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dc.contributor.authorKučera, L.
dc.contributor.authorMacháč, J.
dc.contributor.authorMíšek, J.
dc.date.accessioned2012-08-06T11:51:52Z
dc.date.available2012-08-06T11:51:52Z
dc.date.issued1982-02
dc.identifier.citation• Kučera L., Macháč J., Mišek J.: Effect of feedback carrier excitation on LED external quantum efficiency, IEE Proc. Solid-State and Electron Devices, Pt. I, Vol. 129, No. 1, 1982, p. 28.cze
dc.identifier.urihttp://hdl.handle.net/10467/12426
dc.description.abstractSelf-absorption of photons generated by prior luminescence processes affects both the steady-state and transient characteristics of LEDs. In this study we confine ourselves to one of the most important steadystate parameters-external quantum efficiency. It is shown that the photon self-absorption increases the injected carrier concentration, and consequently the emitted photon flux. This results in an increase in LED external quantum efficiency. A detailed analysis of this phenomenon is presented, and a simplified evaluation of its influence on the external quantum efficiency is given. Our calculation also takes into account multiple internal reflection of light generated inside the LED. The obtained results are applied to a diffused GaAs (Zn, Te) surface-emitting LED. It is estimated that the feedback carrier excitation (re-excitation) due to selfabsorption increases the LED external quantum efficiency by about 60% and multiple internal reflections by about 12%.eng
dc.language.isocescze
dc.publisherIEEEcze
dc.rights© 1982 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.eng
dc.subjectsemiconductor devices and materialseng
dc.subjectdiodeseng
dc.subjectlight-emitting diodeseng
dc.titleEffect of feedback carrier excitation on LED external quantum efficiencycze
dc.typečlánek z tištěného periodikacze
dc.identifier.doi10.1049/ip-i-1.1982.0004


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