Low-frequency generation-recombination noise behaviors of blue/violet-light-emitting diode

Dang-Hui Wang; Tian-Han Xu

doi:10.7498/aps.68.20190189

Journals >Acta Physica Sinica >Volume 68 >Issue 12 >Page 128104-1 > Article

Acta Physica Sinica
Vol. 68, Issue 12, 128104-1 (2019)

Low-frequency generation-recombination noise behaviors of blue/violet-light-emitting diode

Dang-Hui Wang^* and Tian-Han Xu

DOI: 10.7498/aps.68.20190189 Cite this Article

Dang-Hui Wang, Tian-Han Xu. Low-frequency generation-recombination noise behaviors of blue/violet-light-emitting diode[J]. Acta Physica Sinica, 2019, 68(12): 128104-1 Copy Citation Text

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Fig. 1. Principle schematic of p-n junction LED.p-n结型LED发光原理图

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Fig. 2. Measurement schematic of low frequency noise for LED.LED低频噪声测试原理图

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Fig. 3. PL measurement at room temperature.LED室温PL测试

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Fig. 4. V-I characteristic transfer curve of LED. LED的V-I特性测试曲线

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Fig. 5. Relationships between current PSD and frequency for InGaN/GaN LED.InGaN/GaN LED的电流噪声PSD与频率的关系图

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Fig. 6. Fitting results of g-r noise using Eq. (5). 根据(5)式拟合g-r噪声参数

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Fig. 7. Fluctuation evolution relationships of current PSD S_I/I² and current I. 电流噪声PSD涨落S_I/I²与电流I之间的关系演变

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低频噪声类型	测试电流/mA
低频噪声类型	0.1	10	27	50	80	180
白噪声	5.14 × 10^–18	1.10 × 10^–17	6.12 × 10^–17	2.36 × 10^–17	9.23 × 10^–18	9.23 × 10^–18
1/f 噪声	$\displaystyle\frac{{4.61 \times {{10}^{ - 16}}}}{{{f^{0.65}}}}$	$\displaystyle\frac{{1.82 \times {{10}^{ - 15}}}}{{{f^{0.83}}}}$	$\displaystyle\frac{{1.01 \times {{10}^{ - 13}}}}{{{f^{0.90}}}}$	$\displaystyle\frac{{5.29 \times {{10}^{ - 13}}}}{{{f^{0.95}}}}$	$\displaystyle\frac{{{\rm{3}}.{\rm{32}} \times {{10}^{ - 1{\rm{2}}}}}}{{{f^{{\rm{1}}.{\rm{09}}}}}}$	$\displaystyle\frac{{{\rm{5}}.{\rm{04}} \times {{10}^{ - 1{\rm{1}}}}}}{{{f^{{\rm{1}}.{\rm{09}}}}}}$
g-r噪声	$\displaystyle\frac{{{\rm{4}}.{\rm{07}} \times {\rm{1}}{{\rm{0}}^{ - {\rm{19}}}}}}{{{\rm{1}} + (\frac{f}{{14000}}{)^{1.84}}}}$	$\displaystyle\frac{{7.38 \times {\rm{1}}{{\rm{0}}^{ - {\rm{18}}}}}}{{{\rm{1}} + (\frac{f}{{990{\rm{0}}}}{)^{1.96}}}}$	$\displaystyle\frac{{1.32 \times {\rm{1}}{{\rm{0}}^{ - {\rm{17}}}}}}{{{\rm{1}} + (\frac{f}{{1560}}{)^{2.02}}}}$
低频噪声起源	1/f + g-r噪声	1/f + g-r噪声	1/f + g-r噪声	1/f 噪声	1/f 噪声	1/f 噪声

Table 1.

Extraction results of low-frequency noise using Eq. (4).

根据(4)式提取出的低频噪声参数

低频噪声类型	测试电流/mA
低频噪声类型	0.1	10	27	50	80	180
1/f噪声幅值	$B = {I^{3.834}}$	$B = {I^{7.370}}$	$B = {I^{8.285}}$	$B = {I^{_{^{^{_{9.436}}}}}}$	$B = {I^{_{^{10.4647}}}}$	$B = {I^{13.8273}}$
g-r噪声幅值	$C = {I^{^{_{4.0980}}}}$	$C = {I^{8.5660}}$	$C = I{}^{12.0212}$
g-r噪声时间常数	$\tau = {I^{0.9978}}$	$\tau = {I^{_{2.3969}}}$	$\tau = {I^{3.1520}}$

Table 2.

Exponent relationships between parameters of 1/f noise and g-r noise and measured currents.

低频1/f噪声和g-r噪声参数与电流之间的指数关系

Dang-Hui Wang, Tian-Han Xu. Low-frequency generation-recombination noise behaviors of blue/violet-light-emitting diode[J]. Acta Physica Sinica, 2019, 68(12): 128104-1

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