Novel gallium arsenide precursor and low temperature method of preparing gallium arsenide therefrom
AssigneeCornell Research Foundation, Inc.
InventorsKlaus H. Theopold, Erin K. Byrne
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AssigneeCornell Research Foundation, Inc.
InventorsKlaus H. Theopold, Erin K. Byrne
Estimating the term…
A novel gallium arsenide precursor has the formula R.sub.2 GaAs(SiR').sub.2 wherein R is selected from the group consisting of alkyl substituted cycloaliphatic group and alkyl substituted aromatic group and R' is alkyl. Preferably, R is pentamethylcyclopentadienyl and R' is methyl. The precursor is reacted with an alcohol, preferably ethanol or t-butanol at a temperature ranging from -20.degree. to 60.degree. C., preferably at room temperature, under water free conditions to form solid gallium arsenide and byproducts which are liquid under the reaction conditions. The gallium arsenide forming reaction may be aided by a catalyst providing amount of a substance which is considered to react with excess alcohol reactant to generate a catalytic amount of HCl, e.g., (CH.sub.3).sub.3 SiCl or [R(Cl)GaAs(SiR'.sub.3).sub.2 ].sub.n wherein R is pentamethylcyclopentadienyl and R' is methyl and in solution in benzene n is 1 and 3.
Process for preparing gallium arsenide comprising the steps of reacting an arsinogallane with an alcohol which is present in stoichiometric excess and has the formula R"(OH).sub.x wherein R" is alkyl containing from 1 to 10 carbon atoms and x ranges from 1 to 3, at a temperature ranging from -20.degree. C. to 60.degree. C. under water free conditions to form solid gallium arsenide which precipitates and by-products which are liquid or dissolved under the reaction conditions, said arsinogallane having the formula R.sub.2 GaAs(SiR'.sub.3).sub.2 wherein R is selected from the group consisting of cycloaliphatic group, alkyl substituted cycloaliphatic group and alkyl substituted aromatic group and R' is alkyl.
Dependencies are inferred from the claim text.