Perovskite Thin Film Solar Cells

Abstract

The invention discloses a perovskite thin film solar cell. The perovskite thin-film solar cell includes: stacked multilayer functional layers, one of which is a photoactive layer in the multilayer functional layers, and at least one of the other photoactive layers is removed from the multilayer functional layers. The layer functional layer is configured as a wrapping layer comprising: a wrapping layer body serving as a superposed part and a peripheral layer extending from at least part of an edge of the wrapping layer body, the wrapping layer body and the wrapping layer body The peripheral layer surrounds at least three sides of the photoactive layer. According to the perovskite thin-film solar cell of the present invention, the photoactive layer can be isolated from external moisture and gas by providing a wrapping layer to cover the photoactive layer, thereby ensuring good performance of the photoactive layer and avoiding deterioration of the photoactive layer. In this way, after the photoactive layer absorbs light energy, it can convert light energy into electrical energy to the greatest extent.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a perovskite thin-film solar battery. Background technique [0002] A solar cell deteriorates its own characteristics due to moisture and / or gas introduced from the outside. In particular, hybrid perovskite materials (i.e., photoactive layers) composed of organic / inorganic materials suffer from accelerated degradation by moisture and gases. In the case of flexible substrates, water can directly penetrate the polymer substrate and / or enter the perovskite material layer through the edge sealant. For solar cells sealed with a glass substrate, moisture and gases can be prevented from penetrating the glass substrate, but they can still pass through the edge sealant and enter the perovskite material layer, causing the performance of the perovskite material layer to deteriorate. [0003] In the prior art, the organic / inorganic multilayer thin film encapsulation method has an excelle...

AI Technical Summary

Problems solved by technology

For solar cells sealed with a glass substrate, moisture and gases can be prevented from penetrating the glass substrate, but they can still pass through the edge sealant and enter the perovskite material layer, causing the performance of the perovskite material layer to deteriorate

[0003] In the prior art, the organic / inorganic multilayer thin film encapsulation method has an excellent barrier function to moisture and gas, however, it is still necessary to develop 1) an additional process only for encapsulation, which increases the cost, and 2) the organic / inorganic multilayer thin film is due to Its high reflectivity or high absorptivity to sunlight leads to a decrease in sunlight transmittance and lower photoelectric conversion efficiency

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