Question

Indium(III) phosphide is a semiconducting material that has been frequently used in lasers, light-emitting diodes (LED), and fiberoptic devices. This material can be synthesized at 900. K according to the following reaction:
In(CH3)3(g) + PH3(g) → InP(s) + 3CH4(g)
a. If 2.56 L In(CH3)3 at 2.00 atm is allowed to react with 1.38 L PH3 at 3.00 atm, what mass of InP(s) will be produced assuming the reaction is 87% efficient?
b. When an electric current is passed through an optoelectronic device containing InP, the light emitted has an energy of 2.03 × 10-19 J. What is the wavelength of this light, and is it visible to the human eye?
c. The semiconducting properties of InP can be altered by doping. If a small number of phosphorus atoms are replaced by atoms with an electron configuration of [Kr] 5s24d105p4, is this n-type or p-type doping?


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  • CreatedMay 05, 2015
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