Absorption coefficients in AlGaInP lattice-matched to GaAs
Absorption coefficients in AlGaInP lattice-matched to GaAs
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AlGaInP 中的吸收系数与 GaAs 晶格匹配
DOI:
10.1016/j.solmat.2017.01.042
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发表时间:
2017
影响因子:
6.9
通讯作者:
Cheong J
中科院分区:
文献类型:
--
作者:
Cheong J
The absorption coefficient of AlGaInP lattice-matched to GaAs, across the composition range from AlInP to GaInP has been obtained from photocurrent versus wavelength measurements on seven homo-junction AlGaInP PIN diode structures. Due to the sensitivity of the photocurrent measurement technique, values of absorption down to 100cm−1have been determined close to the band-gap. From these, the bandgaps in this material system were extracted across the composition range and these corroborate data in the literature that shows the band-gap becoming indirect when the aluminium content,x>0.48.
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