Abstract
Nanocrystalline Si:Er (nc-Si:Er) films were sputtered on p-Si (100) substrates and diffused with phosphorus to form PN heterojunction diodes. The I-V properties of these diodes were characterized. And the properties of diodes without Er were compared with n-nc-Si:Er/p-Si. It was found that n-nc-Si:Er/p-Si diodes had better characteristics. Solar cells based on n-nc-Si:Er/i-nc-Si/p-Si were fabricated and characterized. The photoelectrical conversion efficiency of 18.13% for n-nc-Si:Er/i-nc-Si/p-Si solar cell was achieved.
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