Radiative and non-radiative exciton recombination rate constants in ZnSe clusters Ning Du, Shengping Yu, Yujuan Xie, Yingqi Cui, Li Zhang and Mingli Yang Eur. Phys. J. B, 92 12 (2019) 280 Published online: 25 December 2019 DOI: 10.1140/epjb/e2019-100406-y