TY - GEN
T1 - Visible photoluminescence from InGaPN/GaP lattice-matched single quantum well structures grown by MOVPE
AU - Kaewket, D.
AU - Tungasmita, S.
AU - Sanorpim, S.
AU - Katayama, R.
AU - Onabe, K.
PY - 2007/8/28
Y1 - 2007/8/28
N2 - Optical properties of InxGa1-xP1-xN ylatticematched single quantum wells(SQWs) withdifferent well widths (Lz = 1.6 - 6.4 nm) at different In (x = 0.050 - 0.135) and N (y = 0.025 - 0.071) concentrations have been investigated by lowtemperature photoluminescence (PL) and PL-excitation (PLE). The PL spectra showed the strong visible emission from the samples which attracted to a variety of optoelectronic device applications such as light emitting and laser diodes. Comparing to the bulk film, the PL peak position and the fundamental absorption edge of PLE spectra exhibit blue-shift, which correspond to the principally determined by the quantum confinement effect to the well. Comparison between the absorption edge of PLE spectra and the finite square well calculation demonstrate that the effective bandgap energy of InGaPN/GaP system is might be originated from the N-related localized states. With increasing N concentration, the PL peak position exhibits red-shift, which is due to the lowering conduction band edge of InGaPN. On the other hand, the integrated PL intensity is significantly decreased for the SQW with higher In and N concentrations. This probably caused by the larger number of non-radiative process which associated to N-induced trap states.
AB - Optical properties of InxGa1-xP1-xN ylatticematched single quantum wells(SQWs) withdifferent well widths (Lz = 1.6 - 6.4 nm) at different In (x = 0.050 - 0.135) and N (y = 0.025 - 0.071) concentrations have been investigated by lowtemperature photoluminescence (PL) and PL-excitation (PLE). The PL spectra showed the strong visible emission from the samples which attracted to a variety of optoelectronic device applications such as light emitting and laser diodes. Comparing to the bulk film, the PL peak position and the fundamental absorption edge of PLE spectra exhibit blue-shift, which correspond to the principally determined by the quantum confinement effect to the well. Comparison between the absorption edge of PLE spectra and the finite square well calculation demonstrate that the effective bandgap energy of InGaPN/GaP system is might be originated from the N-related localized states. With increasing N concentration, the PL peak position exhibits red-shift, which is due to the lowering conduction band edge of InGaPN. On the other hand, the integrated PL intensity is significantly decreased for the SQW with higher In and N concentrations. This probably caused by the larger number of non-radiative process which associated to N-induced trap states.
KW - InGaPN
KW - Metalorganic vapor phase epitaxy (MOVPE)
KW - Photoluminescence (PL)
KW - Photoluminescenceexcitation (PLE)
KW - Single quantum wells (SQWs)
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U2 - 10.1109/NEMS.2007.352114
DO - 10.1109/NEMS.2007.352114
M3 - Conference contribution
AN - SCOPUS:34548126878
SN - 1424406102
SN - 9781424406104
T3 - Proceedings of the 2nd IEEE International Conference on Nano/Micro Engineered and Molecular Systems, IEEE NEMS 2007
SP - 695
EP - 700
BT - Proceedings of the 2nd IEEE International Conference on Nano/Micro Engineered and Molecular Systems, IEEE NEMS 2007
T2 - 2007 2nd IEEE International Conference on Nano/Micro Engineered and Molecular Systems, IEEE NEMS 2007
Y2 - 16 January 2007 through 19 January 2007
ER -