Journal
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
Volume 138, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.mssp.2021.106299
Keywords
Light trapping structure; Antireflection; ZnO; Nanoarray; Multi-crystalline silicon solar cell
Categories
Funding
- National Key R&D Program of China [2018YFB1500300, 2020YFB1506502]
- Open Project of Key Laboratory of Solar Energy Utilization & Energy Saving Technology of Zhejiang Province, China [ZJS-OP-2020-01]
- National Science Foundation of China [61721005]
- Key Project of Zhejiang Province, China [2021C01170]
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In this study, an enhanced light trapping structure for multi-crystalline silicon solar cells was proposed. By constructing a ZnO nano-needle array on the surface of the cells, reflection in the visible-near infrared band was minimized, resulting in improved efficiency. The low-cost and simple preparation method of this structure makes it highly applicable.
The current diamond-wire-sawed multi-crystalline silicon wafer lacks an effective light trapping structure, which results in high reflectivity and hinders the improvement of efficiency. In this work, we proposed an enhanced light trapping structure outside the junction of multi-crystalline silicon solar cells, that is, constructing a ZnO nano-needle array on the surface of the textured multi-crystalline silicon to minimize the reflection in the visible-near infrared band to achieve light trapping effect. Solar cells with ZnO nano-needle structure exhibit excellent light trapping performance over a wide band (350-1100 nm). The low-cost and simple preparation method makes this enhanced light trapping structure has broad application prospects.
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