Zhang Yong, Dalpian G M, Fluegel B, Wei Su-Huai, Mascarenhas A, Huang X-Y, Li J, Wang L-W
National Renewable Energy Laboratory, 1617 Cole Boulevard, Golden, Colorado 80401, USA.
Phys Rev Lett. 2006 Jan 20;96(2):026405. doi: 10.1103/PhysRevLett.96.026405.
We discuss theoretically a novel approach to tailoring the properties of a new family of organic-inorganic hybrid superlattices, using two isostructural materials, ZnSe(en)0.5 and ZnTe(en)0.5, as examples. Replacing Se with Te leads to a number of nontrivial changes: the conduction band parity, singularity type, conductivity in the superlattice direction, and the p-type dopability. Experimentally, we report the first unambiguous observation of exciton-polariton emission in a hybrid semiconductor, i.e., ZnTe(en)0.5 . The band-edge excitonic transitions in both emission and absorption are explained by the calculated electronic structures.
我们从理论上讨论了一种定制新型有机-无机混合超晶格性质的新方法，以两种同构材料ZnSe(en)0.5和ZnTe(en)0.5为例。用Te取代Se会导致许多重要变化：导带奇偶性、奇点类型、超晶格方向的电导率以及p型掺杂能力。在实验上，我们首次明确观察到了混合半导体即ZnTe(en)0.5中的激子-极化激元发射。发射和吸收中的带边激子跃迁由计算得到的电子结构解释。
