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In this paper the authors present a comprehensive study of the threshold current and its temperature dependence in novel direct band-gap Ga(NAsP)/GaP QW lasers which provide a potential route to lattice matched monolithic integration of long term stable semiconductor lasers on silicon. It is found that near room temperature, the threshold current is dominated by nonradiative recombination accounting...
In order to extend the photo response of GaAs to optical telecommunication wavelengths, In and N can be incorporated into GaAs to yield a perfect lattice match of InxGa1-xAs1-yNy with GaAs with a bandgap that strongly decreases with increasing N composition. The potential usage of such a material as photodetectors and photovoltaic applications has been reported.In this work, we investigate the dark...
We report on the temperature dependent properties of GaNAsP/GaP-based SQW lasers. While the radiative component of threshold is relatively temperature stable, the threshold current increases strongly with temperature and is attributed to a leakage process.
In this paper GaNP/GaP LED structures are much simpler to grow than conventional process, chip processing uses existing technology, and GaNP/GaP LEDs exhibit only a small wavelength shift with injection current. With increasing temperature, the electroluminescence (EL) intensity decreases. Thus, GaNP/GaP LEDs are in the process of being commercialized.
We have grown a series of bulk GaInNAs p-i-n diodes and identified some of the dark current mechanisms present in our devices. With a nitrogen composition of ~4 %, the band gap can be reduced to 0.94 eV. We also demonstrate that low dark current density is achievable without compromising the absorption and hence quantum efficiency up to 1.4 mum.
We present optical and electrical characterization data obtained from bulk GalnNAs (lattice-matched to GaAs) diodes with varying GalnNAs composition. Good lattice-matching to GaAs, low reverse dark current and long wavelength absorption were achieved simultaneously, without the aid of post-growth annealing and use of antimony during the growth.
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