Method for manufacturing high-performance perovskite solar energy cell in humid air

A technology of solar cells and humid air, applied in the field of solar cells, to achieve high photoelectric conversion efficiency, simple operation, and low cost

Active Publication Date: 2016-10-12
SOUTH CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, TiO prepared by low-temperature solution method 2 planar structure CH 3 NH 3 PB 3-x (SCN) x Perovskite-based solar cells have not been reported

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] In this embodiment, a method for preparing a high-efficiency perovskite solar cell in humid air includes the following steps:

[0030] (1) Add 5ml of titanium tetrachloride solution to 200ml of ice-water mixture to form TiO 2 colloid;

[0031] (2) After irradiating the clean FTO conductive glass with a UV lamp for 15 minutes, put it into TiO at a temperature of 70°C 2 Soak in the colloid solution for 60min, then take it out and wash it, then heat treat it at 200°C for 30min to get TiO 2 Dense layer;

[0032] (3) Pb(SCN) 2 Dissolved in methyl sulfoxide, configured into a solution with a concentration of 0.5g / ml, the TiO prepared in step (2) 2 Spin Coating Pb(SCN) on Dense Layer 2 solution, and then heat treated at 90°C for 30min to obtain Pb(SCN) 2 membrane;

[0033] (4) on Pb(SCN) 2 Spin-coat a 10 mg / ml isopropanol solution of methyl iodide on the membrane at a speed of 3000 r / min.

[0034] (5) After repeating step (4) 6 times, the prepared film was heat-treate...

Embodiment 2

[0039] In this embodiment, a method for preparing a high-efficiency perovskite solar cell in humid air includes the following steps:

[0040] (1) Add 5ml of titanium tetrachloride solution to 200ml of ice-water mixture to form TiO 2 colloid;

[0041] (2) After irradiating the cleaned FTO conductive glass with a UV lamp for 30 minutes, put it into TiO at a temperature of 70°C 2 Soak in the colloid solution for 40min, then take it out and wash it, then heat treat it at 190°C for 40min to get TiO 2 Dense layer;

[0042] (3) Pb(SCN) 2 Dissolved in methyl sulfoxide, configured into a solution with a concentration of 0.6g / ml, the TiO prepared in step (2) 2 Spin Coating Pb(SCN) on Dense Layer 2 solution, and then heat treated at 90°C for 60min to obtain Pb(SCN) 2 membrane;

[0043] (4) on Pb(SCN) 2 Spin-coat a 10 mg / ml isopropanol solution of methyl iodide on the membrane at a speed of 4000 r / min.

[0044] (5) After repeating step (4) 8 times, the prepared film was heat-trea...

Embodiment 3

[0049] In this embodiment, a method for preparing a high-efficiency perovskite solar cell in humid air includes the following steps:

[0050] (1) Add 3ml of titanium tetrachloride solution to 200ml of ice-water mixture to form TiO 2 colloid;

[0051] (2) After irradiating the cleaned FTO conductive glass with a UV lamp for 10 minutes, put it into TiO at a temperature of 70°C 2 Soak in the colloid solution for 70min, then take it out and wash it, then heat treat it at 180°C for 60min to get TiO 2 Dense layer;

[0052] (3) Pb(SCN) 2 Dissolved in methyl sulfoxide, configured into a solution with a concentration of 0.3g / ml, the TiO prepared in step (2) 2 Spin Coating Pb(SCN) on Dense Layer 2 solution, and then heat treated at 90°C for 60min to obtain Pb(SCN) 2 membrane;

[0053] (4) on Pb(SCN) 2 Spin-coat a 10 mg / ml isopropanol solution of methyl iodide on the membrane at a speed of 5000 r / min.

[0054] (5) After repeating step (4) 10 times, the prepared film was heat-tre...

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Abstract

The invention discloses a method for manufacturing a high-performance planar structure CH3NH3PbI3-X(SCN)x-based perovskite solar energy cell in the humid air. The method comprises steps that hydrolysis of titanium tetrachloride solution is firstly carried out to acquire TiO2 colloid, the colloid acquired through hydrolysis of the titanium tetrachloride solution is deposited on FTO electro-conductive glass to acquire a TiO2 compact layer, a CH3NH3PbI3-X(SCN)x perovskite layer is prepared on the TiO2 compact layer by employing a two-step solution method, a cavity conduction layer is coated on the perovskite layer in a spinning mode, a Ag electrode is prepared through thermal evaporation, and the perovskite cell is finally acquired. Compared with the prior art, the method is advantaged in that the production process is simple, and cost is low.

Description

technical field [0001] The invention belongs to the field of solar cells, in particular to a method for preparing high-efficiency perovskite solar cells (referred to as perovskite cells) by using a low-temperature solution method in humid air. Background technique [0002] In recent years, perovskite solar cells have attracted much attention due to their high photoelectric conversion efficiency. Currently, it is reported that the highest conversion efficiency of perovskite cell experiments has exceeded 20% (Yang W S, Noh J H, Jeon N J, et al. High-performance photovoltaic perovskite layers fabricated through intramolecular exchange. Science, 2015: aaa9272). However, CH 3 NH 3 wxya 3 The (halogen) perovskite layer has poor stability in humid air and needs to be prepared in an inert gas environment with low humidity, and the inert gas glove box is expensive. And if perovskite solar cells can be prepared directly in humid air, not only can the cost of the battery be reduced...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/48
CPCH10K71/12H10K30/00Y02E10/549
Inventor 吴素娟张宗宝蔡洋洋陆旭兵刘俊明
Owner SOUTH CHINA NORMAL UNIVERSITY
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