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MOCVD生长1.06μm波段InGaAs/GaAs单量子阱材料的发光特性研究 被引量:4

Optical Characteristics of 1.06μm InGaAs/GaAs Quantum Well Grown by MOCVD
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摘要 利用金属有机化学气相沉积(MOCVD)技术,在不同偏向角的GaAs衬底上生长了InGaAs/GaAs单量子阱外延结构。通过对样品室温光致发光(PL)谱测试结果的分析,讨论了衬底偏向角、量子阱层生长温度以及V/III比对外延片发光波长、发光强度及PL谱半峰全宽(FWHM)的影响。发现在相同生长条件下,对于InGaAs/GaAs应变量子阱结构,在GaAs(100)偏<111>A晶向较小偏向角的衬底上生长的样品PL谱发光强度较大,半峰全宽较窄;量子阱层低温生长的样品发光强度更强;增大量子阱层V/III比可以提高样品的发光强度,同时PL谱峰值波长出现红移。 InGaAs/GaAs single quantum well is grown on different misoriented substrates by the metal-organic chemical vapor deposition(MOCVD)technology.The samples are characterized by photoluminescence(PL)spectroscopy at room temperature.The effect of offset substrates,growth temperature and V/III ratio of quantum well layer on PL wavelength,intensity and full width at half-maximum(FWHM)has been studied.The samples with smaller offset from GaAs substrates(100)towards111show the higher PL intensity with narrower FWHM.The PL intensity increases with lower growth temperature of quantum well.The samples with high V/III ratio show high PL intensity while the PL wavelength exhibits red shift.
出处 《中国激光》 EI CAS CSCD 北大核心 2014年第11期173-177,共5页 Chinese Journal of Lasers
基金 国家自然科学基金(60976038 61107054 61308051) 国家自然科学基金委员会和中国工程物理研究院联合基金(U1330136) 吉林省科技发展计划(20100419 20140101192) 高功率半导体激光国家重点实验室基金(C1301)
关键词 材料 金属有机化学气相沉积 INGAAS/GAAS量子阱 偏向角 发光强度 半峰全宽 materials metal-organic chemical vapor deposition InGaAs/GaAs quantum well offset substrates photoluminescence intensity full width at half-maximum
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参考文献15

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二级参考文献28

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