excitonic

excitonic

(ˌɛksaɪˈtɒnɪk)
adj
of or relating to an exciton or excitons
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
This contributed to the high color-purity excitonic emission and narrow FWHM of PL spectra of NBE-T-CQDs as demonstrated by the temperature-dependent PL spectra.
These findings represent a crucial step toward the understanding and control of excitonic effects in van der Waals heterostructures and devices.
The double peak is caused by excitonic levels and appears, whenever the GaAs buffer is extremely pure [32].
Recently, Bittner and Silva proposed that energy level fluctuations due to thermal motions can lead to strong quantum mechanical coupling between excitonic and charge-separated states [23].
When the size of a nanostructure becomes small enough (typically, smaller than the free charge carrier mean-free path in conductors, or exciton Bohr radius in excitonic semiconductors), its electronic structure (and thus its dielectric function) can depart from that of the corresponding bulk material and depend on the nanostructure size.
As ZnO nanomaterials have essential excitonic blue and near-UV emission, which has green luminescence associated with [O.sub.2] vacancies [108,109], and for cellular imaging, there are numerous reports existing in previous studies on the utilization of ZnO nanomaterials.
The exponent n is -1, -1/2,0 (ln), or +1/2 for excitonic, 1-dimensional, 2-dimensional, or 3-dimensional CPs, respectively.
However, this energy gap becomes higher (1.6-2.44 eV) for nanocrystalline materials because the sizes of the crystallite become comparable to the Bohr excitonic radius, so this difference could be attributed to quantum confinement effect of PbS nanocrystals [5].
The luminescence at 450 nm excited in the region near the edge of the intrinsic absorption of the host material, whose intensity is strongly increased at low temperature, can be attributed to excitonic emission (luminescence of self-trapped excitons or near-defect self-trapped excitons).
ZnO is a self-activated crystal of hexagonal wurtzite structure with direct wide band gap energy of 3.37 eV at room temperature [25, 26], and has a strong excitonic emission in the ultraviolet range even at room temperature due to its larger excitonic binding energy of 60 meV which is significantly larger than other materials [27].
The absorption band is characteristic of the high-level excitonic excitation absorption of a semiconductor, clearly showing the successful deposition of Pb-Sb-S QDs on the ZnO surface.