Consistent optical and electrical determination of carrier concentrations for the accurate modeling of the transport properties of n-type Ge
Consistent optical and electrical determination of carrier concentrations for the accurate modeling of the transport properties of n-type Ge
复制标题
对载流子浓度进行一致的光学和电学测定,以准确模拟 n 型 Ge 的输运特性
DOI:
10.1016/j.mssp.2023.107596
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发表时间:
2023
影响因子:
4.1
通讯作者:
Kouvetakis, John
中科院分区:
文献类型:
--
作者:
Menéndez, José;Xu, Chi;Kouvetakis, John
A consistent methodology is presented to extract carrier concentrations inn-type Ge from measurements of the infrared dielectric function and the Hall effect. In the case of the optical measurements—usually carried out using spectroscopic ellipsometry—the carrier concentration is affected by the doping dependence of the conductivity effective mass, which is computed using a model of the electronic density of states that accounts for non-parabolicity and is fit to electronic structure calculations. Carrier concentrations obtained from Hall measurements require a knowledge of the Hall factor, which is arbitrarily set equal to unit in most practical applications. We have calculated the Hall factor forn-Ge using a model that accounts for scattering with phonons and with ionized impurities.We show that determinations of the carrier concentrationnusing our computed effective mass and Hall factor virtually eliminates any systematic discrepancy between the two types of measurement. We then use these results to compute majority carrier mobilities from measured resistivity values, to compare with measurements of minority carrier mobilities, and to fit empirical expressions to the doping dependence of the mobilities that can be used to model Ge devices.
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DOI:
--
发表时间:
2021
期刊:
Journal of Vacuum Science and Technology
影响因子:
--
作者:
Chi Xu;Ting;Dhruve A Ringwala;J. Menéndez;J. Kouvetakis
通讯作者:
J. Kouvetakis
DOI:
--
发表时间:
1958
期刊:
影响因子:
--
作者:
F. Trumbore;A. Tartaglia
通讯作者:
A. Tartaglia
DOI:
--
发表时间:
2015
期刊:
影响因子:
--
作者:
Chi Xu;J. Gallagher;P. Wallace;C. L. Senaratne;P. Sims;J. Menéndez;J. Kouvetakis
通讯作者:
J. Kouvetakis
DOI:
--
发表时间:
2015
期刊:
影响因子:
--
作者:
Chi Xu;J. Gallagher;C. L. Senaratne;P. Sims;J. Kouvetakis;J. Menéndez
通讯作者:
J. Menéndez
影响因子:
3.2
作者:
Chi Xu;J. Kouvetakis;J. Menéndez
通讯作者:
J. Menéndez