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