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Perovskite solar cell and preparation method thereof

A solar cell and perovskite technology, applied in the field of solar cells, can solve the problems of hysteresis and instability of perovskite solar cells, and achieve the effects of improving performance, high photoelectric conversion efficiency, and high electron mobility.

Pending Publication Date: 2020-07-24
ZHEJIANG NORMAL UNIVERSITY
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Problems solved by technology

Despite the excellent performance of perovskite solar cells, many planar perovskite solar cells are still unstable and suffer from severe hysteresis due to ion migration and interfacial defects in the devices

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

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Embodiment Construction

[0024] See attached picture. Traditional perovskite solar cell structures such as figure 1 As shown, the perovskite solar cell includes a substrate, a cathode, a cathode modification layer, a perovskite light absorption layer, an anode modification layer, and an anode; the substrate is glass, the cathode is ITO, and the cathode modification layer is SnO 2 thin film, the perovskite light absorbing layer is (FAPbI 3 ) 0.97 (MAPbBr 3 ) 0.03 , the anode modification layer Spiro-OMeTAD and MoO 3 , the anode is silver.

[0025] This embodiment provides a perovskite solar cell, such as figure 2 As shown, the perovskite solar cell includes sequentially arranged ITO glass, cathode modification layer PVP-SnO 2 , perovskite light absorbing layer (FAPbI 3 ) 0.97 (MAPbBr 3 ) 0.03 , the first anode modification layer Spiro-OMeTAD, the second anode modification layer MoO 3 and the silver electrode Ag. Wherein, the cathode modification layer is PVP-doped SnO 2 film.

[0026] ...

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Abstract

The invention discloses a perovskite solar cell and a preparation method thereof. The perovskite solar cell structurally comprises glass, a cathode ITO, a cathode modification layer PVP-SnO2, a perovskite light absorption layer (FAPbI3) 0.97 (MAPbBr3) 0.03, a first anode modification layer Spiro-OMeTAD, a second anode modification layer MoO3 and anode silver from bottom to top. According to the invention, PVP is added into SnO2 for doping, the electron transport performance of the perovskite solar cell can be improved, and the electron mobility of PVP-SnO2 is higher than that of pure SnO2, sothat the photoelectric conversion performance of the solar cell is improved, and a relatively small hysteresis phenomenon is shown.

Description

technical field [0001] The invention belongs to the field of solar cells, in particular to a perovskite solar cell and a preparation method thereof. Background technique [0002] Perovskite solar cells with simple planar structures, which have the advantages of high efficiency, low cost, and easy processing, have become one of the most competitive and promising next-generation photovoltaic technologies in the future. Due to their high absorption coefficient and long carrier diffusion length, the power conversion efficiency of perovskite solar cells has rapidly increased from 3.8% to over 20% within 10 years. Despite the outstanding performance of perovskite solar cells, many planar perovskite solar cells are still unstable and suffer from severe hysteresis due to ion migration and interfacial defects in the devices. The research shows that changing the interface between the perovskite layer and the electron-transporting layer can largely eliminate hysteresis in perovskite s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/46H01L51/42H01L51/44H01L51/48
CPCH10K71/12H10K30/81H10K30/30H10K2102/00Y02E10/549
Inventor 黄仕华张美影李林华
Owner ZHEJIANG NORMAL UNIVERSITY
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