Improved light trapping in polymer solar cells by light diffusion ink

Yu Chiang Chao, Yun Hsuan Lin, Ching Yi Lin, Husan De Li, Fu Min Zhan, Yu Zhang Huang

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


Light trapping is an important issue for solar cells to increase optical path length and optical absorption. In this work, a light trapping structure was realized for polymer solar cells by utilizing light diffusion ink which is conventionally used in display backlighting. The light scattering particles in the ink cause the deflection of light, and the number of these particles coated on a glass substrate determines the light transmission and scattering characteristics. It was observed that the short-circuit current density did not decrease with decreasing transmittance, but it increased to a highest value at an optimized transmittance. This behaviour is attributed to the trapping of scattered light in the photoactive layer.

Original languageEnglish
Article number105102
JournalJournal of Physics D: Applied Physics
Issue number10
Publication statusPublished - 2014 Mar 12
Externally publishedYes


  • Organic solar cells
  • diffusion
  • light trapping
  • photovoltaics

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Acoustics and Ultrasonics
  • Surfaces, Coatings and Films


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