Ratiometric fluorescent nanosensors for selective detecting cysteine with upconversion luminescence

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	Ratiometric fluorescent nanosensors for selective detecting cysteine with upconversion luminescence
	Guan, Y. L.; S. N. Qu; B. Li; L. M. Zhang; H. P. Ma and L. G. Zhang
刊名	Biosensors & Bioelectronics
	2016
卷号	77
英文摘要	The 1/f noise is measured under the bias one tenth the threshold current of the InGaAs quantum well high-power semiconductor laser diodes (LDs). The noise origin is analyzed using the current and voltage 1/f noise and dynamic resistance characteristics. Then the relationship between the noise and the internal defect is analyzed according to the differences of LDs in the noise intensity and the fluctuation near the initial electrical derivative peak. The result shows that with currents 0.13 mA-1 mA, the dynamic resistance of the LDs is in the magnitude of hundreds of ohms, when the changing rates of both the noise intensity and the resistance reflect the typical features of the active region, while with currents 8 mA-32 mA, the dynamic resistance drops under 10 Omega and its changing rate slows down, when the 1/f noise intensity trend shows the features of the contact resistance. Moreover, the electrical derivative of LDs with weaker noise fluctuates milder and has more conspicuous initial peaks, while the electrical derivative of other LDs fluctuates acuter and hardly shows distinct initial peaks. The results indicate that the 1/f noise from the active region can be measured under bias currents far lower than the threshold currents of the LDs, and it can indicate the defects in the active region and further the reliability of the device. (C) 2015 Elsevier Ltd. All rights reserved.
收录类别	SCI ; EI
语种	英语
内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/56937]
专题	长春光学精密机械与物理研究所_中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Guan, Y. L.,S. N. Qu,B. Li,et al. Ratiometric fluorescent nanosensors for selective detecting cysteine with upconversion luminescence[J]. Biosensors & Bioelectronics,2016,77.
APA	Guan, Y. L.,S. N. Qu,B. Li,L. M. Zhang,&H. P. Ma and L. G. Zhang.(2016).Ratiometric fluorescent nanosensors for selective detecting cysteine with upconversion luminescence.Biosensors & Bioelectronics,77.
MLA	Guan, Y. L.,et al."Ratiometric fluorescent nanosensors for selective detecting cysteine with upconversion luminescence".Biosensors & Bioelectronics 77(2016).