Temperature dependent reversal of voltage modulated light emission and negative capacitance in AlGaInP based multi quantum well light emitting devices
K Bansal, S Datta - Applied Physics Letters, 2013 - pubs.aip.org
We report a reversal in negative capacitance (NC) and voltage modulated light emission
from AlGaInP based multi-quantum well (QW) electroluminescent diodes under temperature
variation. Unlike monotonically increasing continuous wave light emission with decreasing
temperature, modulated electroluminescence and negative capacitance first increase to a
maximum and then decrease while cooling down from room temperature. Interdependence
of such electronic and optical properties is understood as a competition between defect …
from AlGaInP based multi-quantum well (QW) electroluminescent diodes under temperature
variation. Unlike monotonically increasing continuous wave light emission with decreasing
temperature, modulated electroluminescence and negative capacitance first increase to a
maximum and then decrease while cooling down from room temperature. Interdependence
of such electronic and optical properties is understood as a competition between defect …
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