Hydrogen Cracking by a Pt / Al2 O 3 Catalyst and Its Propagation to GaAs Substrates for TMGa‐TEAs Organometallic Vapor‐Phase Epitaxy

Abstract

nine days). The discharge and charge currents were 0.5 and 0,3 mA, respectively. The discharge and charge were terminated at a Li/Fe of 0.4. Although the first discharge curve was different from the subsequent ones, the ceil showed excellent performance over twenty cycles. A very interesting observation is that the cell voltage at the end of the first and subsequent discharges is higher than the voltage before the first discharge. This has been observed with cells using the NbSe3 cathode (10). This phenomenon is related to the discharge and charge mechanism. This is currently being investigated, and will be discussed in future communications.

Effect of Pt / Al2 O 3 Catalyst on GaAs Grown by Low Pressure TEAs‐TMGa Organometallic Vapor‐Phase Epitaxy

“…A detailed description of the spillover effect and the thermal etching experiments confirming the existence of spillover effect in the Pt/AI203-GaAs system are given in our previous paper. 12 Here, we consider the mean-free paths at various pressures. The hydrogen molecules are cracked into atoms by the dissociative adsorption when they collide with the catalyst surface.…”