Efficient Heterojunction Solar Cells on p-type Crystal Silicon Wafers

Qi Wang, M. R. Page, E. Iwaniczko, Yueqin Xu, L. Roybal, R. Bauer, B. To, H. C. Yuan, A. Duda, F. Hasoon, Y. F. Yan, D. Levi, D. Meier, Howard M. Branz, T. H. Wang

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103 Scopus Citations


Efficient crystalline silicon heterojunction solar cells are fabricated on p -type wafers using amorphous silicon emitter and back contact layers. The independently confirmed AM1.5 conversion efficiencies are 19.3% on a float-zone wafer and 18.8% on a Czochralski wafer; conversion efficiencies show no significant light-induced degradation. The best open-circuit voltage is above 700 mV. Surface cleaning and passivation play important roles in heterojunction solar cell performance.

Original languageAmerican English
Article numberArticle No. 013507
Number of pages3
JournalApplied Physics Letters
Issue number1
StatePublished - 2010

NREL Publication Number

  • NREL/JA-520-47801


  • crystalline silicon
  • p-type wafers
  • solar cells


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