Bulk effect solar cell material and preparation method thereof

A solar cell and body effect technology, applied in circuits, electrical components, photovoltaic power generation, etc., can solve problems such as uneven particle distribution, high crystallization temperature, and complex process, and achieve high film quality, low growth temperature, and light absorption. good performance

Inactive Publication Date: 2011-09-07
EAST CHINA NORMAL UNIV
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Problems solved by technology

[0004] The invention overcomes the technical defects of bismuth ferrite thin film in the prior art, such as complex process, high cost, high crystallization temperature, uneven particle distribution, no obvious preferred orientation, and many impurity phases, and provides a kind of thin film in LaNiO ...

Method used

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  • Bulk effect solar cell material and preparation method thereof
  • Bulk effect solar cell material and preparation method thereof
  • Bulk effect solar cell material and preparation method thereof

Examples

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Embodiment 1

[0036] This example is in LaNiO 3 / Si substrate growth BiFeO 3 The preparation process of the bulk effect solar cell material and its photovoltage test.

[0037] 1. Thin film preparation

[0038] 1. Preparation of precursor solution. Ferric nitrate and bismuth nitrate powder were dissolved in glacial acetic acid, stirred at room temperature for 30 minutes, and the stirring speed was 600 rpm, so that ferric nitrate and bismuth nitrate were completely dissolved. Then add ethylene glycol to adjust the viscosity of the solution so that the solution concentration is 0.25mol / L. Stirring was continued at room temperature for 30 minutes at a stirring rate of 600 rpm. A dark red clear solution was obtained. The solution was aged for 72 hours to obtain bismuth ferrite sol. The resulting sol can be stored at room temperature for a long time.

[0039] 2. LaNiO 3 / Si substrates were sonicated in acetone, alcohol, and deionized water for 5 minutes.

[0040] 3. glued. Spin-coat th...

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Abstract

The invention provides a bulk effect solar cell material which comprise a metal electrode, BiFeO3 ferroelectrics and a LaNiO3/Si substrate, wherein the BiFeO3 ferroelectrics grows vertical to the direction of the LaNiO3/Si substrate. The invention also provides a preparation method of the bulk effect solar cell material. The method comprises the following steps of: with BiFeO3 as structural material, preparing pure phase BiFeO3 film by using a sol-gel method, spin-coating the obtained BiFeO3 film on the LaNiO3/Si substrate and carrying out stepped annealing at a high temperature, and finally sputtering electrodes to the BiFeO3 film. The BiFeO3 film disclosed by the invention has uniform and dense surface, good crystalline properties and no impurity phase, and can test photovoltaic effect by using a metal electrode-ferroelectric-buffer layer substrate sandwich structure. The test structure is simple and clear and larger open-circuit voltage can be obtained.

Description

technical field [0001] The invention relates to the technical field of optoelectronic materials, semiconductor materials and devices, in particular to a bulk effect solar cell material and a preparation method thereof. Background technique [0002] With the over-exploitation of non-renewable energy, the energy crisis spreads all over the world, and the development and utilization of new energy is imminent. As the leading renewable energy, solar energy has a very optimistic development prospect. Solar cells are components that directly use solar energy to generate electricity. At present, solar cells that are widely used are mainly made of silicon series. As we all know, the improvement of their conversion efficiency has almost reached the limit. Therefore, the research and development of new materials is the key to the development of the solar cell industry. It has practical significance for better and more efficient use of solar energy. [0003] Due to its unique self-pola...

Claims

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Application Information

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IPC IPC(8): H01L31/04H01L31/032H01L31/18
CPCY02E10/50Y02P70/50
Inventor 黄东骥杨平雄褚君浩
Owner EAST CHINA NORMAL UNIV
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