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