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Rare earth ion doped novel perovskite solar cell

A technology of solar cells and rare earth ions, applied in circuits, photovoltaic power generation, electrical components, etc., can solve problems such as poor stability and fast decomposition rate of perovskite light-absorbing layers, and achieve improved stability, improved photoelectric conversion efficiency, and improved The effect of high temperature stability

Active Publication Date: 2021-03-02
HEBEI UNIV OF TECH
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Problems solved by technology

[0005] The invention aims at the problem that the perovskite solar cell has poor long-term stability when placed in the air, and the decomposition rate of the perovskite light absorbing layer is fast and cannot be converted into commercial application.

Method used

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Examples

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Embodiment 1

[0030] A new type of Cs based on rare earth cerium ion doping 2 AgBr 6 Based perovskite solar cells

[0031] (1) Cleaning the transparent conductive glass substrate: In this example, commercial ITO transparent conductive glass is used as the substrate, and the average light transmittance is 90%. Sonicate the ITO glass with glass cleaner, deionized water and ethanol for 15 minutes, then dry it in an oven, and finally treat it in UV-ozone for 30 minutes. The whole process is to clean the surface of the ITO glass; the device structure is ITO;

[0032] (2) Preparation of electron transport layer: Spin-coat tin dioxide on the ITO substrate after ozone treatment, the volume ratio of SnO 2 : water = 1:6), the rotation speed is 4000rpm, an electron transport layer of 30nm is formed, and annealed at 100 for 30 minutes, the resulting structure is ITO / SnO 2 ;

[0033] (3) Preparation of perovskite light absorbing layer: in ITO / SnO 2 On the substrate, a thickness of 400nm 1% Ce was p...

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Abstract

The invention discloses a rare earth ion doped novel perovskite solar cell, and belongs to the field of novel photovoltaic solar cells. The perovskite solar cell device structure sequentially comprises a counter electrode (Au), a hole transport layer (SpiroOMeTAD), a perovskite light absorption layer (Cs2AgBiBr6), an electron transport layer (SnO2) and a transparent conductive glass substrate (ITO) from top to bottom, wherein the rare earth ions are cerium, ytterbium and the like. On the original basis of a traditional FTO / SnO2 / Cs2AgBiBr6 / Spiro-OMeTAD / Au device structure, rare earth is doped into the Cs2AgBiBr6 perovskite light absorption layer, the forbidden band width can be reduced, the spectral absorption range can be widened, then the photoelectric conversion efficiency of the perovskite solar cell is improved, and the device high-temperature stability is effectively improved.

Description

technical field [0001] The technical solution of the present invention is a novel perovskite solar cell doped with rare earth ions, which belongs to the field of novel photovoltaic solar cells. Background technique [0002] With the burning of fossil fuels causing environmental pollution and the reduction of non-renewable resources, the development of renewable new energy sources to replace traditional fossil fuels has become a research hotspot in the field of global energy and environment. Renewable energy includes solar energy, water energy, wind energy, biomass energy, wave energy, tidal energy, ocean temperature difference energy, geothermal energy, etc. They are recyclable in nature and are essential for the sustainable development of society and the environment. Solar energy is the most widely distributed of all energy sources. The conversion of solar energy into electrical energy can effectively alleviate the energy crisis; at the same time, solar energy is clean, eff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/44H01L51/46H01L51/48
CPCH10K71/00H10K85/00H10K30/10H10K30/80Y02E10/549
Inventor 陈聪商雪妮郑士建孟凡斌张炜
Owner HEBEI UNIV OF TECH
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