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Optically induced charge storage and current generation in InAs quantum dots

Pettersson, H ; Bååth, L ; Carlsson, N ; Seifert, Werner LU and Samuelson, Lars LU (2002) In Physical Review B (Condensed Matter and Materials Physics) 65(7).
Abstract
We report on optically induced charge storage effects and cur-rent generation in self-assembled InAs quantum dots embedded in an InP matrix. Illumination with photons of energy higher than about 0.86 eV efficiently loads the dots with a maximum of about 1 hole/dot. The spectral response at lower photon energy is strongly enhanced at elevated temperatures. We present a detailed balance model for the dots and discuss the thermally assisted optical excitation processes pertinent to hole accumulation. We also show that these processes make the dots act as nanometer-scaled temperature-dependent current generators.
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author
; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review B (Condensed Matter and Materials Physics)
volume
65
issue
7
article number
073304
publisher
American Physical Society
external identifiers
  • wos:000174030900011
  • scopus:17444452789
ISSN
1098-0121
DOI
10.1103/PhysRevB.65.073304
language
English
LU publication?
yes
id
80ed4aba-699c-442f-8f68-a3321ec78810 (old id 342740)
date added to LUP
2016-04-01 16:49:28
date last changed
2025-10-14 11:31:14
@article{80ed4aba-699c-442f-8f68-a3321ec78810,
  abstract     = {{We report on optically induced charge storage effects and cur-rent generation in self-assembled InAs quantum dots embedded in an InP matrix. Illumination with photons of energy higher than about 0.86 eV efficiently loads the dots with a maximum of about 1 hole/dot. The spectral response at lower photon energy is strongly enhanced at elevated temperatures. We present a detailed balance model for the dots and discuss the thermally assisted optical excitation processes pertinent to hole accumulation. We also show that these processes make the dots act as nanometer-scaled temperature-dependent current generators.}},
  author       = {{Pettersson, H and Bååth, L and Carlsson, N and Seifert, Werner and Samuelson, Lars}},
  issn         = {{1098-0121}},
  language     = {{eng}},
  number       = {{7}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review B (Condensed Matter and Materials Physics)}},
  title        = {{Optically induced charge storage and current generation in InAs quantum dots}},
  url          = {{http://dx.doi.org/10.1103/PhysRevB.65.073304}},
  doi          = {{10.1103/PhysRevB.65.073304}},
  volume       = {{65}},
  year         = {{2002}},
}