“…Electronic (e.g., diodes, transistors, and integrated circuits) and optoelectronic devices (e.g., solar cells, lightemitting diodes, and lasers) all rely on the unique, diverse, and tunable properties of semiconductors. [1][2][3][4][5][6][7][8][9][10] Understanding the properties of semiconductors and the sophisticated microscopic processes and mechanisms that enable the excellent properties are thus at the core of modern semiconductors research. [2,[11][12][13][14][15][16][17] Among the basic properties of semiconductors, their electronic and phononic band structures are of key interest, since various functional properties such as optical absorption and emission, charge and heat transport coefficients, carrier recombination, and thermodynamic free energies can be derived from the basic band structures.…”