Energy level diagram of X- in high magnetic fields

The photoluminescence energy of the negatively charged excitons (X-) in a 100 Å GaAs/AlGaAs quantum well (QW) using magnetic fields upto 50 T was analysed. The QW structures were grown by molecular beam epitaxy. It was found that all possible transitions of the singlet and triplet state of the X- can be determined and the energy level diagram of X- can be constructed