Versatile biomimetic haze films for efficiency enhancement of photovoltaic devices

Kan Li, Yaokang Zhang, Hongyu Zhen, Helin Wang, Shenghua Liu, Feng Yan, Zijian Zheng

Research output: Journal article publicationJournal articleAcademic researchpeer-review

56 Citations (Scopus)


A low-cost biomimetic haze film (BHF) is fabricated by one-step replica molding of the petal texture of yellow roses with polydimethylsiloxane (PDMS). The BHF possesses very high haze transmission (75%) and ultrahigh diffusion transmittance (97%), superior anti-reflection ability, remarkable enhancement of light absorption at small incidence angles, and superb resistance to strong acids. When attached on top of the glass side of photovoltaic cells, the BHF significantly elongates the photon pathway in the active layer and enhances the light harvesting of the solar devices. As a result, the power conversion efficiency of Si solar cells, organic solar cells (OSCs) and perovskite solar cells (PSCs) is respectively improved remarkably by 6.8%, 10% and 15%. In addition, >65% of the photocurrent is maintained even at an extremely small light incidence angle (10°), which equals more than 2.7 times the efficiency enhancement of the solar cell without the BHF.
Original languageEnglish
Pages (from-to)969-974
Number of pages6
JournalJournal of Materials Chemistry A
Issue number3
Publication statusPublished - 1 Jan 2017

ASJC Scopus subject areas

  • General Chemistry
  • Renewable Energy, Sustainability and the Environment
  • General Materials Science


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