Open AccessРазмерное моделирование синтеза и проводимости коллоидных квантовых точек
Author(s) -
Н.Д. Жуков,
М.В. Гавриков,
С.Н. Штыков
Publication year - 2022
Publication title -
fizika i tehnika poluprovodnikov
Language(s) - English
Resource type - Journals
eISSN - 1726-7315
pISSN - 0015-3222
DOI - 10.21883/ftp.2022.06.52588.9809
Subject(s) - quantum dot , conductivity , quantum tunnelling , condensed matter physics , semiconductor , electron , current (fluid) , materials science , coulomb , limiting , optoelectronics , physics , quantum mechanics , mechanical engineering , engineering , thermodynamics
On the example of previously synthesized colloidalquantum dots (QD) of some semiconductors (CdSe, PbS, HgSe,InSb), the limiting sizes of nanocrystals with perfect structureduring their synthesis were determined depending on the ratioof their volume and surface energies, which can vary from 6 nmfor QD-InSb to 17 nm for QD-CdSe. The conductivity ofsingle quantum dots in the interelectrode nanogap is one-electron,and their current-voltage characteristic has regions of electrontunneling through potential barriers, Coulomb current limitation,and resonant peaks of quantum conductivity. Dimensional relationsare determined and nomograms of the relationship of dimensionalparameters are constructed to ensure the conditions for quantumconductivity. The assumption about terahertz current oscillationsis substantiated.