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One-dimensional photonic crystal back reflecting mirror based inverted semitransparent polymer solar cell and preparation method thereof

A technology of dimensional photonic crystals and solar cells, applied in the field of polymer solar cells, can solve problems such as expensive production equipment, restrictions on large-scale civilian commercialization, complex production processes, etc., and achieve good electrical conductivity, high transmittance, high efficiency effect

Inactive Publication Date: 2013-03-27
JILIN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The main way to use solar energy is solar cells. Traditional solar cells are mainly silicon cells, but due to their complex production process and expensive production equipment, their large-scale civil and commercial applications are limited.

Method used

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  • One-dimensional photonic crystal back reflecting mirror based inverted semitransparent polymer solar cell and preparation method thereof
  • One-dimensional photonic crystal back reflecting mirror based inverted semitransparent polymer solar cell and preparation method thereof
  • One-dimensional photonic crystal back reflecting mirror based inverted semitransparent polymer solar cell and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 1. Use acetone, ethanol and deionized water in sequence to ultrasonically clean the transparent FTO conductive glass. After cleaning, dry it with dry nitrogen and put it in a petri dish for later use;

[0034] 2. At room temperature, drop the mixed solution of 20ml ethanol, 5ml deionized water, and 1ml hydrochloric acid with a concentration of 0.2mol / l into the solution containing 5ml tetrabutyl titanate, 40ml ethanol, and 3ml acetylacetone , and accompanied by vigorous stirring for 1 hour, left to age for 48 hours, and then obtained TiO 2 Sol.

[0035] 3. Place the configured TiO 2 The sol was spin-coated on ITO glass at a speed of 1000rpm and spin-coated for 20s, and sintered in a muffle furnace at 440°C for 1.5 hours. After sintering, nc-TiO was formed on the ITO glass. 2 layer with a thickness of about 40nm;

[0036] 4. Spin-coat the chlorobenzene solution of P3HT and PCBM with a mass ratio of 1:0.9 and a uniform (stirred) concentration of 10 mg / ml on the ITO / nc-...

Embodiment 2

[0041] 1. Use acetone, ethanol and deionized water in sequence to ultrasonically clean the transparent FTO conductive glass. After cleaning, dry it with dry nitrogen and put it in a petri dish for later use;

[0042] 2. At room temperature, drop the mixed solution of 40ml ethanol, 15ml deionized water, and 3ml hydrochloric acid with a concentration of 0.3mol / l into the solution containing 20ml tetrabutyl titanate, 80ml ethanol, and 10ml acetylacetone , and accompanied by vigorous stirring for 5 hours, left to age for 48h, and then obtained TiO 2 Sol.

[0043] 3. Place the configured TiO 2 The sol was spin-coated on ITO glass at a speed of 5000rpm and spin-coated for 20s, and sintered in a muffle furnace at 460°C for 3 hours. After sintering, nc-TiO was formed on the ITO glass. 2 layer, the thickness is 15nm;

[0044] 4. Spin-coat the chlorobenzene solution of P3HT and PCBM with a mass ratio of 1:1 and a uniform concentration of 20mg / ml on the ITO / nc-TiO at a speed of 1500rp...

Embodiment 3

[0049] 1. Use acetone, ethanol and deionized water in sequence to ultrasonically clean the transparent FTO conductive glass. After cleaning, dry it with dry nitrogen and put it in a petri dish for later use;

[0050] 2. At room temperature, drop a mixed solution of 30ml ethanol, 10ml deionized water, and 2ml hydrochloric acid with a concentration of 0.28mol / l into a solution containing 10ml tetrabutyl titanate, 60ml ethanol, and 5ml acetylacetone , and accompanied by vigorous stirring for 3 hours, left to age for 48h, and then obtained TiO 2 Sol.

[0051] 3. Place the configured TiO 2 The sol was spin-coated on ITO glass at a speed of 3000rpm and spin-coated for 20s, and sintered in a muffle furnace at 450°C for 2 hours. After sintering, nc-TiO was formed on the ITO glass. 2 layer, the thickness is 25nm;

[0052] 4. Spin-coat the chlorobenzene solution of P3HT and PCBM with a mass ratio of 1:0.8 and a uniform concentration of 15mg / ml on the ITO / nc-TiO at a speed of 1200rpm ...

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Abstract

The invention belongs to the technical field of polymer solar cells and particularly relates to an inverted semitransparent polymer solar cell and a preparation method thereof. The inverted semitransparent polymer solar cell is based on a one-dimensional photonic crystal which is composed of high and low refraction index materials WO3 and LiF and serves as a back reflecting mirror. The method comprises the steps of firstly, growing a layer of uniform and compact N-type TiO2 film on a conductive glass substrate; secondly, conducting spin-coating of a layer of a P3HT:PCBM solution dissolved by dichlorobenzene, annealing, and then growing WO3 and Ag sequentially; and finally, on a semitransparent silver electrode, growing the [WO3 / LiF]N one-dimensional photonic crystal. The semitransparent polymer solar cell which is prepared by the method solves the problems that traditional semitransparent solar cells are high in transmittance and low in efficiency. By the aid of a high-reflection film structure of the [WO3 / LiF]N one-dimensional photonic crystal, the reflection and the absorption of light of specific wavelengths can be facilitated, the contradiction between the efficiency and the transmittance of semitransparent cells can be eliminated, and the energy conversion efficiency can be effectively improved.

Description

technical field [0001] The invention belongs to the technical field of polymer solar cells, in particular to a WO 3 An inverted translucent polymer solar cell with a one-dimensional photonic crystal composed of LiF and LiF as a back reflector and a preparation method thereof. Background technique [0002] With the progress of society and the rapid development of economy, the demand for energy has increased dramatically. The depletion of conventional energy resources dominated by fossil fuels and the resulting environmental pollution and ecological problems are severe situations that people in modern society are facing. As a renewable energy source, solar energy has become one of the most promising energy sources in the future due to its advantages of safety, pollution-free and inexhaustible resources. The main way to use solar energy is solar cells. Traditional solar cells are mainly silicon cells, but due to their complex production process and expensive production equipm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/44H01L51/48
CPCY02E10/549
Inventor 沈亮于文娟阮圣平刘彩霞郭文滨董玮张歆东陈维友陆斌武
Owner JILIN UNIV
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