The matrix elements of the topology matrix Htopology are given by:2where Zi represents the nuclear charge of the i-th atom, and hii and hjj are the diagonal matrix elements corresponding to the i-th and j-th atoms, respectively. The generation of the molecular graph in the form of H...
Subsequently, p-type-doped GaN with Mg is coated on the outside of the MQW to form a capping film. The structure and preparation process are shown in Figure 19a. The emission wavelength of the core/shell GaN nanowire LED is controlled by an external voltage, just like a multi-active QW...