Back point contact cell with bubbling-free aluminum oxide and preparation method thereof

The invention discloses a back point contact cell with bubbling-free aluminum oxide. The back point contact cell comprises an aluminum oxide layer and a protective film. A buffer layer is arranged between the aluminum oxide layer and the protective film. By the aid of arrangement of the buffer layer...

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Bibliographische Detailangaben
Hauptverfasser:	SONG WENTAO, LI RUIXU, ZHANG BIN, XIA ZHENGYUE, GAO YANTAO, TAO LONGZHONG, DONG JINGBING, GONG CHANGMENG, YANG ZAISAN, LI XIAOQIANG, REN CHANGRUI, XU XIAOMING, XING GUOQIANG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION SEMICONDUCTOR DEVICES TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE
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Beschreibung
Zusammenfassung:	The invention discloses a back point contact cell with bubbling-free aluminum oxide. The back point contact cell comprises an aluminum oxide layer and a protective film. A buffer layer is arranged between the aluminum oxide layer and the protective film. By the aid of arrangement of the buffer layer, stress of aluminum oxide during sintering is relieved, the bubbling problem of the aluminum oxide is solved, attenuation of solar cell performance is limited. The invention further discloses a preparation method of the cell, the bubbling problem of the aluminum oxide can be solved by only growing a silicon oxide buffer film on the surface of an aluminum oxide passivating film, and the preparation method is high in operability.