Influence of Schottky contact on the C-V and J-V characteristics of HTM-free perovskite solar cells Y. Huang, S. Aharon, A. Rolland, L. Pedesseau, O. Durand, L. Etgar and J. Even EPJ Photovolt., 8 (2017) 85501 Published online: 24 March 2017 DOI: 10.1051/epjpv/2017001