Microfiber Optic Arrays as Top Coatings for Front-Contact Solar Cells toward Mitigation of Shading Loss

Fu Hao Chen, Saeid Biria, Hansheng Li, Ian D. Hosein

Research output: Contribution to journalArticlepeer-review

Abstract

Microfiber optic array structures are fabricated and employed as an optical structure overlaying a front-contact silicon solar cell. The arrays are synthesized through light-induced self-writing in a photo-crosslinking acrylate resin, which produces periodically spaced, high-aspect-ratio, and vertically aligned tapered microfibers deposited on a transparent substrate. The structure is then positioned over and sealed onto the solar cell surface. Their fiber optic properties enable collection of non-normal incident light, allowing the structure to mitigate shading loss through the redirection of incident light away from contacts and toward the solar cell. Angle-averaged external quantum efficiency increases nominally by 1.61%, resulting in increases in short-circuit current density up to 1.13 mA/cm2. This work demonstrates a new approach to enhance light collection and conversion using a scalable, straightforward, light-based additive manufacturing process.

Original languageEnglish (US)
Pages (from-to)47422-47427
Number of pages6
JournalACS Applied Materials and Interfaces
Volume11
Issue number50
DOIs
StatePublished - Dec 18 2019

Keywords

  • coatings
  • efficiency
  • fiber optic
  • micropillar
  • polymers
  • self-writing
  • solar cells

ASJC Scopus subject areas

  • Materials Science(all)

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