Semiconductor quantum dots devices: Recent advances and application prospects

Reithmaier, Johann Peter; Somers, A.; Kaiser, W.; Deubert, S.; Gerschutz, F.; Forchel, A.; Parillaud, O.; Krakowski, M.; Alizon, R.; Hadass, D.; Bilenca, A.; Dery, Hanan; Mikhelashvili, V.; Eisenstein, G.; Gioannini, Mariangela; Montrosset, Ivo; Berg, T.W.; Poel, Mike van der; Mørk, Jesper; Tromborg, B.

doi:10.1002/pssb.200671518

Cited by 14 publications

(8 citation statements)

References 27 publications

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“…Perhaps the most important contributions have been made for optoelectronic systems. Taking advantage of quantummechanical effects, these new devices are able to control many properties of macroscopic materials [1].…”

Section: Introductionmentioning

confidence: 99%

Binding energy of heavy excitons in spherical quantum dots under hydrostatic pressure

Moscoso-Moreno

Franco

Silva–Valencia

2009

Physica Status Solidi (b)

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The binding energy of heavy hole excitons in a spherical GaAs–Ga1–x Alx As quantum dot under isotropic hydrostatic pressure was calculated using the Hylleraas coordinate system and a variational approach within the approximation of the effective mass. The influences of hydrostatic pressure on the effective masses of the electron and the heavy hole, the dielectric constant and the conduction‐ and valence‐band offsets between the well and the barriers are taken into account in the calculation. The binding energy is computed as a function of hydrostatic pressure, the dot sizes and the Al(x) concentration. The results show that the binding energy derived from exciton increases with the pressure, especially for small quantum dots. Also, we have found that the binding energy increases with the pressure and the concentration for a fixed quantum dot radius, which can be useful for technological applications. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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Section: Introductionmentioning

confidence: 99%

Binding energy of heavy excitons in spherical quantum dots under hydrostatic pressure

Moscoso-Moreno

Franco

Silva–Valencia

2009

Physica Status Solidi (b)

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“…If luminescence is the desired detection signal, then inorganic nanocrystals or quantum dots (QDs) are a preferred chemosensing scaffold, owing to their unique photophysical properties. − Typically, the luminescence of suitably prepared QDs is unperturbed by changes in their environment (i.e., luminescence is constant in both the presence and absence of analyte), affording a suitable framework for ratiometric sensing, which relies on signal changes relative to an internal standard to quantify the amount of analyte.…”

Section: Introductionmentioning

confidence: 99%

Metabolic Tumor Profiling with pH, Oxygen, and Glucose Chemosensors on a Quantum Dot Scaffold

et al. 2013

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Synopsis Acidity, hypoxia and glucose levels characterize the tumor microenvironment rendering pH, pO2 and pGlucose, respectively, important indicators of tumor health. To this end, understanding how these parameters change can be a powerful tool for the development of novel and effective therapeutics. We have designed optical chemosensors that feature a quantum dot and an analyte-responsive dye. These non-invasive chemosensors permit pH, oxygen, and glucose to be monitored dynamically within the tumor microenvironment by using multiphoton imaging.

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“…30,51,63 Fischbeck et al 64 reported the first polymer waveguide using Nanocrystals and clusters such as quantum dots (QDs) are chemically synthesized semiconducting nanometer-sized crystalline particles, which exhibit unique optical and spectroscopic properties, such as broad absorption, narrow and tunable emission, resistance to photobleaching, efficient luminescence, and long luminescent lifetimes. 72 They are promising building blocks for a range of photonic applications, [73][74][75] as well as the immerging fields of medicinal and biological imaging applications. 76 While the particles easily disperse in various solvents, to utilize their functionality in practical integrated photonic systems, they need to be encapsulated into a more robust but highly functional matrix.…”

Section: Applications Photonicsmentioning

confidence: 99%