Violet Electroluminescence of AlInGaN–InGaN Multiquantum-Well Light-Emitting Diodes: Quantum-Confined Stark Effect and Heating Effect
Electroluminescence (EL) from AlInGaN-InGaN multiquantum-well violet light-emitting diodes is investigated as a function of forward bias. Two distinct regimes have been identified: 1) quantum-confined Stark effect at low and moderately high forward biases; 2) heating effect at high biases. In the different regimes, the low-temperature EL spectra exhibit different spectral features which are discussed in detail