Possibilities and limitations in using transmission electron microscopy to characterize pure NaAlH4 and transition metal enhanced NaAlH4 have been investigated in detail. NaAlH4 is extremely sensitive to O-2 and H₂O and must be handled under inert atmosphere at all times. Furthermore, it is highly u...

The resistance at the metal contact-semiconductor interface and recombination at the passivating layer-semiconductor interface are two important bottlenecks for improving the performance of current solar cells. These processes are quantum mechanical by nature, but so far most studies and attempts to...

We report current-voltage and spectral response characteristics of high density InAs/GaAs quantum dot (QD) solar cells with different positions where dots are located. The short circuit current density (J(sc)), open circuit voltage (V-oc), and external quantum efficiency of these cells under air mas...

Transmission electron microscopy (TEM) is an essential tool in the study of catalyst and hydrogen storage materials. Two fundamental obstacles are the reactivity with the atmosphere, which make sample handling and transfer procedures essential, and the stability of the sample under the electron beam...

Transmission electron microscopy has been used to study ball milled and H cycled NaAlH4 with 10 mol% TiCl3. Isolated from the main phases in this hydrogen storage system, nanocrystalline aggregates of fcc TiH (x) (0a parts per thousand currency signx < 0.67) were found. The value of x was determi...