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Method of improving efficiency of perovskite solar cell

A solar cell and perovskite technology, applied in the field of solar cells, can solve the problems of poor cell performance and uneven quality of perovskite films, and achieve the effects of excellent cell performance, low cost, and simple operation.

Active Publication Date: 2015-10-07
无锡暄时光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the liquid phase method is easily affected by human operation control, and the quality of the produced perovskite film varies, resulting in poor battery performance.

Method used

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  • Method of improving efficiency of perovskite solar cell
  • Method of improving efficiency of perovskite solar cell
  • Method of improving efficiency of perovskite solar cell

Examples

Experimental program
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Effect test

Embodiment 1

[0019] Prepare 1mol / L PbI 2 N, N-dimethylformamide (N, N-Dimethylformamide, DMF) solution, adding the TBP additive with a purity of 96%, TBP and PbI 2 The volume ratio of the solution is 1:12.5, heated and stirred until completely miscible. Spin-coat this solution onto the prepared dense TiO 2 layer of conductive substrate FTO, heated at a certain temperature, resulting in a porous structure of PbI 2 Membrane, the SEM photo of this membrane is shown in figure 1 . Then soaked in the methyl iodide solution for 2min, and heated at a certain temperature, the reaction product PbI with higher conversion rate was prepared. 2 Less residual CH 3 NH 3 PB 3 (with TBP) perovskite crystal film, the XRD test results of this film are shown in image 3 . Finally, the battery is assembled for the photoelectric performance test of the perovskite solar cell. The results are shown in Table 1.

Embodiment 2

[0023] PbCl 2 and CH 3 NH 3 I is miscible in the solvent DMF with a molar ratio of 1:3, adding TBP additive, the volume ratio of TBP to the mixed solution is 1:12.5, heating and stirring until completely miscible, and is prepared as CH 3 NH 3 PB 3-x Cl x perovskite solution. Spin-coat the prepared perovskite solution onto the prepared dense TiO 2 Layered conductive substrate FTO, heated at a certain temperature, made directional crystallized CH 3 NH 3 PB 3-x Cl x (with TBP) perovskite crystal film, the SEM photo of this film is shown in figure 2 , XRD test results see Figure 4 . The cells were then assembled for photoelectric performance testing of perovskite solar cells. The results are shown in Table 1.

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Abstract

The invention discloses a method of improving efficiency of a perovskite solar cell, which belongs to the technical field of solar cells. Organic micro-molecular 4-tert-butylpyridine serves as an additive and is added to a perovskite precursor solution according to a concentration of 0.4 to 0.8mol / L, a perovskite crystal film is made, and the cell is then made. The perovskite crystal film made by adopting the organic micro-molecular additive of the invention has a better quality, and the efficiency of the perovskite solar cell is significantly improved.

Description

technical field [0001] The invention belongs to the technical field of solar cells and relates to a method for improving the efficiency of perovskite solar cells. Background technique [0002] Energy crisis and environmental pollution are two prominent problems facing the development of human society today. On the one hand, with the continuous consumption of fossil energy, the fossil energy is facing depletion; on the other hand, due to the large amount of carbon dioxide and other harmful substances caused by combustion, the global warming, greenhouse effect and El Niño phenomenon are becoming more and more prominent, and the air quality is seriously declining. , the ecological environment has been severely damaged. One of the effective ways to solve the above problems is to develop and utilize renewable energy. Solar energy, wind energy, biomass energy, tidal energy, etc. are all cheap, clean and environmentally friendly renewable energy sources. Among them, solar energy...

Claims

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Application Information

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IPC IPC(8): H01L31/18H01L31/042
CPCH01L31/042H01L31/1876Y02E10/50Y02P70/50
Inventor 史彦涛王香媛张鸿郝策
Owner 无锡暄时光电科技有限公司
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