Physica Status Solidi (C) Current Topics in Solid State Physics 11 652-655 2014年1月 [査読有り]
Recombination dynamics and internal quantum efficiency (IQE) of green luminescent InGaN nanowires with different crystalline qualities have been studied by means photoluminescence (PL) and time-resolved PL spectroscopy. Temperature- and excitation...
We have studied the residual strain or stress in semi-polar (1-101) GaN and conventional (0001) GaN by means of Raman spectroscopic analyses. As the results, it was found that the strain tensor for a (1-101) GaN grown on (001) Si was smaller than ...
Japanese Journal of Applied Physics 52 2013年8月 [査読有り]
The internal quantum efficiency (IQE) of InGaN nanowires with different emission wavelength of 485, 515, 555, and 580nm has been studied by means of photoluminescence (PL) spectroscopy. It was found from the analysis of IQE as a function of excita...
We have studied the self-estimation for the position of autonomous robot. It was carried out by typical template-matching method using a video camera. The detection of human as obstacles has been also studied. As the results, it was shown that the...
We have studied the residual strain and stress in semi-polar (1-101)GaN and conventional (0001)GaN grown on Si by means of Raman spectroscopy. By adopting the stress coefficients reported in the references, the residual strain of samples were dedu...
