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Photovoltaic cell with high energy conversion efficiency and long service life

A photovoltaic cell and ultraviolet light technology, which is applied in the field of solar cells, can solve the problems of reducing the life of perovskite solar cells and other problems, and achieve the effects of being beneficial to collection, excellent in electrical conductivity and simple in preparation method.

Active Publication Date: 2018-11-13
四川泰川新能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although most of the deep-ultraviolet and mid-ultraviolet light are absorbed by the conductive glass, part of the near-ultraviolet light can still reach the perovskite light-absorbing layer of the battery, and irradiate on the perovskite light-absorbing layer, causing organic and inorganic impurities. The perovskite light absorbing layer material decomposes, denatures or ages, resulting in a reduction in the life of the perovskite solar cell

Method used

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  • Photovoltaic cell with high energy conversion efficiency and long service life
  • Photovoltaic cell with high energy conversion efficiency and long service life
  • Photovoltaic cell with high energy conversion efficiency and long service life

Examples

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Embodiment 1

[0039] A perovskite photovoltaic cell based on an ultraviolet light shielding layer, including an ITO conductive glass substrate, an ultraviolet light shielding layer, a hole transport layer, a perovskite light absorbing layer, an electron transport layer and a reflective electrode. Cell preparation was carried out as follows.

[0040] (1) ITO conductive glass substrate cleaning:

[0041] An ITO glass substrate (available on the market) is provided, etched into a desired pattern and cut, ultrasonically cleaned with acetone, isopropanol, and deionized water for 20 minutes, dried with nitrogen, and then irradiated with ultraviolet light for 20 minutes before use.

[0042] (2) Prepare the UV shielding layer on the ITO conductive glass substrate:

[0043]Put the above-mentioned ITO conductive glass substrate into a vacuum coating machine, evacuate until the vacuum degree is less than 5×10-4Pa, start to prepare the ultraviolet light shielding layer, set the number of m-MTDATA / F16C...

Embodiment 2

[0054] A perovskite photovoltaic cell based on an ultraviolet light shielding layer, including an ITO conductive glass substrate, an ultraviolet light shielding layer, a hole transport layer, a perovskite light absorbing layer, an electron transport layer and a reflective electrode. Cell preparation was carried out as follows.

[0055] (1) ITO conductive glass substrate cleaning:

[0056] Same as embodiment one.

[0057] (2) Prepare the UV shielding layer on the ITO conductive glass substrate:

[0058] Put the above-mentioned ITO conductive glass substrate into a vacuum coating machine, evacuate until the vacuum degree is less than 5×10-4Pa, start to prepare the ultraviolet light shielding layer, set the number of m-MTDATA / F16CuPc heterojunction N=10, and deposit 5nm first Deposit 5nm of m-MTDATA on the F16CuPc, as a unit, continue to deposit 5nm of F16CuPc, and then deposit 5nm of m-MTDATA, as the second unit... Deposit 10 times in total, and obtain 10 m-MTDATA5nm / UV shie...

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Abstract

The invention discloses a photovoltaic cell with high energy conversion efficiency and a long service life. The photovoltaic cell is formed by an ITO conductive glass substrate, a ultraviolet light shielding layer, a hole transport layer, a perovskite light absorbing layer, an electron transport layer and a reflective electrode. The ultraviolet light shielding layer is composed of N m-MTDATA / F16CuPc heterojunctions which are successively stacked. In the invention, the service life of the perovskite photovoltaic cell can be greatly prolonged.

Description

technical field [0001] The invention relates to the technical field of solar cells, in particular to a photovoltaic cell with high energy conversion efficiency and long service life. Background technique [0002] Perovskite solar cells have received great attention from scientific research and industry due to their low cost, good performance, and simple preparation. Perovskite materials have been used in solar cells since 2009, and the efficiency has reached nearly 20%. Perovskite solar cells are low-cost thin-film solar cells that have developed very rapidly in recent years. The core of the perovskite solar cell structure is an organometallic halide light-absorbing material with a perovskite crystal form (ABX3). In this perovskite ABX3 structure, A is a methylamino group (CH3NH3), B is a metal lead atom, and X is a halogen atom such as chlorine, bromine, or iodine. At present, in high-efficiency perovskite-type solar cells, the most common perovskite material is lead met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/44H01L51/42
CPCH10K71/00H10K30/10H10K30/80H10K30/00Y02E10/549Y02P70/50
Inventor 不公告发明人
Owner 四川泰川新能源有限公司