Deposition and Characterization of Innovative Bulk Heterojunction Films Based on CuBi2O4 Nanoparticles and Poly(3,4 ethylene dioxythiophene):Poly(4-styrene sulfonate) Matrix

This work presents the deposition and study of semiconductor behavior CuBi2O4 nanoparticles (NPs) with an average crystallite size 24 ± 2 nm embedded in poly(3,4 ethylene dioxythiophene):poly(4-styrene sulfonate) (PEDOT:PSS) films. The NP bandgap was estimated at 1.7 eV, while for composite film, it 2.1 due to PEDOT:PSS heterojunction between polymer NPs. charge transport glass/ITO/PEDOT:PSS-CuBi2O4 NP/Ag system studied under light dark conditions by means current–voltage (I–V) characteristic curves. In natural-light conditions, NPs presented electric characterized three different mechanisms: low voltages, follows Ohm’s law; when voltage increases, occurs diffusion NP–polymer interfaces; higher current being dominated saturation region. Due their crystalline structure, films feasibility integrating them as components PEDOT:PSS, can be used parts optoelectronic devices.