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...>[[Main_Page#Electronic Band Structure of Organic Materials|Return to Band Structure Menu]]</td> <td style="text-align: right; width: 33%">[[Electronic Structure of Hydrogen| Next Topic]]</td>

<td style="text-align: left; width: 33%">[[Introduction to Band Structure|Previous Topic]]</td> ...>[[Main_Page#Electronic Band Structure of Organic Materials|Return to Band Structure Menu]]</td>

...>[[Main_Page#Electronic Band Structure of Organic Materials|Return to Band Structure Menu]]</td> <td style="text-align: right; width: 33%">[[Electronic States vs Molecular Levels| Next Topic]]</td>

...>[[Main_Page#Electronic Band Structure of Organic Materials|Return to Band Structure Menu]]</td> The literature can be confusing in using the terminology of electronic states vs electrical levels.

...>[[Main_Page#Electronic Band Structure of Organic Materials|Return to Band Structure Menu]]</td> The same kind of analysis can found in X-ray structure determination of crystals. They use this convention for phase factor:

<td style="text-align: right; width: 33%">[[Band Regime versus Hopping Regime| Next Topic]]</td> ...n one it is in the hopping regime, if it is significantly higher it is the band regime.

<td style="text-align: right; width: 33%">[[Electronic Coupling| Next Topic]]</td> The '''band regime''' and '''hopping regime''' are the two limiting systems for transpo

<td style="text-align: left; width: 33%">[[Electronic Structure of Hydrogen|Previous Topic]]</td> ...>[[Main_Page#Electronic Band Structure of Organic Materials|Return to Band Structure Menu]]</td>

<td style="text-align: left; width: 33%">[[Band Regime versus Hopping Regime|Previous Topic]]</td> <td style="text-align: right; width: 33%">[[Model Calculations of Electronic Coupling| Next Topic]]</td>

<td style="text-align: left; width: 33%">[[Electronic Coupling|Previous Topic]]</td> ...tgart have characterized oligo- acene single crystals. This clearly shows band regime at low temperature with mobility decreasing with increasing temperat

*[[Band-gap]] *[[Electronic Coupling Between Orbitals]]

...is_stokes.png|thumb|200px|Emission and absorption spectra showing vibronic structure]] ...resulting in a change in the &pi;-bond densities creating a quinoline-like structure. In between the rings, there is a double bond, single bond, double bond, or

<td style="text-align: left; width: 33%">[[Model Calculations of Electronic Coupling|Previous Topic]]</td> The next question is what happens when the electronic coupling is too small?

|[[Main_Page#Electronic_Band_Structure_of_Organic_Materials |Electronic Band Structure of Organic Materials]]

This simplified diagram shows the change in band position-- potential energy as a function of distance across the device whe [[category:electronic band structure]]

|conduction band |X-ray absorption fine-structure (spectroscopy)

Liquid crystals can be classified by their behavior and by their physical structure. ...where the chains align in a direction, or a chain where there is comb-like structure with side chains that hang off the polymer. The director is oriented either

*The band gap (Eg) is decreases with increasing conjugation length. ==== Effect of polymer structure ====

DWDM - Dense wave division multiplexer- multiplexes signals in the 1550nm band and uses EDFA We must be able must be able to seamlessly handle electronic (electron) and photonic (photons or optical) signals including converting b

...of 10^-15 sec if the photon energy is not in resonance with any electronic transition). If a second photon is absorbed within this lifetime, the two- ...small for large negative values of the BOA (corresponding to the resonance structure on the left side), reaches a maximum when the BOA increases, and then it go

<td style="text-align: right; width: 33%">[[Structure-Property Relationships| Next Topic]]</td> ...of zero. The design therefore must include both arranging for the desired electronic properties, but also configuring the molecule so that those molecules will

...band. The ions then lose vibrational energy and drop to the bottom of the band which is the upper laser level. The laser transition then occurs to a vibra Between electronic energy levels of atoms

...al to use the sum-over states expression because it gives an idea of which electronic states matter. Also, frequency dependence can easily be introduced. The sam ...the same. This allows one to deal with materials that have a much smaller band gap, especially if the input frequency is in the IR.