CONFINED BIEXCITONS IN CUBR QUANTUM DOTS

The steady-state and time-resolved luminescence of CuBr quantum dots o f different growth processes and in the wide range of sizes between R/ a(B) almost-equal-to 1 to 6 has been analysed. A radiative transition energetically lower than the exciton luminescence has been observed an d attributed to the confined biexciton state. The increasing biexciton binding energy with increasing confinement has been confirmed, in agr eement with theory and experimental results reported for CuCl.