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Composite laminated perovskite solar cell and manufacturing method therefor

A technology of solar cells and composite stacking, applied in the field of solar cells, can solve the problems that restrict the process of industrialization development and the complex preparation process of multi-junction solar cells

Inactive Publication Date: 2017-02-22
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

In order to prevent the reverse bias between each sub-cell, it is necessary to add an ultra-thin tunnel junction in each sub-cell to realize the transport of carriers, coupled with the preparation of each sub-cell, leading to the preparation of multi-junction solar cells The process is very complicated, which restricts the process of its industrialization development

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  • Composite laminated perovskite solar cell and manufacturing method therefor

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Embodiment Construction

[0016] The present invention will be further described in detail in conjunction with the accompanying drawings and specific embodiments.

[0017] like figure 1 Shown: from bottom to top are glass substrate, conductive glass FTO, electron transport layer TiO 2 , the first perovskite light-absorbing layer CH 3 NH 3 PbBr 3 , the second perovskite light-absorbing layer CH 3 NH 3 PB 3 , the third perovskite light-absorbing layer FAPbI 3 , hole transport layer Spiro-MeOTAD and metal electrodes. The thickness of the glass substrate and conductive glass FTO is 200nm, the thickness of the electron transport layer is 80nm, the thickness of the hole transport layer is 100nm, CH 3 NH 3 PbBr 3 Layer thickness 130nm, CH 3 NH 3 PB 3 Layer thickness 130nm, FAPbI 3 The thickness of the layer is 140nm, and the total thickness of the laminated perovskite light-absorbing layer is 400nm. The metal Ag electrode has a thickness of 100 nm.

[0018] Step 1. Preparation of transparent e...

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Abstract

The invention belongs to the field of solar cells, and specifically relates to a composite laminated perovskite solar cell and a manufacturing method therefor. According to the invention, CH3NH3PbBr3, CH3NH3PbI3 and NH2CHNH2PbI3 are prepared together according to a degressive sequence of band gap from the top to the bottom, and a composite laminated perovskite light-absorption layer. The introduction of the composite laminated perovskite light-absorption layer remarkably enlarges the spectral response range of the perovskite solar cell to natural light, improves the carrier concentration, and further improves the photoelectric conversion efficiency of the cell. Meanwhile, the main function of the perovskite light-absorption layer is to generate an electron-hole pair, and the generated electron-hole pair can be conducted by an electron transmission layer and a hole transmission layer through an external electrode. Compared with a conventional multijunction solar cell, no multistage solar cell is needed, and no tunnel junction needs to be introduced, thereby simplifying the preparation technology.

Description

technical field [0001] The invention belongs to the field of solar cells, and in particular relates to a perovskite solar cell with a composite laminated structure and a preparation method thereof. Background technique [0002] With the depletion of fossil energy and the increasing energy crisis, the development and utilization of clean and renewable energy has become a hot issue of global concern in the 21st century. Among them, photovoltaic solar cells have become the focus of the development of renewable energy due to their advantages of high efficiency, cleanliness, and no pollution. Photovoltaic solar cells are devices that use the photovoltaic effect of semiconductors to convert the light energy of solar radiation into electrical energy. From the distinction of structure and raw materials, photovoltaic solar cells have experienced the development process from crystalline silicon cells to thin-film solar cells to multi-junction solar cells. Crystalline silicon cells h...

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Application Information

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IPC IPC(8): H01L51/46H01L51/42H01L51/48
CPCH10K71/12H10K85/30H10K30/151Y02E10/549
Inventor 向勇兰洵
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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