Electronic structures of interfacial states formed at polymeric semiconductor heterojunctions
Understanding how excited states behave at heterojunctions between polymers in blends is fundamental to designing better organic solar cells and light-emitting diodes. A quantum-mechanical molecular-scale model of how excitations behave at heterojunctions has been developed, showing an unexpectedly wide but specific range of excitonic states.
Barack Obama said his plan to end the Iraq war was unchanged and he was puzzled by the sharp reaction to his statement that he might "refine" his timetable for withdrawing U.S. combat troops.
AFP - The United States military wanted to test deadly nerve gases on Australian troops in a remote area of far north Queensland in the 1960s but Canberra refused, a report said Sunday.
