4.35 材料换成砷化镓,重做习题4.34。-|||-4.34 求下列条件下硅的热平衡电子浓度与空穴浓度:-|||-(a) T=300K =(10)^15(cm)^-3 ,_(a)=4times (10)^15(cm)^-3 。-|||-(b) T=300K ,_(d)=3times (10)^16(cm)^-3 ,_(a)=0-|||-(c) T=300K _(d)=(N)_(a)=2times (10)^15(cm)^-3 。-|||-(d) T=375K _(d)=0 _(a)=4times (10)^15(cm)^-3 。-|||-(e) =450k _(d)=(10)^14(cm)^-3 ,_(a)=(O)_(a)