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Openai/69174844-9774-8012-8b69-32262ca5e35a
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=== 理想情况下(无界面态、无电荷)金属与半导体接触时的肖特基势垒高度(对电子) === ΦB,n=ϕm−χ\Phi_{B,n} = \phi_m - \chiΦB,n=ϕm−χ * ϕm\phi_mϕm:金属功函数(从真空到金属费米能级的能量) * χ\chiχ:半导体电子亲和势(从真空到导带底 EcE_cEc 的能量) : 费米平衡后,半导体侧相对金属的'''内建势(built-in)'''可写为(以电压量表示) Vbi=ΦB,n−Ec−EFqV_{bi} = \Phi_{B,n} - \frac{E_c - E_F}{q}Vbi=ΦB,n−qEc−EF 其中 Ec−EFE_c-E_FEc−EF 与掺杂浓度 NDN_DND 有关(越重掺杂 EFE_FEF 越接近导带)。
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