Analysis of the effect of polarization traps and shallow impurities on the interlevel light absorption of quantum dots

Low-dimensional all-inorganic perovskite quantum dots (QDs) have been increasingly developed as photo-sensing materials in the field of photodetectors because of their strong light-absorption capability and broad bandgap tunability. Here, solution-processed...

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Tailored near-infrared-emitting colloidal heterostructured quantum dots with enhanced visible light absorption for high performance photoelectrochemical cells

Journal of Materials Chemistry A ◽

10.1039/c9ta01052a ◽

2019 ◽

Vol 7 (17) ◽

pp. 10225-10230 ◽

Cited By ~ 5

Author(s):

Ali Imran Channa ◽

Xin Tong ◽

Jing-Yin Xu ◽

Yongchen Liu ◽

Changmeng Wang ◽

...

Keyword(s):

Quantum Dots ◽

Visible Light ◽

Light Absorption ◽

High Performance ◽

Near Infrared ◽

High Efficiency ◽

Photoelectrochemical Cells ◽

Visible Light Absorption ◽

Cds Qds

Near-infrared-emitting CuGaS2/CdS QDs with enhanced visible light absorption were developed to achieve high efficiency photoelectrochemical cells.

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Effects of Impurities on the Optical Properties of Quantum Dots, Wires, and Multiple Wells

MRS Proceedings ◽

10.1557/proc-325-49 ◽

1993 ◽

Vol 325 ◽

Author(s):

Garneit W. Bryant

Keyword(s):

Quantum Dots ◽

Optical Properties ◽

Simple Model ◽

Radiative Recombination ◽

Confined Systems ◽

Electron Hole ◽

Model Calculations ◽

Shallow Impurities ◽

Impurities And Defects

AbstractIdentifying and understanding the effects of impurities and defects in quantum dots, wires, and multiple wells is important for the development of nanostructures with good optical properties. Simple model calculations are presented to show when and how shallow impurities affect the radiative recombination of confined electron-hole pairs. Results for nanostructures are compared with results for bulk systems. Qualitative differences between bulk and confined systems are described.

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Resonant Light Absorption by Semiconductor Quantum Dots

Advances in Condensed Matter Physics ◽

10.1155/2009/654190 ◽

2009 ◽

Vol 2009 ◽

pp. 1-7 ◽

Cited By ~ 1

Author(s):

I. G. Lang ◽

S. T. Pavlov

Keyword(s):

Quantum Dots ◽

Magnetic Fields ◽

Cross Section ◽

Light Absorption ◽

Semiconductor Quantum Dots ◽

Electric And Magnetic Fields ◽

The Cross

The cross-section of light absorption by size-quantized semiconductor quantum dots (QD) is calculated in the case of a resonance with an exciton in cubical crystals of class. The interference of stimulating and induced electric and magnetic fields is taken into account. The cross-section of light absorption is proportional to the exciton nonradiative damping .

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