Perovskite solar cell and preparation method thereof

A solar cell and perovskite technology, applied in the field of solar cells, can solve problems such as the difficulty of realizing perovskite cells, and achieve the effects of improving photoelectric conversion efficiency, strong ultraviolet absorption, and good stability

Inactive Publication Date: 2017-07-04
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved in the present invention is: to overcome the technical problem that the perovskite battery in the prior art is difficult to realize in commercial application, and to provide a perovskite solar cell and its preparation method

Method used

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  • Perovskite solar cell and preparation method thereof
  • Perovskite solar cell and preparation method thereof
  • Perovskite solar cell and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Step 1: Preparation of the conductive glass substrate: ultrasonically clean the FTO transparent conductive glass in washing powder, deionized water, acetone and absolute ethanol for 20 minutes in sequence, and perform oxygen plasma on the FTO transparent conductive glass after drying with nitrogen. body treatment for 10 minutes.

[0033] Step 2: Preparation of the electron transport layer: using a high concentration of Ticl 4 (200 mM) aqueous solution soaking method to prepare TiO2 The dense layer was kept at 70 °C for 1 h, washed with water and ethanol in turn, dried with nitrogen and kept at 100 °C for 1 h, and naturally cooled to room temperature to obtain TiO 2 Dense layer, where Ticl 4 The preparation method of the aqueous solution is as follows: 2.3 ml of Ticl 4 Dissolve in 100 ml of water and stir evenly. Among them, the key in step 2 is Ticl 4 The preparation of aqueous solution and the treatment process after immersion, this step is to TiO 2 The ability to...

Embodiment 2

[0038] The difference between this example and example 1 is: the content of PVA added in the precursor solution in step 3 is 3 mg mL -1 , the rest of the steps are the same as in Example 1.

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Abstract

The invention relates to a perovskite solar cell and a preparation method thereof. By adding an appropriate amount of polyvinyl alcohol (PVA) into a precursor liquid, the thin film morphology of a perovskite layer is improved, the service lifetime of a photo-induced carrier is prolonged, and the photoelectric conversion efficiency of the cell is effectively improved; due to the water absorption performance of the PVA, the humidity stability of the material is also substantially improved by appropriate addition, so that long-term and stable-efficiency output of the perovskite solar cell in a high humidity environment is maintained; and meanwhile, such type of a water soluble polymer material which is used is low in cost, and large-area application of the cell is facilitated.

Description

technical field [0001] The invention relates to the technical field of solar cells, in particular to a perovskite solar cell and a preparation method thereof. Background technique [0002] Energy supply and environmental impact have become one of the greatest challenges faced by mankind since the 21st century, and the effective use of renewable resources is the only way for sustainable energy development. As the price of solar cells drops, more and more researchers are joining the ranks of photovoltaics. Organic, inorganic, and hybrid perovskite materials have shown excellent performance in the fields of optoelectronic materials, lasers, light-emitting devices, and photodetectors, which has attracted widespread attention and in-depth research at home and abroad. Its advantages are very prominent: 1. Excellent light absorption performance; 2. Long carrier diffusion length; 3. Long carrier lifetime; 4. Small exciton binding energy. Perovskite solar cells are a new type of or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/48
CPCH10K71/12H10K71/40H10K30/151Y02E10/549
Inventor 丁建宁袁宁一孙越俞强
Owner CHANGZHOU UNIV
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