Enhanced carrier collection in p-Ni1 - XO:Li/n-Si heterojunction solar cells using LiF/Al electrodes

Feng Hao Hsu, Na Fu Wang, Yu Zen Tsai, Chung Yi Wu, Yu Song Cheng, Ming Hao Chien, Mau Phon Houng

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


This study confirms that a LiF/Al (LiF thickness = 15 Å) stack is an efficient Ohmic contact method for use in p-Ni1 - xO:Li/n-Si heterojunction solar cell applications. The maximal conversion efficiency obtained was 6.31%, which was 2.1% greater compared with that of Al-only electrode cell. Temperature-dependent current-voltage measurements confirmed that the carrier transport mechanism was dipole-assisted tunneling at the interface. The insertion of LiF acted as an effective Ohmic contact method and also assisted the back surface passivation.

Original languageEnglish
Pages (from-to)159-163
Number of pages5
JournalThin Solid Films
Publication statusPublished - 2014 Dec 31

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

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