Features of the energy spectrum of indium antimonide quantum dots

Abstract

Energy spectrum of indium antimonide (InSb) quantum dots (QD) was analyzed in this paper. Properties of energy spectrum levels were determined both by calculations and experiments using differential tunneling current-voltage characteristics (CVC) rated to static conductivity. It was confirmed that relatively large QD (size of about 20-25 nm) exhibit quantum size effects. Critical values of the characteristic parameters of InSb QD are analyzed, in which application of the differential tunneling current-voltage characteristics method for express analysis of the characteristic sizes of QD leads to significant errors (more than 10 %).

Analysis of the energy spectrum of indium antimonide quantum dots with temperature changes

“…The obtained samples were studied by scanning tunneling microscopy (STM) using a SOLVER Nano scanning probe microscope, as well as using a Zetasizer Nano ZS laser particle size analyzer. The research technique using the analysis of normalized differential tunneling CVCs is described in [11]. Additionally, in this work, measurements were carried out at sample temperatures of 23 • C and 95 • C.…”

Исследование Электрофизических Свойств Квантовых Точек Антимонида Индия: Значение Формы

“…5, где приведено соответствие 1-го и 2-го пиков на нормированной дифференциальной туннельной ВАХ рассчитанным зависимостям энергий первого и второго уровней электронов в КТ для кубической модели. Данные пики характерны для туннелирования электронов через уровни КТ в металлический зонд туннельного микроскопа [10][11][12]. Характерный размер КТ, определенный таким образом, составляет 8−10 нм.…”

Effect of co-sensitization of InSb quantum dots on enhancing the photoconversion efficiency of CdS based quantum dot sensitized solar cells

“…Over which InSb QDs were made to load by direct absorption, followed by drying with N 2 gas pursing for 5 minutes. [43][44][45][46][47][48][49] 2.3.3 Counter electrode. Initially FTO glass slides were well cleaned and were immersed in isopropanol and sonicated for 30 min and washed with double distilled water and ethanol.…”