Factors limiting the open-circuit voltage in microcrystalline silicon solar cellsM. Nath, S. Chakraborty, E.V. Johnson, A. Abramov, P. Roca i Cabarrocas and P. ChatterjeeEPJ Photovolt., 2 (2011) 20101DOI: https://doi.org/10.1051/epjpv/2011025