Bernède ITO free electrode Ambipolar material A Organic solar cell 34-propylenedioxypiyrrole Aluminum-doped zinc oxide Addou Photoemission spectroscopy Aqueous colloidal solution Lamkaouane Analogue A Interfaces Alternative module structure Ambipolarity Synthesis ADDITIVE E171 4-propylenedioxythiophene X-ray diffraction ABSORPTION Atomic force microscopy Buffer layers Epitaxy Electrical properties L Copper indium gallium selenide Silicon Aniline and thiophene derivatives Organic photovoltaic cells Partial shading Absorption spectroscopy Back contact Alkali XPS B Vapour deposition Photoluminescence Adsorption ATR-FTIR Cattin Tandem solar cells A Fullerenes ALPHA-AMYLASE Electronic structure ADSORPTION PVD Anode Arzel N-doping Molybdenum trioxide Molybdenum oxide Ftouhi 2D nanomaterials Planar heterojunctions Nanoparticles Thin-film solar cells Actinide conditioning Buffer layer 31P NMR Absorption Titanium dioxide A Thin films Amorphous silica H TIO2 Thin films Fill factor Anode buffer layer Surface morphology GaSe2 Characterization 4-ethylenedioxythiophene Sodium Solar cells Alpha-sexithiophene Aluminum phthalocyanine chloride CIGSe Active layers BaTiO3 BTO Alkali fluoride postdeposition treatments Interfaces Raman Ambipolar organic layer Thin film Organic solar cells CuIn Solar cell Anatase colloidal solution for printing Electropolymerization Alternative buffers Planar heterojunction J-C 4-ethylenedioxypyrrole M Anatase Aminofluorene thiophene derivatives CIGS Photovoltaics Reverse bias E171