A discovery by two scientists at the Energy Department’s National Renewable Energy Laboratory (NREL) could aid the development of next-generation semiconductor devices.   The researchers, Kwangwook Park and Kirstin Alberi, experimented with integrating two dissimilar semiconductors into a heterostructure by using light to modify the interface between them. Typically, the semiconductor materials used in electronic devices are chosen based on such factors as having a similar crystal structure, l...