Bound Exciton–Neutral Acceptor Complex in ZnTe

Abstract
The splitting of I1 (2.3758 eV) and I2 (2.3590 eV) lines observed in luminescence at liquid helium temperature due to uniaxial stress is investigated. The I1 line splits into three components, all of them allowed for both polarizations. The I2 line splits into two components, one allowed for ℰ⟂p and the second allowed for both polarizations. The I1 and I2 lines are interpreted as due to radiative annihilation of excitons bound to neutral acceptor and donor, respectively.