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A perovskite solar cell with a sulfurized composite electron transport layer structure

An electron transport layer, solar cell technology, applied in circuits, electrical components, photovoltaic power generation, etc., can solve the problems of restricting the long-term development of perovskite solar cells, destroying the perovskite layer, and low electron mobility, and achieving a simple preparation method. The effect of fast, inhibiting interface charge recombination, and accelerating the transmission of electrons

Active Publication Date: 2020-07-31
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

TiO 2 The electron transport layer is widely used in perovskite solar cells, but its low electron mobility restricts the rapid development of perovskite solar cells; under ultraviolet light, the desorption of oxygen molecules on its surface causes device instability Sex issues remain unresolved
compared to TiO 2 , ZnO has higher electron mobility, but the surface alkalinity of ZnO in perovskite solar cell devices will destroy the perovskite layer and cause device degradation

Method used

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  • A perovskite solar cell with a sulfurized composite electron transport layer structure
  • A perovskite solar cell with a sulfurized composite electron transport layer structure
  • A perovskite solar cell with a sulfurized composite electron transport layer structure

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Embodiment 1

[0027] The perovskite solar cell of the invention comprises a transparent conductive substrate, a sulfide composite electron transport layer, a perovskite light absorption layer, a hole transport layer and a back electrode that are stacked in sequence. The perovskite solar cells with this structure can form a reasonable energy level matching and can effectively conduct charges.

[0028] Preferably, the perovskite light-absorbing layer is a perovskite polycrystalline film. The perovskite polycrystalline film has high quality, good energy level matching and low cost.

[0029] Preferably, the hole transport layer material is spiro-OMeTAD. The energy level matching of spiro-OMeTAD and the perovskite light-absorbing layer is better, and at the same time, it can effectively transport holes to the back electrode layer, thereby ensuring high photoelectric conversion efficiency.

[0030] The preparation method of the present embodiment is:

[0031] First, a dense layer of ZnO is pre...

Embodiment 2

[0037] The perovskite solar cell of the invention comprises a transparent conductive substrate, a sulfide composite electron transport layer, a perovskite light absorption layer, a hole transport layer and a back electrode that are stacked in sequence. The perovskite solar cells with this structure can form a reasonable energy level matching and can effectively conduct charges.

[0038] Preferably, the perovskite light-absorbing layer is a perovskite polycrystalline film. The perovskite polycrystalline film has high quality, good energy level matching and low cost.

[0039] Preferably, the hole transport layer material is spiro-OMeTAD. The energy level matching of spiro-OMeTAD and the perovskite light-absorbing layer is better, and at the same time, it can effectively transport holes to the back electrode layer, thereby ensuring high photoelectric conversion efficiency.

[0040] The preparation method of the present embodiment is:

[0041] First, a dense layer of ZnO is pre...

Embodiment 3

[0046] The perovskite solar cell of the invention comprises a transparent conductive substrate, a sulfide composite electron transport layer, a perovskite light absorption layer, a hole transport layer and a back electrode that are stacked in sequence. The perovskite solar cells with this structure can form a reasonable energy level matching and can effectively conduct charges.

[0047] Preferably, the perovskite light-absorbing layer is a perovskite polycrystalline film. The perovskite polycrystalline film has high quality, good energy level matching and low cost.

[0048] Preferably, the hole transport layer material is spiro-OMeTAD. The energy level matching of spiro-OMeTAD and the perovskite light-absorbing layer is better, and at the same time, it can effectively transport holes to the back electrode layer, thereby ensuring high photoelectric conversion efficiency.

[0049] The preparation method of the present embodiment is:

[0050] First, a dense layer of ZnO is pre...

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Abstract

The invention relates to a perovskite solar cell with a vulcanized composite electron transport layer structure, relating to the perovskite solar cell. It includes a conductive substrate, a sulfurized composite electron transport layer, a perovskite light absorbing layer, a hole transport layer and a back electrode stacked in sequence; the sulfurized composite electron transport layer is composed of a ZnO layer and a ZnS layer, and ZnS is between ZnO and perovskite Between the light-absorbing layers. The invention has the advantages of high efficiency, small hysteresis, long service life and the like, and the preparation method of the vulcanized composite electron transport layer is simple, quick and has high repeatability. It can form a reasonable energy level matching and can effectively conduct charges.

Description

technical field [0001] The invention relates to a perovskite solar cell, in particular to a perovskite solar cell with a sulfide composite electron transport layer structure. Background technique [0002] In the photovoltaic industry, the photoelectric conversion efficiency (PCE) of perovskite solar cells rapidly climbed from 3.8% to the currently certified 22.7% in 8 years, instantly becoming a shining star. This rapid development is mainly due to the advantages of high photoelectric conversion efficiency, low fabrication cost, and relatively simple process of perovskite solar cells. Therefore, the research on this subject has become the frontier and hotspot of research at home and abroad in recent years. The general structure of perovskite solar cells includes: transparent conductive substrate, electron transport layer, perovskite light absorption layer, hole transport layer and back electrode. When illuminated by sunlight, electrons and holes are separated at the perovs...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/42
CPCH10K30/10H10K30/65Y02E10/549
Inventor 郑南峰陈睿豪曹靖吴炳辉
Owner XIAMEN UNIV
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