Multi-Field Coupling Characteristics of Laser Wireless Power Transmission Receiving End Under Atmospheric Influence

Fig. 8. Comparison of experimental data and fitting data of I-V curves under different illumination conditions. (a) Comparison of I-V curves between experiment data and fitting data; (b) comparison of the correlation between experiment current and the fitting current

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Fig. 9. Relationship between laser transmission efficiency in the atmosphere and distance

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Fig. 10. Turbulent phase screen and grayscale image at $C_{n}^{2} = 2 \times 10^{- 13} m^{- 2 / 3}$ . (a) Phase screen; (b) grayscale image

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Fig. 11. Turbulent phase screen and grayscale image at $C_{n}^{2} = 2 \times 10^{- 14} m^{- 2 / 3}$ . (a) Phase screen; (b) grayscale image

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Fig. 12. Turbulent phase screen and grayscale image at $C_{n}^{2} = 2 \times 10^{- 15} m^{- 2 / 3}$ . (a) Phase screen; (b) grayscale image

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Fig. 13. Light intensity distribution and plane projection under different structural constants of atmospheric turbulence. (a) $C_{n}^{2} = 2 \times 10^{- 15} m^{- 2 / 3}$ ; (b) $C_{n}^{2} = 2 \times 10^{- 14} m^{- 2 / 3}$ ; (c) $C_{n}^{2} = 2 \times 10^{- 13} m^{- 2 / 3}$

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Fig. 14. Electric potential distribution of photovoltaic cells under different structural constants of atmospheric turbulence. (a) $C_{n}^{2} = 2 \times 10^{- 15} m^{- 2 / 3}$ ; (b) $C_{n}^{2} = 2 \times 10^{- 14} m^{- 2 / 3}$ ; (c) $C_{n}^{2} = 2 \times 10^{- 13} m^{- 2 / 3}$

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Fig. 15. Current density distribution of photovoltaic cells under different structural constants of atmospheric turbulence. (a) $C_{n}^{2} = 2 \times 10^{- 15} m^{- 2 / 3}$ ; (b) $C_{n}^{2} = 2 \times 10^{- 14} m^{- 2 / 3}$ ; (c) $C_{n}^{2} = 2 \times 10^{- 13} m^{- 2 / 3}$

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Fig. 16. I-V and P-V characteristics curves of photovoltaic cells under different structural constants of atmospheric turbulence. (a) I-V curves; (b) P-V curves

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Fig. 17. Surface temperature distribution of photovoltaic cells under different structural constants of atmospheric turbulence. (a) $C_{n}^{2} = 2 \times 10^{- 15} m^{- 2 / 3}$ ; (b) $C_{n}^{2} = 2 \times 10^{- 14} m^{- 2 / 3}$ ; (c) $C_{n}^{2} = 2 \times 10^{- 13} m^{- 2 / 3}$

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Table 1. Thermophysical parameters of photovoltaic cells
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Table 1. Thermophysical parameters of photovoltaic cells
Component Density $ρ$ /（kg $\cdot$ m^-3） Thermal conductivityk /（W $\cdot$ m^-1 $\cdot$ K^-1） Heat capacityc /（J $\cdot$ mol^-1 $\cdot$ K^-1）
Wafer 2329 131 700
Busbar 8960 400 385
Finger 8960 400 385

Table 2. Electrical boundary parameters for photovoltaic cells

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Table 2. Electrical boundary parameters for photovoltaic cells

Region	Corresponding position serial number	Boundary condition
External edge	1	Electrical insulation, no current flow, nJ=0
Internal edge	2	No current generation between illumination region and dark region, n(J₁-J₂)=0
Busbar and finger	3, 5	External potential at the borders of busbar, V=V₀
Dark region	Covered area of 3 and 5	$Q_{d 1}$
Illumination region	Covered area of 4	$Q_{e 1}$

Table 3. Geometry and conductivity of photovoltaic cells
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Table 3. Geometry and conductivity of photovoltaic cells
Component Material Width /mm Height /mm Thickness /mm Electrical conductivity /（S·m^-1）
Wafer Silicon 45 45 35 0.0167
Busbar Copper 45 2 35 952
Finger Copper 0.1 21.5 35 13.33

Table 4. Regression parameters
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Table 4. Regression parameters
Parameter C₁ /（A·W^-1） C₂ /（A·m^-2·K^-3） C₃ /（A·m^-2·V^-1） R_s /Ω $n$
Value 0.001239 -9.396×10⁴ 0.011394 0.0244 1.35

Table 5. Comparison of output characteristics of P-V under different structural constants of atmospheric turbulence

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Table 5. Comparison of output characteristics of P-V under different structural constants of atmospheric turbulence

Structure constant of atmosphericturbulence $C_{n}^{2} / (m^{- 2 / 3})$	Open circuitvoltage $V_{o c} / m V$	Short-circuitcurrent $I_{s c} / m A$	Photoelectric conversion efficiency $η$ /%
2×10^-15	557	179.36	15.85
2×10^-14	537	77.32	14.82
2×10^-13	529	56.18	14.34

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Yichao Hou, Xianlong Meng, Pu Zhang, Aozhou Zheng, Cunliang Liu. Multi-Field Coupling Characteristics of Laser Wireless Power Transmission Receiving End Under Atmospheric Influence[J]. Acta Optica Sinica, 2024, 44(12): 1201015

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