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SOLAR CELL, MULTI-JUNCTION TYPE SOLAR CELL, SOLAR CELL MODULE, PHOTOVOLTAIC POWER GENERATION SYSTEM AND MANUFACTURING METHOD FOR SOLAR CELL
SOLAR CELL, MULTI-JUNCTION TYPE SOLAR CELL, SOLAR CELL MODULE, PHOTOVOLTAIC POWER GENERATION SYSTEM AND MANUFACTURING METHOD FOR SOLAR CELL
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机译：太阳能电池，多结型太阳能电池，太阳能电池模块，光伏发电系统及太阳能电池的制造方法
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摘要
To provide a solar cell, multi-junction type solar cell, solar cell module, photovoltaic power generation system and manufacturing method for solar cell, capable of improving conversion efficiency in a wide gap system.SOLUTION: A solar cell 100 includes a first electrode 2, a light absorption layer 3 containing at least Cu, In, Ga and Se, an n-type layer 4, and a second electrode 5. The light absorption layer 3 exists between the first electrode 2 and the n-type layer 4 and the n-type layer 4 exists between the light absorption layer 3 and the second electrode 5. In the light absorption layer 3, a percentage of elements of Cu, Ga and Se is at least 80 atom%. A total Ga concentration of the light absorption 3 is higher than a total In concentration of the light absorption layer 3, and an In concentration in a region on n-type layer 4 side of the light absorption layer 3 is higher than a Ga concentration in a region on n-type layer 4 side of the light absorption layer 3.SELECTED DRAWING: Figure 2
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