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