CuS nanoplates from ionic liquid precursors—Application in organic photovoltaic cells

Abstract

Hexagonal p-type semiconductor CuS nanoplates were synthesized via a hot injection method from bis(trimethylsilyl)sulfide and the ionic liquid precursor bis(N-dodecylpyridinium) tetrachloridocuprate(ii). The particles have a broad size distribution with diameters between 30 and 680 nm and well-developed crystal habits. The nanoplates were successfully incorporated into organic photovoltaic (OPV) cells as hole conduction materials. The power conversion efficiency of OPV cells fabricated with the nanoplates is 16% higher than that of a control device fabricated without the nanoplates.

Robust Inorganic Hole Transport Materials for Organic and Perovskite Solar Cells: Insights into Materials Electronic Properties and Device Performance

“…Copper sulfide (CuS) was initially reported to function as an effective HTL in P3HT:PCBM‐based OSCs with a PCE of 2.64%. [ 314 ] Liquid‐exfoliated tungsten sulfide (WS 2 ) was proposed to function as an effective HTL in nonfullerene‐based OSCs. High uniformity on ITO, large, tunable, W F (≈5.2–5.9 eV, depending on the number of deposited layers), favorable photonic structure, and reduced recombination losses resulted in a superior PCE of 16.50% for PBDB‐T‐2F:Y6:PC 71 BM‐based OSCs with an exceptional J SC of 26 mA cm −2 , thus representing the highest PCE to date for OSCs with 2D charge transport layers.…”

The crystal structure ofN-butylpyridinium bis(μ2-dichlorido)-tetrachloridodicopper(II), C18H28N2Cu2Cl6

“…Besides their intrinsic properties and application, MILs have also been used as ionic liquid precursors (ILPs) for inorganic nanomaterials, where the ILP acts as the solvent, the template, and the precursor for the inorganic material at the same time [19,30,31]. For example, ILPs have been used to synthesize CuCl, Au, Ag, metal oxide, Fe 3 C, and CuS nanomaterials [8,30,[32][33][34][35][36][37].…”

Facile Synthesis of Hierarchical CuS and CuCo2S4 Structures from an Ionic Liquid Precursor for Electrocatalysis Applications

“…Among others, ionic liquids (ILs) and ionic liquid precursors (ILPs) may provide such suitable synthetic approaches. [9][10][11][12] ILs are organic compounds that consist of completely from ions, with relatively low melting point. Their properties can be tuned by an appropriate choice of the cation and the anion.…”