Energy-transfer pumping of semiconductor nanocrystals using an epitaxial quantum well

@article{Achermann2004EnergytransferPO,
  title={Energy-transfer pumping of semiconductor nanocrystals using an epitaxial quantum well},
  author={Marc Achermann and Melissa A. Petruska and Simon Kos and Darryl L. Smith and Daniel David Koleske and Victor I. Klimov},
  journal={Nature},
  year={2004},
  volume={429},
  pages={642-646}
}
As a result of quantum-confinement effects, the emission colour of semiconductor nanocrystals can be modified dramatically by simply changing their size. Such spectral tunability, together with large photoluminescence quantum yields and high photostability, make nanocrystals attractive for use in a variety of light-emitting technologies—for example, displays, fluorescence tagging, solid-state lighting and lasers. An important limitation for such applications, however, is the difficulty of… 
Energy transfer from colloidal nanocrystals to strongly absorbing perovskites.
TLDR
The experimental results reveal the leading role of non-radiative ET at close distances, augmented by the waveguide emission coupling and light reabsorption at separations >10 nm, which opens the way to combining materials with different dimensionalities to achieve novel nanoscale architectures with improved photovoltaic and light emitting functionalities.
Spectroscopic and Device Aspects of Nanocrystal Quantum Dots.
TLDR
Recent advances in nanocrystal research related to applications of QD materials in lasing, light-emitting diodes (LEDs), and solar energy conversion are examined.
Highly Efficient Nonradiative Energy Transfer from Colloidal Semiconductor Quantum Dots to Wells for Sensitive Noncontact Temperature Probing
This study develops and shows highly efficient exciton-transferring hybrid semiconductor nanocrystal films of mixed dimensionality comprising quasi 0D and 2D colloids. Through a systematic study of
Highly efficient resonant coupling of optical excitations in hybrid organic/inorganic semiconductor nanostructures.
TLDR
A novel hybrid organic/inorganic nanocomposite in which alternating monolayers of J-aggregates of cyanine dye and crystalline semiconductor quantum dots are grown by a layer-by-layer self-assembly technique that can reach efficiencies of up to 98% at room temperature is described.
Single Photon Sources Based on Colloidal Nanocrystals and Two Photon Polariton Laser
When scaled down up to nanometer size, semiconductors can exhibit quantum confinement effects for both electrons and photons. One interesting feature of nano-sized materials is the strong size
Giant enhancement of optical nonlinearity in two-dimensional materials by multiphoton-excitation resonance energy transfer from quantum dots
Colloidal quantum dots are promising photoactive materials that enable plentiful photonic and optoelectronic applications ranging from lasers, displays and photodetectors to solar cells1–9. However,
Recent advances in quantum dot-based light-emitting devices: Challenges and possible solutions
Abstract Colloidal quantum dots (QDs) have been generating substantial interest due to their unique properties, which include high quantum efficiency, high color purity, low-cost solution
Spectroscopic insights into the performance of quantum dot light-emitting diodes
Lighting consumes almost one-fifth of all electricity generated today. In principle, with more efficient light sources replacing incandescent lamps, this demand can be reduced at least twofold. A
Förster resonant energy transfer from an inorganic quantum well to a molecular material: Unexplored aspects, losses, and implications to applications.
A systematic investigation of Förster resonant energy transfer (FRET) is reported within a hybrid prototype structure based on nitride single quantum well (SQW) donors and light emitting polymer
Light harvesting in hybrid epitaxial/colloidal nanostructures
The performance of light harvesting devices is improved by utilising resonance energy transfer. A hybrid structure of colloidal quantum dots (QDs) and a quantum well (QW) p-i-n heterostructure is
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 19 REFERENCES
Förster energy transfer from a semiconductor quantum well to an organic material overlayer
Abstract:We predict an efficient electronic energy transfer from an excited semiconductor quantum well to optically active organic molecules of the nearby medium (substrate and/or overlayer). The
Light-emitting diodes made from cadmium selenide nanocrystals and a semiconducting polymer
ELECTROLUMINESCENT devices have been developed recently that are based on new materials such as porous silicon1 and semiconducting polymers2,3. By taking advantage of developments in the preparation
Optical Nonlinearities and Ultrafast Carrier Dynamics in Semiconductor Nanocrystals
Femtosecond transient absorption in the visible and infrared spectral ranges has been applied to study carrier dynamics and mechanisms for resonant optical nonlinearities in CdSe nanocrystals (NCs)
Improved efficiencies in light emitting diodes made with CdSe(CdS) core/shell type nanocrystals and a semiconducting polymer
We report experiments on bilayer light emitting diodes made with organically capped CdSe(CdS) core/shell type semiconductor nanocrystals and an electroluminescent (EL) semiconducting polymer
Electroluminescence from single monolayers of nanocrystals in molecular organic devices
TLDR
A hybrid light-emitting diode (LED) that combines the ease of processability of organic materials with the narrow-band, efficient luminescence of colloidal quantum dots (QDs) is demonstrated and a 25-fold improvement in luminescent efficiency is observed.
Optical gain and stimulated emission in nanocrystal quantum dots.
TLDR
This work examined the competing dynamical processes involved in optical amplification and lasing in nanocrystal quantum dots and found that, despite a highly efficient intrinsic nonradiative Auger recombination, large optical gain can be developed at the wavelength of the emitting transition for close-packed solids of these dots.
(CdSe)ZnS Core-Shell Quantum Dots - Synthesis and Characterization of a Size Series of Highly Luminescent Nanocrystallites
We report a synthesis of highly luminescent (CdSe)ZnS composite quantum dots with CdSe cores ranging in diameter from 23 to 55 A. The narrow photoluminescence (fwhm ≤ 40 nm) from these composite dots
High-temperature stimulated emission in optically pumped InGaN/GaN multiquantum wells
Stimulated emission (SE) in optically pumped InGaN/GaN multiquantum well (MQW) structures grown by metalorganic chemical vapor deposition was experimentally studied in the temperature range of
Femtosecond 1P-to-1S electron relaxation in strongly confined semiconductor nanocrystals
High-sensitivity femtosecond transient absorption is applied to directly measure the population-depopulation dynamics of the lowest (1S ) and the first excited (1P ) electron states in CdSe
Influence of Si-doping on the characteristics of InGaN-GaN multiple quantum-well blue light emitting diodes
A detailed study on the effects of Si-doping in the GaN barrier layers of InGaN-GaN multiquantum well (MQW) light-emitting diodes (LEDs) has been performed. Compared with unintentionally doped
...
1
2
...