An electrochemical device, especially an electrically controllable system
with variable energy and/or optical properties or a photovoltaic device,
including at least one substrate carrying an electroactive stack of
layers arranged between a lower electrode and an upper electrode. Each
electrode includes at least one electroconductive layer in electrical
contact with at least one current lead. The current leads are arranged
outside the region of the carrier substrate that is covered by the stack
of electroactive layers.