An improved nanophosphor scintillator liquid comprises nanophosphor
particles in a liquid matrix. The nanophosphor particles are optionally
surface modified with an organic ligand. The surface modified
nanophosphor particle is essentially surface charge neutral, thereby
preventing agglomeration of the nanophosphor particles during dispersion
in a liquid scintillator matrix. The improved nanophosphor scintillator
liquid may be used in any conventional liquid scintillator application,
including in a radiation detector.