Preparation method of metal surface plasmon polariton-CdSe composite porous anodes

A technology of plasmonic polariton and porous anode, which is applied in the field of solar cells, can solve the problems of complicated purification process, cumbersome preparation process, high cost and unfavorable cost, and achieve the effect of increasing the transmission distance, simple preparation process, and improving battery efficiency

Active Publication Date: 2013-07-24
麟州(巨野)孵化器有限公司
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Problems solved by technology

The first three methods can produce nanoparticles with uniform distribution and controllable size, but due to expensive equipment and high cost, it is not conducive to large-scale production. Chemical methods can also synthesize nanoparticles with controllable shape and size, but due to the cumbersome preparation process , the purification process is complex and limits its application

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  • Preparation method of metal surface plasmon polariton-CdSe composite porous anodes
  • Preparation method of metal surface plasmon polariton-CdSe composite porous anodes
  • Preparation method of metal surface plasmon polariton-CdSe composite porous anodes

Examples

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Embodiment 1

[0047] In this example, a single-layer ITO-Au(300s)-CdSe composite porous anode was prepared by an electrochemical method. Its preparation process is as follows:

[0048] Step 1, on the surface of clean and dry ITO conductive glass 1, utilize electrochemical method to deposit gold nanoparticles 2 (see figure 1 ). The electrodeposition solution used in the electrochemical method is composed of chloroauric acid aqueous solution and sodium sulfate solution, wherein the concentration of chloroauric acid is 10 mmol / L. Moreover, a three-electrode system is adopted: ITO conductive glass 1 is used as the working electrode, the Pt sheet is used as the counter electrode, and the saturated calomel electrode (SCE) is used as the reference electrode; the model of the electrochemical workstation is CHI630D, and the constant potential mode is adopted, and the deposition voltage is - 0.8 V, the deposition time is 300s. The surface morphology of the obtained samples was determined by s...

Embodiment 2

[0052] In step 1 of this embodiment, gold nanoparticles 2 are deposited on the surface of ITO conductive glass 1 by electrochemical method (see figure 1 ). The electrodeposition solution used in the electrochemical method is composed of chloroauric acid aqueous solution and sodium sulfate solution, wherein the concentration of chloroauric acid is 15 mmol / L; the deposition voltage is -1.2V, and the deposition time is 100s. The surface morphology of the sample of the ITO conductive glass with gold nanoparticles deposited on the surface prepared in this embodiment is measured by scanning electron microscope, as image 3 (a) shown. Depend on image 3 (a) It can be seen that gold nanoparticles are evenly distributed on the surface of ITO conductive glass, and the diameter of gold nanoparticles is distributed in the range of 10-20nm. It can be seen that the deposition time is reduced and the particle size of gold nanoparticles becomes smaller. The ultraviolet-visible absorption ...

Embodiment 3

[0056] In step 1 of this embodiment, gold nanoparticles 2 are deposited on the surface of ITO conductive glass 1 by electrochemical method (see figure 1 ). The electrodeposition solution used in the electrochemical method is composed of chloroauric acid aqueous solution and sodium sulfate solution, wherein the concentration of chloroauric acid is 12 mmol / L. The deposition voltage was -1.0V, and the deposition time was 600s. The surface morphology of the sample of the ITO conductive glass with gold nanoparticles deposited on the surface prepared in this embodiment is measured by scanning electron microscope, as Figure 4 (a) shown. from Figure 4 (a) It can be seen that the gold nanoparticles are evenly distributed on the surface of the ITO conductive glass, and the diameter of the gold nanoparticles is distributed in the range of 30-50nm. It can be seen that the density of gold nanoparticles increases as the deposition time increases. The ultraviolet-visible absorption cu...

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Abstract

The invention discloses a preparation method of metal surface plasmon polariton-CdSe composite porous anodes. Specifically, gold nano particles of certain densities and certain sizes are deposited on the surface of conducting glass by the adoption of a three-electrode system and the utilization of an electrochemical method, CdSe quantum dots are deposited on the surfaces of the gold nano particles of the conducting glass through the utilization of the electrochemical method to obtain gold nano particle-CdSe quantum dot composite anodes, and annealing treatment is carried out on the gold nano particle-CdSe quantum dot composite anodes in an inert atmosphere under the condition of 400-450 DEG C to obtain gold nano particle-CdSe quantum dot composite porous anodes. The gold nano particle-CdSe quantum dot composite porous anodes of multi-layer structures are constructed through the fact that the steps are repeated. According to the preparation method of the metal surface plasmon polariton-CdSe composite porous anodes, surface plasmon polariton enhancement effects of the gold nano particles are used, absorption efficiency of incident light is effectively enhanced, photoelectric currents are improved, the multi-layer structures prolong a travel path of light, and light absorption is benefited. The preparation method of the metal surface plasmon polariton-CdSe composite porous anodes is simple in operation of a preparation technology, easy to achieve, low in cost, and high in efficiency.

Description

technical field [0001] The invention belongs to the technical field of solar cells, in particular to a method for preparing a metal surface plasmon-CdSe composite porous anode with high photocurrent. Background technique [0002] Metal surface plasmon polaritons (SPPs) are electromagnetic wave patterns caused by the interaction of light and electrons on the metal surface. Each metal material has a corresponding inherent plasmon oscillation frequency. When the incident light hits the metal nanoparticles and the frequency of the incident light is equal to the oscillation frequency of the metal, the collective oscillation of the conduction band electrons of the metal particles will resonate, which is This is called plasmon resonance in metals. This plasmon resonance enables incident light to propagate around the metal nanoparticles or at the medium interface. In recent years, the surface plasmon resonance effect has received extensive attention in the fields of spectroscopy a...

Claims

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Application Information

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IPC IPC(8): H01G9/04H01G9/20H01M14/00
Inventor 刘爱萍任青华许涛袁明赵明
Owner 麟州(巨野)孵化器有限公司
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