测量LED在低电流下3dB的电致发光频率

2023 IX International Conference on Information Technology and Nanotechnology (ITNT) Pub Date : 2023-04-17 DOI:10.1109/ITNT57377.2023.10139230

V. Sergeev, I. Frolov, O. Radaev

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引用次数: 0

摘要

给出了在低激励水平下，用标准方法测量LED电致发光3dB频率的误差分析和估计。结果表明，在小电流(100 μA以下)下测量LED发光功率的可变分量时，由于LED瓦安特性的非线性和测量电路加性噪声的影响，误差占主导地位。结果表明，存在一个交变幅值，在该值下，光信号在低电流下的总测量误差达到最小值。

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Measurement of the LED electroluminescence 3dB frequency at low currents

An analysis and estimation of measuring errors the 3dB frequency of the LED electroluminescence by the standard method at low excitation levels are presented. It is noted that when measuring the variable component of the LED emission power at low currents (up to 100 μA), errors predominate due to the nonlinearity of the LED watt-ampere characteristic and the influence of additive noise of the measuring circuits. It is shown that there is a value of the alternating current amplitude at which the total measurement error of the optical signal at low currents takes on a minimum value.

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2023 IX International Conference on Information Technology and Nanotechnology (ITNT)

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