Heterojunction solar cell with 2% efficiency based on a Cu

Alberto Mittiga, Enrico Salza, Francesca Sarto, Mario Tucci, Rajaraman Vasanthi

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We report on the fabrication of heterojunction solar cells made by deposition of transparent conducting oxide (TCO) films on Cu2 O substrates. The TCO films have been grown by ion beam sputtering on good quality Cu2 O sheets prepared by oxidizing copper at a high temperature. The best solar cell has reached an open-circuit voltage of 0.595 V, a short-circuit current density of 6.78 mA cm2, a fill factor of 50%, and a conversion efficiency of 2% under simulated AM1.5G illumination, which is the highest efficiency value reported for this kind of heterojunction devices. These devices represent a good starting point for the development of very low cost solar cells. © 2006 American Institute of Physics.
Original languageEnglish
Article number163502
Pages (from-to)-
JournalApplied Physics Letters
Issue number16
Publication statusPublished - 17 Apr 2006


All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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