The time dependence of conductivity due to polarization of electron-holes pairs by the electric field of the THz pulse is found as a function of the sum of the electron-hole mobilities and delay time between the pump and probe pulses.
Fig. 26 shows the four steps by which OSCs are believed to operate; the process ultimately leads to the photogeneration of excitons and collection of charges in a simple bilayer device architecture. In the first step, bound electron–hole pairs are generated within one of the organic layers ...
Kim, Y., Smith, J.G. & Jain, P.K. Harvesting multiple electron–hole pairs generated through plasmonic excitation of Au nanoparticles.Nature Chem10, 763–769 (2018). https://doi.org/10.1038/s41557-018-0054-3 Download citation Received07 November 2017 ...
the injected electrons from the electron beam unbalance the equilibrium of the semiconductor and electron/ hole pairs are created. Within the depletion region, the natural field removes excess charge, creating increased reversed bias current. As a result, EBIC signals are generated primarily from burie...
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One of the most prominent features of the specific type of QDs that are made by self-assembly is their optical activity, i.e., the ability to absorb photons, which excite electrons from the valence-band to the conduction-band states, creating interacting electron-hole pairs called excitons. ...
Hole Scavenging and Photo-Stimulated Recombination of Electron−Hole Pairs in Aqueous TiO2 Nanoparticles 来自 ACS 喜欢 0 阅读量: 21 作者:IA Shkrob,MC Sauer,Jr.摘要: It is shown that 532 and 1064 nm laser photoexcitation of trapped electrons generated by 355 nm photolysis of aqueous titania (...
For metallic substrates, the role of the non-adiabatic electronic excitation channel has been controversially discussed, as the absence of a band gap could favour an easy coupling to a manifold of electron–hole pairs of arbitrarily low energies. We analyse this situation for the highly exothermic...
The photocurrent densities listed inTable VII.3are conservative estimates based upon the discussions inChapters III through VIChapters IIIChapters IVChapters VChapters VIand upon work elsewhere upon various collection models [19,22]. The distribution of the hole-electron pairs which gives rise to this...
(Eh). Electron-hole pairs are generated from such collisions, with the total number being exponentially dependent on the reciprocal of the electric field, -1/Emax. The electrons produced in this manner are either attracted to the drain (adding to the drain current). The generated holes, enter...