Плотность Поверхностных Состояний В Коллоидных Нанопластинах CdSe

An experimental observation of a new type of traps associated with surface states of colloidal CdSe nanoplatelets is reported. The traps have a cascade energy depletion mechanism via intrinsic excited states which cannot be detected by means of conventional thermally stimulated luminescence method. These cascade excited traps were characterized with the use of the original thermoluminescent technique. Energy diagram of nanoplatelets and related kinetic model were developed taking into account the trap excitation mechanism. According to the model density of surface states of the nanoplatelets was demonstrated to have two maxima at 100 and 280 meV. Физика и техника полупроводников, 2015, том 49, вып. 10