  We consider a model of three electrons and one hole confined in a
two-dimensional (2D) plane, interacting with one another through Coulomb
forces. Using a Ritz variational method we find an upper bound of \approx
-0.0112me^4/8\pi^2 \epsilon ^2 \hbar ^2 for the ground-state energy of such a
system when the particles are near one another. The possible connections of
such a complex to other fields of physics are discussed.
