relation: http://eprints.zu.edu.ua/8344/ title: Bandgap dependence of current crowding effect in 3–5 μm InAsSb/InAs planar light emitting devices creator: Malyutenko, V. K. creator: Zinovchuk, A. V. creator: Malyutenko, O. Y. subject: QC Фізика description: Electroluminescence power profiles and 2D micropatterns have been obtained from InAsSb/InAs planar LEDs tuned at several wavelengths within the 3–5 μm band. Light confined to a small region around the top opaque contact was observed (cw mode, I > 10 mA, T = 300 K). A computer simulation showed that the reason behind the decrease of the emitting area is the current crowding that ensures non-uniform injection into the active region. The effect becomes more apparent in longer wavelength devices (emitting areas of 3.4 and 4.2 μm emitting devices are related as >10 : 1), providing direct evidence that the current crowding is affected by the bandgap energy of an active layer. publisher: Institute of Physics date: 2008 type: Стаття type: PeerReviewed format: text language: uk identifier: http://eprints.zu.edu.ua/8344/1/Band%20gap.pdf identifier: Malyutenko, V. K., Zinovchuk, A. V., Malyutenko, O. Y. (2008) Bandgap dependence of current crowding effect in 3–5 μm InAsSb/InAs planar light emitting devices. Semiconductor Science and Technology, 23. 085004-1. relation: http://iopscience.iop.org/ language: english