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All-printed mesoscopic perovskite solar cell adopting carbonyl small molecules as additive and preparation method thereof

A solar cell and small molecule technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of complex process, difficult to manufacture uniform large-area battery devices, high cost, and achieve poor process repeatability and good industrialization. Prospects, the effect of improving yield

Active Publication Date: 2020-06-02
GUILIN UNIV OF ELECTRONIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, traditional perovskite solar cells still have complex processes and are difficult to mass-produce, each cell device is relatively independent, depending on each operation process, it is not easy to manufacture uniform large-area cell devices and requires the use of expensive hole materials, Precious metals are used as electrode materials, and the inevitable problems such as relatively high cost make it difficult for industrial production and practical commercial use

Method used

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  • All-printed mesoscopic perovskite solar cell adopting carbonyl small molecules as additive and preparation method thereof
  • All-printed mesoscopic perovskite solar cell adopting carbonyl small molecules as additive and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0021] In this embodiment, the cathode layer is FTO, the substrate is a glass sheet, and the oxide dense layer is TiO 2 , the porous electron transport layer is TiO 2 , the porous barrier layer is ZrO, and the precursor solution of the perovskite film is added with 6% molar ratio of ethylene carbonate as an additive.

[0022] The preparation method comprises the following steps:

[0023] 1. After cleaning the etched conductive glass sheet covered with FTO cathode layer 1, use a dispersion sprayer to evenly spray the prepared titanium dioxide precursor solution on the surface of FTO and anneal at 450°C for 30 minutes to fully crystallize it, forming a thickness of 80nm Uniform and dense oxide dense layer, the surface of the unfinished device cooled to room temperature is blown with nitrogen, and 500nm TiO is sequentially printed on a screen printing machine 2 thin film, 3 μm ZrO thin film and 10 μm carbon thin film.

[0024] 2. Prepare a precursor solution mixed into the per...

Embodiment 2

[0028] Referring to Example 1, the difference is that rhodanine is substituted for ethylene carbonate.

[0029] J-V test was carried out on the obtained perovskite solar cells. The average photoelectric conversion efficiency of the perovskite solar cells using rhodanine with a concentration of 3% molar ratio as an additive was 12.54%, and the current density of the optimal device was 24.51mA cm -2 , the open circuit voltage is 0.87V, the fill factor is 62.23%, and the photoelectric conversion efficiency is 13.27%.

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Abstract

The invention discloses an all-printed mesoscopic perovskite solar cell adopting carbonyl small molecules as an additive. The solar cell is arranged on a substrate and comprises a cathode layer, an oxide compact layer, a porous electron transport layer, a porous barrier layer and a porous anode layer which are sequentially stacked on the substrate from bottom to top, wherein a perovskite thin filmis filled in each porous layer; and the carbonyl small molecule additive is introduced into a perovskite precursor solution as a passivation agent and a cross-linking agent for perovskite crystallization, so that the iodine defect of perovskite is passivated, the crystallinity of the perovskite thin film is increased, the yield of the perovskite thin film is improved, and the efficiency of the all-printed mesoscopic perovskite solar cell can be remarkably improved.

Description

Technical field: [0001] The invention relates to an all-printed mesoscopic perovskite solar cell using small carbonyl molecules as additives and a preparation method thereof. Background technique: [0002] The faster the economy develops, the more inseparable it is from the large supply of energy. The problems of climate warming and environmental degradation in the world today have not been effectively solved. The rapid consumption of traditional fossil energy is also a huge challenge we face. Therefore, in the future, human The rapid development of the world will inevitably have a greater demand for environmentally friendly energy. Solar energy is inexhaustible, and does not produce greenhouse gases and secondary pollution during use, which can meet the basic needs of new renewable and clean energy. Solar cells based on the photovoltaic effect can directly convert solar energy into electrical energy, which is conducive to energy transmission and storage, and can adapt to t...

Claims

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Application Information

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IPC IPC(8): H01L51/46H01L51/42H01L51/48
CPCH10K71/12H10K85/30H10K30/30Y02E10/549
Inventor 张坚陈琨刘建
Owner GUILIN UNIV OF ELECTRONIC TECH