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.
All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)
Mittiga, A., Salza, E., Sarto, F., Tucci, M., & Vasanthi, R. (2006). Heterojunction solar cell with 2% efficiency based on a Cu. Applied Physics Letters, 88(16), -. . https://doi.org/10.1063/1.2194315