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Method for preparing interface modified perovskite solar cell through vapor auxiliary solution method

A gas-phase auxiliary solution and solar cell technology, which is applied in the field of solar cells, can solve the problems affecting the photoelectric conversion efficiency of cells, and achieve the effects of improving photoelectric conversion efficiency and electrical performance, reducing hysteresis effect, and improving interface contact

Inactive Publication Date: 2016-05-11
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In addition, electron and hole recombination will also occur between the perovskite film and the interface between other layers of the battery, which will affect the photoelectric conversion efficiency of the battery.

Method used

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  • Method for preparing interface modified perovskite solar cell through vapor auxiliary solution method
  • Method for preparing interface modified perovskite solar cell through vapor auxiliary solution method
  • Method for preparing interface modified perovskite solar cell through vapor auxiliary solution method

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Experimental program
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Effect test

Embodiment 1

[0043] (1) At a speed of 3000rpm, the TiO 2 The solution was spin-coated on a clean FTO substrate and heated at 500°C for 30 minutes to obtain a barrier layer;

[0044] (2) With the rotating speed of 1500rpm, the concentration is 10mg / ml C 60 O-dichlorobenzene solution was spin-coated on the barrier layer, and then heated at 60°C for 2 minutes to obtain an interface modification layer;

[0045] (3) With the rotating speed of 3000rpm, the PbI that concentration is 462mg / mL 2 The DMF solution was spin-coated on the interface modification layer, then heated at 70°C for 30min, cooled naturally, placed in a petri dish, and evenly sprinkled with 0.25g of CH 3 NH 3 1 powder; then put it into a vacuum drying oven, and at a pressure of 10KPa and a temperature of 150°C, react for 30min to generate a perovskite; after natural cooling, use isopropanol to clean, and heat at 150°C for 5min, Obtain a perovskite light absorbing layer;

[0046] (4) Spin-coat the Spiro-OMeTAD solution on t...

Embodiment 2

[0050] (1) At a speed of 3000rpm, the TiO 2 The solution was spin-coated on a clean FTO substrate and heated at 550°C for 25 minutes to obtain a barrier layer;

[0051] (2) With the rotating speed of 1500rpm, the concentration is 2mg / ml C 60 O-dichlorobenzene solution was spin-coated on the barrier layer, and then heated at 60°C for 2 minutes to obtain an interface modification layer;

[0052] (3) With the rotating speed of 3000rpm, the PbI that concentration is 462mg / mL 2 The DMF solution was spin-coated on the interface modification layer, then heated at 70°C for 30min, cooled naturally, placed in a petri dish, and evenly sprinkled with 0.25g of CH 3 NH 3 1 powder; then put it into a vacuum drying oven, and at a pressure of 5KPa and a temperature of 150°C, react for 30min to generate a perovskite; after natural cooling, use isopropanol to clean, and heat at 150°C for 5min, Obtain a perovskite light absorbing layer;

[0053] (4) Spin-coat the Spiro-OMeTAD solution on the...

Embodiment 3

[0057] (1) At a speed of 3000rpm, the TiO 2 The solution was spin-coated on a clean FTO substrate and heated at 500°C for 30 minutes to obtain a barrier layer;

[0058] (2) With the rotating speed of 1500rpm, the concentration is 14mg / ml C 60 O-dichlorobenzene solution was spin-coated on the barrier layer, and then heated at 60°C for 2 minutes to obtain an interface modification layer;

[0059] (3) With the rotating speed of 3000rpm, the PbI that concentration is 462mg / mL 2 The DMF solution was spin-coated on the interface modification layer, then heated at 70°C for 30min, cooled naturally, placed in a petri dish, and evenly sprinkled with 0.25g of CH 3 NH 3 1 powder; then put it into a vacuum drying oven, and at a pressure of 20KPa and a temperature of 150°C, react for 30min to generate a perovskite; after natural cooling, use isopropanol to clean, and heat at 150°C for 5min, Obtain a perovskite light absorbing layer;

[0060] (4) Spin-coat the Spiro-OMeTAD solution on t...

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Abstract

The invention discloses a method for preparing an interface modified perovskite solar cell through a vapor auxiliary solution method, and belongs to the technical field of solar cells. Electron transmission material is spin-coated on a clean FTO substrate, and a barrier layer is obtained through thermal treatment; then a C60 organic solution is spin-coated on the barrier layer, and an interface modification layer is obtained through thermal treatment; a perovskite light absorption layer is prepared on the interface modification layer by using the vapor auxiliary solution method; and finally a hole transmission layer is spin-coated on the perovskite light absorption layer and then vacuum vapor plating of a counter electrode is performed so that the perovskite solar cell is obtained. According to the method, the perovskite light absorption layer is prepared by using the vapor auxiliary solution method, and the interface between the barrier layer and the perovskite light absorption layer is modified so that the retardation effect of the perovskite solar cell can be reduced and photoelectric conversion efficiency and electrical performance of the perovskite solar cell can be enhanced.

Description

technical field [0001] The invention belongs to the technical field of solar cells, and in particular relates to a method for preparing an interface-modified perovskite solar cell by a gas-phase assisted solution method. Background technique [0002] Traditional silicon solar cells have mature technology, stable performance, and are widely used, but there are problems such as difficulty in improving photoelectric conversion efficiency, easy to cause environmental pollution, and high production costs. Therefore, there is a need to prepare new solar cells with low cost, environmental friendliness and high efficiency. [0003] Perovskite material ABX 3 Due to the advantages of simple synthesis, low cost, high absorption coefficient, and adjustable band gap, it has attracted extensive attention. Perovskite solar cells have developed very rapidly in recent years, and their photoelectric conversion efficiency has increased rapidly from about 5% in 2009 to more than 20%, which ha...

Claims

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Application Information

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IPC IPC(8): H01L51/42H01L51/46H01L51/48
CPCH10K71/12H10K85/211H10K30/15Y02E10/549
Inventor 姚建曦许佳周正银坚戴松元张兵胡林华孔凡太
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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