Optimization of organic bi-layer solar cell through systematic study of anode treatment and material thickness

Abstract

The performance of bi-layer organic solar cells with the structure ITO/PEDOT:PSS/CuPc/C 60 /BCP/Al was optimized. Prior to cell deposition, an optimal indium tin oxide (ITO) surface treatment technique was determined, with N 2 plasma treatment providing the highest solar cell efficiency. Parametric studies were performed to identify optimal fabrication conditions and deposition thicknesses for each layer by using solar cell efficiency as the primary performance measure.

Controlling the morphology of trioctyl phosphine oxide-coated cadmium selenide/poly 3-hexyl thiophene composite active layer for bulk hetero-junction solar cells

“…The P 3 HT was insoluble in highly polar solvents and non-polar solvents, but soluble in the solvents of intermediate polarity such as chloroform and chlorobenzene [17]. The co-solubility characteristics of P 3 HT and TOPO-capped CdSe mixture were tested for various solvents and compared in terms of surface roughness of the resulting thin film and nanoparticles' dispersion.…”

Enhancement of CdSe/Poly(3-hexylthiophene) Bulk Heterojunction Solar Cell Efficiency by Surface Ligand Exchange and Thermal Treatment

“…They were then treated in a nitrogen plasma chamber at 50 W for 10 min to improve their surface properties. 22) To characterize the optical properties of photoactive layer with respect to thermal treatment, the CdSe nanoparticles (with different surface ligands) and P3HT polymer blends were first prepared in a binary solvent of chlorobenzene/pyridine (90/10 v/v). The $150 AE 5 nm-thick photoactive CdSe/P3HT layers were deposited by dropping the blends and spin-coating them onto the substrates at 4000 rpm for 30 s. The films were then thermally treated for 10 min on a hot plate in a nitrogen glove box at temperatures between room temperature and 220 C. The film's optical absorbance was measured by UVvis spectroscopy.…”