Bi-directional light conversion agent GdBO3:Yb<3+>/Tb<3+>-assisted photo-anode and preparation method and application thereof

A photoanode and two-way conversion technology, applied in the field of quantum dot sensitized solar cells, can solve the problems of weak light absorption, achieve low cost, improve light absorption capacity, and improve photoelectric conversion efficiency

Active Publication Date: 2018-02-09
爱瑞克(大连)安全技术集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] To compensate for CdSe 0.4 S 0.6 Quantum dot solar cells have weak absorption of light in the ultraviolet and

Method used

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  • Bi-directional light conversion agent GdBO3:Yb&lt;3+&gt;/Tb&lt;3+&gt;-assisted photo-anode and preparation method and application thereof
  • Bi-directional light conversion agent GdBO3:Yb&lt;3+&gt;/Tb&lt;3+&gt;-assisted photo-anode and preparation method and application thereof
  • Bi-directional light conversion agent GdBO3:Yb&lt;3+&gt;/Tb&lt;3+&gt;-assisted photo-anode and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Example 1 Two-way light conversion agent GdBO 3 :Yb 3+ / Tb 3+ Auxiliary photo anode CdSe 0.4 S 0.6 / (GdBO 3 :Yb 3+ / Tb 3+ @TiO 2 ) (1) Preparation method

[0033] 1. Two-way light transfer agent (GdBO 3 :Yb 3+ / Tb 3+ ) Synthesis of Nano Powder

[0034] Synthesized by an improved sol-gel Pechini method. 2.37g Gd 2 O 3 , 0.66g Yb 2 O 3 , 0.81g Tb 2 O 3 , Dissolved in 4.13mL of concentrated HNO 3 in. Excess acid is removed by evaporating the solution several times to prepare rare earth nitrate. The rare earth nitrate was dissolved in 2.20 mL of deionized water, and then 25.92 g of citric acid and 2.20 mL of ethylene glycol were added and mixed uniformly to obtain a mixed solution. Add 0.88g H to the mixture 3 BO 3 , And continue to stir for 10 minutes to obtain a homogeneous liquid; dry the homogeneous liquid at 80° C. for 24 hours to remove water and form a black resin. Finally, the black resin is calcined at 900°C for 3 hours to obtain a white powder, which is a bidirectio...

Embodiment 2

[0064] Example 2 is based on CdSe 0.4 S 0.6 / (GdBO 3 :Yb 3+ / Tb 3+ @TiO 2 )CdSe of photoanode 0.4 S 0.6 Quantum dot sensitized solar cell

[0065] (1) Preparation method

[0066] 1. Two-way light transfer agent (GdBO 3 :Yb 3+ / Tb 3+ ) Synthesis of Nano Powder

[0067] Synthesized by an improved sol-gel Pechini method. 2.37g Gd 2 O 3 , 0.66g Yb 2 O 3 , 0.81g Tb 2 O 3 , Dissolved in 4.13mL of concentrated HNO 3 in. Excess acid is removed by evaporating the solution several times to prepare rare earth nitrate. The rare earth nitrate was dissolved in 2.20 mL of deionized water, and then 25.92 g of citric acid and 2.20 mL of ethylene glycol were added and mixed uniformly to obtain a mixed solution. Add 0.88g H to the mixture 3 BO 3 , And continue to stir for 10 minutes to obtain a homogeneous liquid; dry the homogeneous liquid at 80° C. for 24 hours to remove water and form a black resin. Finally, the black resin is calcined at 900°C for 3 hours to obtain a white powder, which is a bi...

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Abstract

The invention belongs to a bi-directional light conversion agent GdBO3:Yb<3+>/Tb<3+>-assisted photo-anode and a preparation method and application thereof. A GdBO3:Yb<3+>/Tb<3+>@TiO2 photo-anode is prepared by adopting a sol-gel drop coating technology, and then CdSe0.4S0.6 quantum dots are deposited on the surface of the photo-anode by using a continuous ion layer adsorption and reaction technology at a room temperature. A photochemical test shows that the open-circuit voltage, the short-circuit current and the power conversion efficiency of a CdSe0.4S0.6 quantum dot-sensitized solar cell allare effectively improved after the bi-directional up-and-down light conversion agent GdBO3:Yb<3+>/Tb<3+> is added.

Description

Technical field [0001] The invention belongs to the field of quantum dot sensitized solar cells, and particularly relates to a bidirectional up and down conversion light agent GdBO 3 :Yb 3+ / Tb 3+ Auxiliary photoanode and its in CdSe 0.4 S 0.6 Application of quantum dot sensitized solar cells. Background technique [0002] Solar energy is the most abundant energy source on earth, but it has always been an important scientific problem to efficiently convert abundant solar energy into electricity. At present, the third-generation solar cells represented by quantum dot-sensitized solar cells (QDSSCs) and dye-sensitized solar cells (DSSCs) have the advantages of low cost and environmental protection (compared to traditional silicon solar cells and second-generation thin film). Battery) has attracted the attention of researchers from all over the world. In particular, QDSSCs, as a solar cell sensitized by inorganic substances, have many merits worthy of attention, such as lower produ...

Claims

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Application Information

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IPC IPC(8): H01G9/20H01G9/042
CPCH01G9/2036H01G9/2054Y02E10/542
Inventor 王君刘旭东张朝红张旭赵成房大维刘逸伦
Owner 爱瑞克(大连)安全技术集团有限公司
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