Perovskite solar cell preparation method

A solar cell and perovskite technology, applied in the field of solar cells, can solve problems such as high preparation requirements, low output voltage and short-circuit current, poor device performance and stability, etc., and achieve simple operation, increased open circuit voltage, and improved service life Effect

Inactive Publication Date: 2015-11-18
SUZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Technical problem to be solved: Aiming at the shortcomings of traditional perovskite film preparation requirements, low output voltage and short-circuit current, poor device performance and stability, the

Method used

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Examples

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Embodiment 1

[0031] A preparation method for a perovskite solar cell, characterized in that the preparation steps are as follows:

[0032] (1) Cleaning and ozone treatment of ITO substrates: After scrubbing the ITO substrates with detergent, place the ITO substrates in deionized water, ethanol, acetone, and deionized water in sequence, ultrasonic cleaning for 12 minutes each time, and then Blow dry with a nitrogen gun, and then put the ITO substrate into an ozone machine for ozone treatment for 12 minutes;

[0033] (2) Spin coating of hole transport layer (PEDOT:PSS): Spin coat a layer of hole transport layer on the surface of the ITO substrate after ozone treatment, control the speed at 4000rpm, time is 40s, and then perform annealing treatment, controlled annealing The temperature is 100°C, the annealing time is 40min, and the substrate A is obtained;

[0034] (3) CH doped with water 3 NH 3 PB 3-x Cl x Precursor solution configuration: NH 3 CH 3 I and PbI 2 Mix and dissolve in N,...

Embodiment 2

[0040] The difference between Example 2 and Example 1 is that 2% by volume of water is added in step (3), and the rest of the steps are the same as in Example 1.

Embodiment 3

[0042] The difference between Example 3 and Example 1 is that 3% by volume of water is added in step (3), and the rest of the steps are the same as in Example 1.

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Abstract

The invention provides a perovskite solar cell preparation method. The preparation method comprises the following steps: (1) substrate cleaning and ozone treatment are carried out; (2) spin coating of a hole transport layer is carried out; (3) a water-doped CH3NH3PbI3-xClx precursory solution is prepared; (4) spin coating of the CH3NH3PbI3-xClx precursory solution is carried out; (5) spin coating of an electron transport layer is carried out; (6) spin coating of an interface modification layer is carried out; and (7) vacuum evaporation of a metal cathode is carried out, and thus, a perovskite solar cell is obtained. The perovskite solar cell obtained by the preparation method provided by the invention has the advantages of high photoelectric conversion efficiency and good cell stability.

Description

technical field [0001] The invention belongs to the field of solar cells, in particular to a method for controlling CH based on water doping 3 NH 3 PB 3-x Cl x Preparation of crystalline high-efficiency perovskite solar cells. Background technique [0002] Organic-inorganic halide perovskite is a low-cost, easy-to-prepare new light-absorbing layer material for solar cells. This organometallic halide with a perovskite structure has a long carrier life, good light absorption And bipolar transmission characteristics, in just a few years, its photoelectric conversion efficiency has increased from the initial 3.8% to the current 20.1%. [0003] At present, the relatively simple and efficient preparation method is based on CH 3 NH 3 PB 3 (or CH 3 NH 3 PB 3-x Cl x ) system as the representative planar structure battery, among which the simpler one-step solution method is often used as the preferred method for preparing the system. However for CH 3 NH 3 PB 3 (MAPbI 3...

Claims

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Application Information

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IPC IPC(8): H01L51/48
CPCH10K30/00Y02E10/549
Inventor 王照奎廖良生龚秀
Owner SUZHOU UNIV
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