were sintered. The laser output mode is continuous output, TiO 2 The transmission speed of the photoanode is from 100-700mm / s, and the power density of the output beam of the laser is adjusted from 3 watts / cm 2 to 60 W / cm 2 When changing, TiO 2 Nanoparticle Porous Films of TiO 2 Between nanoparticles and TiO 2 The physical point contact between the nanoparticles and the conductive film is transformed into a neck-shaped chemical connection. When the laser energy density is high, TiO 2 The nanoparticles will be melted, but the PEN flexible plastic substrate will not be damaged.

example 3

[0030] The present invention adopts the Awave-532-20W-25K model all-solid-state Q-switched green laser produced by American Lightwave Company, the output wavelength is 532nm, TiO 2 The transmission speed of the photoanode is 10-900mm / s, the frequency is set to 150kHz, the focus spot size is 10mm×0.2mm, it passes through the 0.2mm thick PEN flexible plastic substrate and the 100nm thick ITO conductive film, and the TiO 2 Nanoparticle porous membranes are sintered with quasi-continuous power densities from 8-100 W / cm 2 When changing, TiO 2 Nanoparticle Porous Films of TiO 2 Between nanoparticles and TiO 2 The physical point contact between the nanoparticles and the conductive film is transformed into a neck-type chemical connection until the TiO 2 The nanoparticles were melted, but the PEN flexible plastic substrate was not damaged.

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Abstract

The invention discloses a method and device for preparing a photo anode in a flexible dye-sensitized solar cell through selective laser sintering. The method is characterized in that the laser beams with the wavelength of 355nm-3.4mu m are adopted to act on the porous membrane with nanometer semiconductor particles to convert physical point contact between the nanometer semiconductor particles in the porous membrane and between the nanometer semiconductor particles and the conducive membranes to neck type chemical bound; and the power density of laser is 1-100W/cm<2> and the scanning speed of laser is 1-900mm/s. The device comprises a laser, an equipartition mirror, a beam expanding and collimating mirror, a diaphragm, a light guide mirror and a focusing mirror which are arranged on the same light path in sequence, wherein the diaphragm is movably installed and can be replaced according to the requirement of the focal spot of laser; and the equipartition mirror is a shaping mirror or an integral mirror. Through the method, the porous membrane with nanometer semiconductor particles on the flexible dye-sensitized solar cell can be subjected to sintering and heat treatment under high temperature, without causing damage on the flexible plastic substrate of the photo anode.

Description

technical field [0001] The invention belongs to the technical field of solar cells, and specifically relates to a method and device for laser selective sintering of flexible solar cell photoanodes, which are mainly used for laser selective sintering of nano particle films of flexible dye-sensitized solar cells on plastic substrates. Background technique [0002] The main technology of flexible dye-sensitized solar cells is to organically combine high-performance dyes with high-specific surface area nanocrystalline films. The porosity of nanocrystalline films makes its total surface area much larger than its geometric area, which can absorb a large amount of dyes, thereby It can effectively absorb sunlight and convert it into electricity. The structure of flexible dye-sensitized solar cells such as figure 1 As shown, it is composed of a flexible plastic substrate 1, an oxide conductive film 2, an electrolyte 3, a dye 4 and a nano-semiconductor porous film 6, wherein the nano...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/052H01G9/20H01G13/00H01M14/00H01L51/48
CPCY02E10/542Y02E10/549
Inventor 段军程一兵曾晓雁王鸣魁
Owner 武汉飞能达激光技术有限公司
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