用直接键合技术在480℃实现了InP/GaAs真的异质键合,用X射线光电子谱研究了样品的界面化刺学态。研究分析表明,InP/GaAs样品在480℃的键合能过程中发生相互扩散(除P外),键合界面处形成了由InP、GaAs、InAs和GaP构成的中间过渡层,过渡层厚。度约为6nm。
The bonded InP/GaAs wafers prepared by direct wafer bonding at 480℃ have been investigated by X- ray photoelectron spectroscopy. The experimental results indicate that InP and GaAs diffused into each other except phosphorus,and an interlayer composed of InP, GaAs, InAs and GaP exists between GaAs and InP wafers.