Groove filling method of solar cell module

• Main Authors: MA LIYUN, CHEN YING, CHU JINGYUAN, PENG SHOU, SONG JIELIN, GU NA
• Format: Patent
• Language: Chinese; English
• Published: 18.10.2022
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; SEMICONDUCTOR DEVICES

The invention provides a notch groove filling method of a solar cell module. The method comprises the following steps: preparing a solar cell film which sequentially comprises a glass substrate, a transparent conductive layer, an N-type window layer and a P-type absorption layer; etching the film surface of the solar cell film to form an etching groove; coating a negative photoresist layer on the film surface; wherein a photosensitizer is added into the negative photoresist layer, and the photosensitizer is a temperature sensing material; carrying out a solvent removal process on the negative photoresist layer; exposing and curing the negative photoresist layer, and forming a standing wave defect on the side edge of the photoresist layer on the side wall of the notch groove; baking the exposed and cured negative photoresist layer, diffusing the photosensitizer in the photoresist layer, and filling the standing wave defect; and developing the solar cell film, and removing the negative photoresist layer which i