A multi-junction photovoltaic device and an integrated multi-junction photovoltaic device, having a two-terminal structure, in which subsequent layers can be stacked under conditions with minimal restrictions imposed by previously stacked layers. Also, processes for producing these photovoltaic devices. A plurality of photovoltaic cells having different spectral sensitivity levels are stacked such that at least the photovoltaic cells (2, 4) at the light-incident end and the opposite end have a conductive thin-film layer (5a, 5b, 5c, 5d) as the outermost layer that undergoes connection, the remaining photovoltaic cell (3) has conductive thin-film layers (16a, 16b) as the outermost layers that undergo connection, and the outermost layers are bonded via anisotropic conductive adhesive layers (6a, 6b) containing conductive microparticles within a transparent insulating material. The conductive microparticles in the anisotropic conductive adhesive layers (6a, 6b) electrically connect the layers in the stacking direction, and the conductive thin film layers (5a, 5b, 5c, 5d) electrically connect the photovoltaic layers (2, 3, 4) that function as bonding materials in the lateral direction (in-plane direction).
展开▼
