Show simple item record

dc.contributor.authorDONEGAN, JOHN FRANCIS
dc.contributor.authorHEGARTY, JOHN
dc.date.accessioned2010-02-11T11:30:29Z
dc.date.available2010-02-11T11:30:29Z
dc.date.issued1996
dc.date.submitted1996en
dc.identifier.citationP. Rees, F. P. Logue, J. F. Donegan, J. F. Heffernan, C. Jordan, and J. Hegarty, Calculation of gain?current characteristics in ZnCdSe?ZnSe quantum well structures including many body effects., Applied Physics Letters, 67, (25), 1996, p3780 - 3782en
dc.identifier.otherY
dc.identifier.urihttp://hdl.handle.net/2262/37506
dc.descriptionPUBLISHEDen
dc.description.abstractThe gain-spontaneous recombination characteristics have been calculated for a 40 ? Zn0.8Cd0.2Se-ZnSe quantum well including many body effects. We examine the effect of the inclusion of the Coulomb enhancement on the gain spectra and the gain-current relationship. We show that, in the absence of the Coulomb enhancement, the threshold current density of a 340 ?m 40 ? Zn0.8Cd0.2Se-ZnSe quantum well laser is underestimated by approximately 40% and the lasing wavelength overestimated by 4 nm. Our calculation of the scattering lifetime for the first electron-heavy hole transition gives a lifetime varying between 29 and 37 fs, and shows that the carrier-phonon scattering mechanism in II-VI quantum wells is more dominant than in III-V materials. We also comment on the effect the neglect of Coulomb enhancement has on the calculation of leakage currents in a laser at threshold.en
dc.format.extent3780en
dc.format.extent3782en
dc.format.extent82906 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoenen
dc.publisherAmerican Institute of Physicsen
dc.relation.ispartofseriesApplied Physics Lettersen
dc.relation.ispartofseries67en
dc.relation.ispartofseries25en
dc.rightsYen
dc.subjectCADMIUM SELENIDESen
dc.subjectCHARGE CARRIERSen
dc.subjectCOULOMB FIELDen
dc.subjectELECTRON - PHONON COUPLINGen
dc.titleCalculation of gain?current characteristics in ZnCdSe?ZnSe quantum well structures including many body effects.en
dc.typeJournal Articleen
dc.type.supercollectionscholarly_publicationsen
dc.type.supercollectionrefereed_publicationsen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/jdonegan
dc.identifier.peoplefinderurlhttp://people.tcd.ie/jhegarty
dc.identifier.rssinternalid4864
dc.identifier.rssurihttp://dx.doi.org/10.1063/1.115381


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record