Damage characteristics of a triple-junction GaAs cell with a subwavelength structured antireflective film

Lei Qi; Yali Liu; Hao Jing; Xiaomin Yang; Rongzhu Zhang

doi:10.1364/JOSAB.438958

Journal of the Optical Society of America B
Vol. 38,
Issue 11,
pp. 3346-3352
(2021)
•https://doi.org/10.1364/JOSAB.438958

Damage characteristics of a triple-junction GaAs cell with a subwavelength structured antireflective film

Lei Qi, Yali Liu, Hao Jing, Xiaomin Yang, and Rongzhu Zhang

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Lei Qi, Yali Liu, Hao Jing, Xiaomin Yang, and Rongzhu Zhang, "Damage characteristics of a triple-junction GaAs cell with a subwavelength structured antireflective film," J. Opt. Soc. Am. B 38, 3346-3352 (2021)

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Abstract

A theoretical model of temperature and stress damage of a triple-junction GaAs solar cell with a conical subwavelength structure antireflection film is proposed to analyze the influence of subwavelength structure on damage characteristics. The distribution of temperature and stress under different cone structure parameters are calculated. Results show that the subwavelength structure will significantly modulate the light field, temperature field, and stress field inside the solar cell. Under the simultaneous influence of reflectivity and conical structure modulation, the melting damage and stress damage thresholds reach the minimum values of ${2.485} \times {{10}^7}$ and ${0.49} \times {{10}^7}\;{\rm W}/{\rm cm}^2$ when the cone height and bottom diameter are 500 and 750 nm, respectively.

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Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request.

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Material	$ρ$ ( $k g \cdot m^{- 3}$ )	$c$ ( $J \cdot {k g}^{- 1} \cdot K^{- 1}$ )	$K$ ( $W \cdot {c m}^{- 1} \cdot K^{- 1}$ )	$v$	$E$ (Pa)	$γ$ ( $K^{- 1}$ )	$n$
SiNx	3120	710	55	0.26	$3.07 \times 10^{10}$	$3.2 \times 10^{- 6}$	1.85
${G a I n P}_{2}$	4475	370	5	0.335	$8.2 \times 10^{10}$	$5.3 \times 10^{- 6}$	3.2
GaAs	$5336 - 0.0337 T$	$303 + 15 \times (T / 300)$	$42.5 \times (300 / T)^{1.1}$	0.31	$8.59 \times 10^{10}$	$6.4 \times 10^{- 6}$	3.45
Ge	$5343 - 0.066 T$	$303 + 0.0613 T$	$60 \times (300 / T)$	0.26	$10.3 \times 10^{10}$	$5.6 \times 10^{- 6}$	4.65-i0.3

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Journal of the Optical Society of America B