Quantum Conversion Efficiency Measurement of Organic-Inorganic Hybrid Perovskite Light-Emitting Diode Based on Integrating Sphere System

Fig. 3. Relevant data about PeLED. (a) PeLED structure; (b) electroluminescence spectrum (illustration shows that brightness of 0.7cm×0.3cm PeLED under different voltages)

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Fig. 4. Performance characterization of PeLED. (a) Curves of current density and brightness under different voltage; (b) EQE under different bias voltages; (c) relationship between current efficiency and voltage; (d) relationship between center wavelength and voltage

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Table 1. Comparison of collected wavelengths and standard wavelengths
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Table 1. Comparison of collected wavelengths and standard wavelengths
Times λ_i/nm λ_s/nm
1 524
2 524 530
3 524

Table 2. Comparison of collected brightness and standard brightness
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Table 2. Comparison of collected brightness and standard brightness
Times L_i/(cd·m^-2) L_s/(cd·m^-2)
1 18464.53
2 18500.11 20770.14
3 18497.52

Table 3. Comparison of PeLED test datas and errors

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Table 3. Comparison of PeLED test datas and errors

Simple	Voltage/V	EQE/%				Error/%	L/(cd·m^-2)				Error/%
Simple	Voltage/V	reference		measurement		Error/%	reference		measurement		Error/%
1	2.2	0.0219	0.0230		5.9		1.000	1.089		8.9
1	3.2	0.0851	0.0892		4.8		388.086	403.264		3.9
2	2.4	0.0198	0.0211		6.0		1.000	1.077		7.7
2	3.4	0.0521	0.0550		5.2		258.790	269.340		4.1

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Li Wan, Feng Zhou, Su Hang, Zhang Lilai, Suo Xinlei, Li Guolong. Quantum Conversion Efficiency Measurement of Organic-Inorganic Hybrid Perovskite Light-Emitting Diode Based on Integrating Sphere System[J]. Laser & Optoelectronics Progress, 2020, 57(21): 212201

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