Jun Takada

Development Of Flexible A-Sic/A-Si Heterojunction Solar Cells And Stable A-Sic/A-Si Tandem Cells With Blocking Barriers

The research and development of amorphous silicon solar cells at Kanegafuchi Chemical Industry Co. Ltd.(Kaneka) are introduced. In 1981, a wide gap a-SiC and a-SiC/a-Si hetero-junction solar cells were developed through joint research with Osaka University. Then flexible amorphous solar cell utilized the a-SiC/a-Si cell were developed and industrialized for the consumer market in 1983. To reduce the cost, a large capacity of deposition system were developed and built at Sakamoto plant in 1985. As to the instability of a-Si solar cell, a new and stable tandem cell has been developed which shows noble stability under both sun light and thermal conditions.