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|1. (WO2017185774) FLIP FOUR-JUNCTION SOLAR CELL STRUCTURE AND PREPARATION METHOD THEREFOR|
|Applicants:||TIANJIN SANAN OPTOELECTRONICS CO., LTD.
|Title:||FLIP FOUR-JUNCTION SOLAR CELL STRUCTURE AND PREPARATION METHOD THEREFOR|
Disclosed are a flip four-junction solar cell structure and a preparation method therefor. Firstly, a GaInP sub-cell and a GaAs sub-cell are formed on a GaAs substrate in sequence by means of MOCVD or an MBE, and then a SiGeSn sub-cell and a SiGe sub-cell are grown by means of UHVCVD. This cell structure has good current matching and lattice matching, and can achieve a high crystalline quality and cell efficiency.