We report a study of the internal quantum efficiency (IQE) of CdSe quantum-dot (QD)-sensitized solar cells prepared by direct adsorption of pre-synthesized QDs, passivated with either tri-n-octylphosphine oxide (TOPO) or n-butylamine (BA), onto a nanocrystalline TiO(2) film.

phosphoryl containing ligand tri-n-octylphosphine oxide (topo) in dichloromethane has been used as an extracting agent for tetravalent thorium and trivalent europium ions from their 1 m sodium nitrates. the equilibrium data reveal that both ions are extracted as the complexes at 1:3 metal/ligand ratio. the values of conditional extraction equilibrium constant (kex) show the superior extractive ...

A novel cyclohexane/water/ionic-liquid (1-butyl-3-methylimidazolium hexafluorophosphate, [bmim][PF6]) triphasic extraction system was studied for a possible fractional extraction of divalent metal cations with co-using 8-quinolinol (HQ) and tri-n-octylphosphine oxide (TOPO) as competitive extractants. In this system, Ni2+ was extracted into the [bmim][PF6] phase as a Q(-)-complex, whereas each ...

In this work, we have demonstrated the structural and optoelectronic properties of the surface of ternary/quaternary (CISe/CIGSe/CZTSe) chalcopyrite nanocrystallites passivated by tri-n-octylphosphine-oxide (TOPO) and tri-n-octylphosphine (TOP) and compared their charge transfer characteristics in the respective polymer: chalcopyrite nanocomposites by dispersing them in poly(3-hexylthiophene) p...

The extraction behavior of rare-earth ions with an 8-hydroxyquinoline derivative, HO8Q (5-octyloxymethyl-8-quinolinol), was studied using an ionic liquid, [C8mim][Tf2N] (1-octyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide), as the extracting phase. Compared with a conventional organic solvent, n-dodecane, the ionic liquid system showed a higher extraction ability for a heavy rare eart...