The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 31, 2026
Filed:
Feb. 02, 2021
Chint New Energy Technology Co., Ltd., Jiaxing, CN;
Hongbo Li, Jiaxing, CN;
Sheng He, Jiaxing, CN;
Wei Shan, Jiaxing, CN;
Wei-Chih Hsu, Hsinchu, TW;
Xinlin Zeng, Jiaxing, CN;
Yingcai Zhao, Jiaxing, CN;
CHINT NEW ENERGY TECHNOLOGY CO., LTD., Jiaxing, CN;
Abstract
Some embodiments of the present disclosure provide a back structure of a solar cell. The back structure includes an aluminum oxide film layer disposed on a silicon wafer substrate, and a first silicon nitride film layer and a first silicon oxynitride film layer, which are successively disposed on the aluminum oxide film layer from inside to outside; and the back structure further includes a second silicon nitride film layer disposed on the first silicon oxynitride film layer. The refractive index of the first silicon nitride film layer is greater than that of the second silicon nitride film layer, and the refractive index of the second silicon nitride film layer is greater than that of the first silicon oxynitride film layer.
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