Journal
2021 IEEE 48TH PHOTOVOLTAIC SPECIALISTS CONFERENCE (PVSC)
Volume -, Issue -, Pages 908-911Publisher
IEEE
DOI: 10.1109/PVSC43889.2021.9519096
Keywords
poly-crystalline silicon; silicon oxide; silicon nanocrystals; passivation; carrier transport; solar cell
Funding
- JSPS KAKENHI [18H05951, 20K15127]
- New Energy and Industrial Technology Development Organization (NEDO) in Japan
- Grants-in-Aid for Scientific Research [20K15127, 18H05951] Funding Source: KAKEN
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By utilizing NAnocrystalline Transport path in Ultrathin dielectrics for Reinforced passivating contact (NATURE contact) in crystalline silicon solar cells, it is possible to simultaneously achieve passivation and carrier extraction. The thin contact layer of 8 nm thickness demonstrates good passivation performance and can be implemented on both sides of the solar cells, opening up possibilities for various functional devices.
We apply NAnocrystalline Transport path in Ultrathin dielectrics for Reinforced passivating contact (NATURE contact) to crystalline silicon solar cells for simultaneous achievement of passivation and carrier extraction. The Si nanocrystals are formed in silicon oxide by deposition of hydrogenated amorphous silicon oxide with different oxygen concentration and subsequent annealing. NATURE contact with total layer thickness of 8 nm exhibits reasonably good passivation performance. Furthermore, we demonstrate that NATURE contact can be successfully implemented to the both sides of crystalline silicon solar cells. NATURE contact, which permits flexible structural and chemical design of a passivation contact layer, will open a possibility for various functional devices.
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