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