Solar cell and method of manufacturing the same, photovoltaic module
By setting a second sublayer rich in coordination groups between the first and third sublayers of perovskite solar cells, the problem of insufficient compactness in metal oxide electron transport materials prepared by ALD is solved, thereby improving the performance and stability of the cells.
CN122180240APending Publication Date: 2026-06-09TRINA SOLAR CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- TRINA SOLAR CO LTD
- Filing Date
- 2026-02-11
- Publication Date
- 2026-06-09
AI Technical Summary
Technical Problem
In existing perovskite solar cells, the metal oxide electron transport materials prepared by the ALD method suffer from insufficient density and incomplete coverage, which affects the cell performance.
Method used
A second sublayer is set between the first and third sublayers. The surface of the second sublayer is distributed with multiple coordination groups, which coordinate with metal atoms in the metal oxide electron transport material to provide nucleation sites and improve film quality and density.
Benefits of technology
By setting a second sublayer with coordinating groups, defects in metal oxide films are reduced, improving the performance and stability of solar cells and enhancing their resistance to external erosion.
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Smart Images
Figure CN122180240A_ABST
Abstract
This application relates to solar cells and their fabrication methods, as well as photovoltaic modules. The aforementioned solar cell includes a first electrode, a first perovskite light-absorbing layer, a first electron transport layer, and a second electrode stacked together. The first electron transport layer comprises a first sublayer, a second sublayer, and a third sublayer stacked sequentially along a direction gradually moving away from the first perovskite light-absorbing layer. The first sublayer includes a first organic electron transport material. The second sublayer has multiple coordinating groups distributed on its surface facing away from the first perovskite light-absorbing layer. The third sublayer includes a first metal oxide electron transport material, and the multiple coordinating groups are capable of coordinating with metal atoms in the first metal oxide electron transport material. By setting the third sublayer, the metal oxide electron transport material film exhibits better uniformity and fewer defects, thereby improving the performance of the solar cell.
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