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Conductivity of quantum dot arrays

 
Ioffe Institute, ul. Polytekhnicheskaya 26, St. Petersburg, 194021, Russian Federation

Arrays of quantum dots (QDs), i.e., semiconducting nanoparticles with typical sizes of 3&madsh;10 nm, have become more than merely an object of scientific research; they are now used in electronic devices. They are appealing mainly due to their optical properties, which depend on the QD size. Here, we consider the electronic properties of such arrays. These properties typically inherit the properties of bulk semiconductors, but in some cases can be substantially different due to the discreteness of sizes and a particular type of disorder in the array: the difference in size and spacing among QDs, as well as the number of donors. Notably, in such arrays, the metal—dielectric transition occurs at a much higher concentration of donors than in the bulk material. The nature of hopping conductivity in the dielectric phase strongly depends on the disorder type, quantum confinement effects, the Coulomb blockade, and the overlap integral of QDs.

Fulltext is available at IOP
Keywords: quantum dot, nanoparticle, quantum confinement, electron transport, metal—insulator transition, Coulomb interaction, Coulomb blockade
PACS: 71.30.+h, 72.10.−d, 72.15.Rn, 72.20.Ee, 72.80.Ng, 73.21.La, 73.22.−f, 73.23.Hk, 73.40.Gk, 81.07.Bc (all)
DOI: 10.3367/UFNe.2019.08.038649
URL: https://ufn.ru/en/articles/2020/10/c/
Citation: Reich K V "Conductivity of quantum dot arrays" Phys. Usp. 63 994–1014 (2020)
BibTexBibNote ® (generic)BibNote ® (RIS)Medline RefWorks
RT Journal
T1 Conductivity of quantum dot arrays
A1 Reich,K.V.
PB Physics-Uspekhi
PY 2020
FD 10 Oct, 2020
JF Physics-Uspekhi
JO Phys. Usp.
VO 63
IS 10
SP 994-1014
DO 10.3367/UFNe.2019.08.038649
LK https://ufn.ru/en/articles/2020/10/c/

Received: 4th, July 2019, revised: 25th, August 2019, 28th, August 2019

Оригинал: Рейх К В «Электропроводность массива квантовых точек» УФН 190 1062–1084 (2020); DOI: 10.3367/UFNr.2019.08.038649

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