InAs QDs on (111)-faceted Si (001) hollow substrates with strong emission at 1300 nm and 1550 nm
InAs QDs on (111)-faceted Si (001) hollow substrates with strong emission at 1300 nm and 1550 nm
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(111) 面 Si (001) 空心基板上的 InAs 量子点在 1300 nm 和 1550 nm 处具有强发射
DOI:
10.1063/1.5043169
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发表时间:
2018-07
影响因子:
4
通讯作者:
Zhang Jian-Jun
中科院分区:
文献类型:
--
作者:
Wei Wen-Qi;Wang Jian-Huan;Zhang Bin;Zhang Jie-Yin;Wang Hai-Ling;Feng Qi;Xu Hong-Xing;Wang Ting;Zhang Jian-Jun
Highly uniform (111)-faceted Si sawtooth with underlying hollow structures is formed by homo-epitaxy on a U-shape patterned Si (001) substrate. With in-situ III-V growth on such substrates by the III-V/IV dual chamber molecular beam epitaxy, a high-quality GaAs layer is obtained with threading dislocation density approximately ~ 106 cm−2 via electron channeling contrast image (ECCI) method. Strong room-temperature emission of InAs/GaAs and InAs/InGaAs quantum dots (QDs) at O-band (1300 nm) and C/L-band (1550 nm) telecommunication wavelengths are both achieved on Si (001) substrates.
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