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A perovskite photovoltaic material with wide-range spectral absorption and its preparation method

A photovoltaic material and spectral absorption technology, applied in the field of photovoltaic materials, can solve the problems of destroying the continuity of perovskite materials, loose contact, uneven cell efficiency, etc., achieve simple and controllable production process, improve efficiency, and improve photoelectric conversion efficiency Effect

Active Publication Date: 2017-10-20
ANHUI HUASUN ENERGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the scheme disclosed in the patent, the quantum dot colloid is only coated on the surface of the cured perovskite. In the obtained battery, the contact surface between the solid phase and the solid phase is still prone to loose contact, and the quantum dot layer and the calcium There are many impurities and dangling bonds between the titanium ore layers, resulting in many electron-hole recombination centers in the battery, resulting in uneven efficiency of the prepared battery
[0006] To sum up, in the existing extended perovskite battery absorption range, there is no structure that is separated from the solid phase and the contact surface with the solid phase tends to be more during the preparation process, and the electrons face a large potential barrier in the transmission. The common advantage of the wide absorption domain of quantum dots and the simple preparation of perovskite also destroys the continuity of perovskite materials in batteries

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] This embodiment includes the following steps: mix 1.0 mmol of cuprous chloride, 0.3 mmol of zirconia nanoparticles with a particle size of 200 nm, and 0.1 mol of n-hexylamine, stir at room temperature for 1 hour, and then slowly add 0.9 mmol of carbon disulfide dropwise therein, And keep stirring to obtain a brown solution, transfer the solution to the autoclave, the temperature rise rate of the autoclave is 5°C / min, the reactor is heated to 120°C for 2 hours, and naturally cooled to room temperature to obtain additive A. PbI with a molar ratio of 1:1 2 with CH 3 NH 3 I was dissolved in γ-butyrolactone, stirred at 30°C for 1 h, then additive A was added, and the stirring was continued for 1 h to obtain a perovskite precursor solution. The precursor solution was spin-coated on a conductive glass ITO substrate at 1000 rpm, and heat-treated at 150° C. to form a composite perovskite light-absorbing layer film. Under high vacuum, 100nm aluminum electrodes were evaporated ...

Embodiment 2

[0036] This embodiment includes the following steps: mix 1.0 mmol of cuprous chloride, 0.5 mmol of zirconia nanoparticles with a particle size of 100 nm, and 0.2 mol of n-hexylamine, stir at room temperature for 1 hour, and then slowly add 1.2 mmol of carbon disulfide dropwise therein, And keep stirring to obtain a brown solution, transfer the solution to the autoclave, the temperature rise rate of the autoclave is 5°C / min, the reactor is heated to 120°C for 2 hours, and naturally cooled to room temperature to obtain additive A. PbI with a molar ratio of 1:1 2 with CH3 NH 3 I was dissolved in γ-butyrolactone, stirred at 30°C for 1 h, then additive A was added, and the stirring was continued for 1 h to obtain a perovskite precursor solution. The precursor solution was spin-coated onto a conductive glass ITO substrate at 1500 rpm, and heat-treated at 150° C. to form a composite perovskite light-absorbing layer film. Under high vacuum, 100nm gold electrodes were evaporated to c...

Embodiment 3

[0038] This embodiment comprises the following steps: mix 1.0 mmol of cuprous chloride, 0.5 mmol of zirconia nanoparticles with a particle size of 500 nm and 0.2 mol of n-hexylamine, stir at room temperature for 1 hour, then slowly add 1.5 mmol of carbon disulfide dropwise therein, And keep stirring to obtain a brown solution, transfer the solution to the autoclave, the temperature rise rate of the autoclave is 5°C / min, the reactor is heated to 140°C for 2 hours, and naturally cooled to room temperature to obtain additive A. PbI with a molar ratio of 1:1 2 with CH 3 NH 3 I was dissolved in γ-butyrolactone, stirred at 50°C for 1 h, then additive A was added, and the stirring was continued for 1 h to obtain a perovskite precursor solution. The precursor solution was spin-coated onto a conductive glass ITO substrate at 1500 rpm, and heat-treated at 150° C. to form a composite perovskite light-absorbing layer film. Under high vacuum, 200nm gold electrodes were evaporated to com...

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Abstract

The invention discloses a wide-range spectral absorption perovskite photovoltaic material and a preparation method thereof. The method comprises: adding an additive to a perovskite reactant to form an inorganic particle hybrid perovskite precursor solution, and then The precursor solution is spin-coated on a substrate covered with an electron transport material, and a composite perovskite light-absorbing layer film is formed after heat treatment at 150° C.; wherein the additives include halides, carbon disulfide, zirconia nanoparticles, and n-hexylamine. Since the light-absorbing layer of the perovskite solar cell in this scheme uses nano-cuprous sulfide or stannous sulfide materials generated by chemical reactions and zirconia nanoparticles to co-dope the perovskite light-absorbing layer, the light-absorbing range of the perovskite layer is expanded. The battery efficiency is increased from 6% to more than 10%, and the method is simple and effective, and the cost is saved. Therefore, the method of the present invention for improving the performance of the light-absorbing layer of the perovskite solar cell has extremely high industrial application value.

Description

technical field [0001] The invention relates to the field of photovoltaic materials, in particular to a perovskite photovoltaic material with wide-range spectral absorption and a preparation method thereof, in particular to improving the photoelectric conversion efficiency of solar cells. Background technique [0002] In the case of decreasing fossil fuels, solar energy is inexhaustible, widely distributed and clean, and has great advantages over other energy sources. The continuous development and application of solar cells can directly and effectively convert solar energy into electrical energy for human use, and continue to develop. [0003] Perovskite solar cells are named after perovskite as the absorbing layer. It is developed from dye-sensitized cells. As of 2013, the photoelectric conversion efficiency of perovskite thin-film solar cells has increased from 3.8% in 5 years. That quickly increased to a certified 16.2%. Perovskite materials play a very important role ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/42H01L51/46H01L51/48
CPCH10K71/12H10K85/30H10K30/15Y02E10/549
Inventor 陈庆曾军堂叶任海陈兵
Owner ANHUI HUASUN ENERGY CO LTD
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