Perovskite photovoltaic device and preparation method thereof

By integrating a barrier and sacrificial layer with flexible plastic substrates, the calcium titanate photovoltaic devices overcome structural rigidity and moisture sensitivity issues, enabling their use in lightweight and flexible applications.

CN120322090APending Publication Date: 2025-07-15GUANGDONG GUANGYI INTELLIGENT MANUFACTURING TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202510260494.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-03-05
Publication Date
2025-07-15

AI Technical Summary

Technical Problem

The existing perovskite photovoltaic devices are subject to traditional preparation processes, resulting in limitations in their application scenarios, especially in thin and flexible application scenarios.

Method used

By providing a barrier layer and a sacrificial layer between the substrate and the first electrode layer, the barrier layer adopts an inorganic oxide or an inorganic/organic multi-layer structure, the sacrificial layer adopts an organic polymer to prevent water and oxygen penetration, and protects the barrier layer during the etching process, and combines a flexible plastic substrate as the substrate to prepare a light and thin flexible perovskite photovoltaic device.

Benefits of technology

Effectively prevent perovskite material decomposition, improve device life, reduce electrode deposition defects, enhance electrical performance, and expand applications to scenarios such as flexible wearable devices, integrated building photovoltaics and mobile devices.

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Abstract

The embodiment of the invention provides a perovskite photovoltaic device and a preparation method thereof, the perovskite photovoltaic device comprises a substrate, a first electrode layer, a functional layer and a second electrode layer which are stacked in sequence, and the functional layer comprises a light absorption layer and an electron transport layer and a hole transport layer which are respectively located at two sides of the light absorption layer; a barrier layer and a sacrificial layer are arranged between the substrate and the first electrode layer, the barrier layer is arranged on the substrate, and the sacrificial layer is arranged between the barrier layer and the first electrode layer. According to the perovskite photovoltaic device and the preparation method thereof provided by the embodiment of the invention, the barrier layer and the sacrificial layer are additionally arranged, and the barrier layer can effectively prevent external moisture and oxygen from permeating into the internal structure of the perovskite photovoltaic device through the substrate; the existence of the sacrificial layer can effectively prevent the substrate from being damaged when the functional layer is deposited, and the sacrificial layer can absorb the stress during bending, thereby reducing the mechanical damage of the perovskite layer and the electrode, and expanding the application scene.
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