Using the time-of-flight photocurrent measurements, we investigate the hole transport properties of polymer 2-methoxy, 5-(2-ethyl-hexyloxy)-1, 4-phenylene vinyl
We report on the realization of GaAs/AlGaAs quantum cascade lasers with an emission wavelength of 9.1 μm above the liquid nitrogen temperature. With optimal cu
Similarity in the electron diffraction pattes of the Cd5.7 Yb icosahedral quasicrystal and its cubic approximant Cd6 Yb crystal is studied in detail by using tr
We report that the composites of ZnO/porous Si (PS) can exhibit intensively white photoluminescence (PL)under proper excitation wavelength. The PS sample is for