Heterostructure Silicon Solar Cells with Enhanced Power Conversion Efficiency Based on Si-x/Ni(3+)Self-Doped NiOx Passivating Contac
-
作者
Zhang, Wei; Shen, Honglie; Yin, Min; Lu, Linfeng; Xu, Binbin; Li, Dongdong
-
刊物名称
ACS OMEGA
-
年、卷、文献号
2022, 7, 2470-1343
-
关键词
Zhang, Wei; Shen, Honglie; Yin, Min; Lu, Linfeng; Xu, Binbin; Li, Dongdong
-
摘要
Developing efficient crystalline silicon/wide-band gap metal-oxide thin-film heterostructure junction-based crystalline silicon (c-Si) solar cells has been anattractive alternative to the silicon thinfilm-based counterparts. Herein, nickel oxide thinfilms are introduced as the hole-selective layer forc-Si solar cells and prepared using thereactive sputtering technique with the target of metallic nickel. An optimal Ni3+self-doped NiOxfilm is obtained by tuning the reactive oxygen atmosphere to construct theoptimizedc-Si/NiOxheterostructure band alignment. A thin SiOxinterlayer was furtherintroduced to reduce the defect of thec-Si/NiOxinterface with the UV-ozone (UVO)treatment. The constructedp-typec-Si/SiOx/NiOx/Ag solar cell exhibits an increase inthe open voltage from 586 to 611 mV and achieves a 19.2% conversion efficiency.
