The outlook for the development of radiation sources in the middle-IR range based on the intraband transitions between the energy levels of charge carriers in injection laser heterostructures with quantum dots and wells

1999 ◽  
Vol 169 (4) ◽  
pp. 459 ◽  
Author(s):  
L.E. Vorob'ev ◽  
D.A. Firsov ◽  
V.A. Shalygin ◽  
V.N. Tulupenko ◽  
N.N. Ledentsov ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Energy Levels ◽  
Injection Laser ◽  
Charge Carriers ◽  
Laser Heterostructures ◽  
Radiation Sources

scholarly journals Разработка и исследование фотовольтаических структур на основе слоев квантовых точек PbS с различными лигандами

2018 ◽  
Vol 44 (22) ◽  
pp. 25
Author(s):  
М.А. Звайгзне ◽  
А.Е. Александров ◽  
Я.В. Гольтяпин ◽  
Д.А. Лыпенко ◽  
А.Р. Тамеев ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Energy Levels ◽  
Charge Carriers ◽  
Organic Ligands ◽  
Hopping Transport ◽  
Chemical Structures ◽  
Carrier Transfer ◽  
Ligand Structure ◽  
The Difference ◽  
Lead Sulfide Quantum Dots

AbstractThe photoconductivity of condensates of lead-sulfide quantum dots (QDs)—QD solids—with various organic ligands is studied. It is demonstrated that the QD solid photoconductivity increases exponentially with a reduction in length of ligand molecules and does not depend on their chemical structures, since it is governed by hopping transport of charge carriers. In contrast, the photocurrent in photovoltaic ITO/PEDOT: PSS/PbS/ZnO/Al elements depends on the ligand structure, since this structure sets the positions of QD energy levels and thus affects the efficiency of charge carrier transfer to electrodes. The difference between mechanisms of generation of photoconductivity and photovoltaic currents is discussed.

Magneto-photoluminescence study of energy levels of self-organised InAs/GaAs quantum dots

2000 ◽  
Vol 69-70 ◽  
pp. 318-323 ◽  
Author(s):  
J Oswald ◽  
K Kuldová ◽  
J Zeman ◽  
E Hulicius ◽  
S Jullian ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Energy Levels ◽  
Photoluminescence Study

Shell-Tunneling Spectroscopy of the Single-Particle Energy Levels of Insulating Quantum Dots

Nano Letters ◽  
2001 ◽  
Vol 1 (10) ◽  
pp. 551-556 ◽  
Author(s):  
E. P. A. M. Bakkers ◽  
Z. Hens ◽  
A. Zunger ◽  
A. Franceschetti ◽  
L. P. Kouwenhoven ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Single Particle ◽  
Energy Levels ◽  
Tunneling Spectroscopy ◽  
Particle Energy ◽  
Single Particle Energy

Nonequilibrium population of charge carriers in structures with InGaN deep quantum dots

2007 ◽  
Vol 41 (5) ◽  
pp. 575-589 ◽  
Author(s):  
D. S. Sizov ◽  
E. E. Zavarin ◽  
N. N. Ledentsov ◽  
V. V. Lundin ◽  
Yu. G. Musikhin ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Charge Carriers

Tailoring of Energy Levels in Strain-Induced Quantum Dots

1999 ◽  
Vol 38 (Part 1, No. 2B) ◽  
pp. 1081-1084 ◽  
Author(s):  
Jouni Ahopelto ◽  
Markku Sopanen ◽  
Harri Lipsanen
Keyword(s):  
Quantum Dots ◽  
Energy Levels

scholarly journals Radiation Sterilization: Dose Is Dose

2020 ◽  
Vol 54 (s1) ◽  
pp. 45-52
Author(s):  
Joyce M. Hansen ◽  
Niki Fidopiastis ◽  
Trabue Bryans ◽  
Michelle Luebke ◽  
Terri Rymer
Keyword(s):  
Energy Level ◽  
Energy Levels ◽  
Radiation Energy ◽  
Biological Indicators ◽  
High Energy ◽  
Microbial Inactivation ◽  
Radiation Sterilization ◽  
Dose Rates ◽  
Radiation Sources ◽  
Radiation Sterilization Dose

Abstract In the radiation sterilization arena, the question often arises as to whether radiation resistance of microorganisms might be affected by the energy level of the radiation source and the rate of the dose delivered (kGy/time). The basis for the question is if the microbial lethality is affected by the radiation energy level and/or the rate the dose is delivered, then the ability to transfer dose among different radiation sources could be challenged. This study addressed that question by performing a microbial inactivation study using two radiation sources (gamma and electron beam [E-beam]), two microbial challenges (natural product bioburden and biological indicators), and four dose rates delivered by three energy levels (1.17 MeV [gamma], 1.33 MeV [gamma], and 10 MeV [high-energy E-beam]). Based on analysis of the data, no significant differences were seen in the rate of microbial lethality across the range of radiation energies evaluated. In summary, as long as proof exists that the specified dose is delivered, dose is dose.

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