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