Spectral splitting for an InGaP/GaAs parallel junction solar cell

Muhammed Necip Erim; Nur Erim; Hamza Kurt

doi:10.1364/AO.58.004265

Applied Optics
Vol. 58,
Issue 16,
pp. 4265-4270
(2019)
•https://doi.org/10.1364/AO.58.004265

Spectral splitting for an InGaP/GaAs parallel junction solar cell

Muhammed Necip Erim, Nur Erim, and Hamza Kurt

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Muhammed Necip Erim, Nur Erim, and Hamza Kurt, "Spectral splitting for an InGaP/GaAs parallel junction solar cell," Appl. Opt. 58, 4265-4270 (2019)

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Related Topics
Table of Contents Category
- Diffraction and Gratings
Optics & Photonics Topics
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The topics in this list come from the Optics and Photonics Topics applied to this article.

About this Article
History
- Original Manuscript: February 26, 2019
- Revised Manuscript: April 26, 2019
- Manuscript Accepted: April 26, 2019
- Published: May 23, 2019

Abstract

In this paper, a design of a diffractive optical element to split the solar spectrum into two separate parts for a laterally arrayed InGaP/GaAs solar cell is presented. Optical simulation is done by using the three-dimensional finite-difference time-domain method and the results are demonstrated to evaluate the optical performance of the designed structure. Anti-reflection coating for the designed splitter is also put forth. In addition to the optical analysis, electrical simulations are performed and current density-voltage and power density-voltage curves are presented in order to explain the electrical performance of the InGaP/GaAs solar cell by implementing the designed spectrum splitter. The results of the electrical simulations show that the designed InGaP/GaAs solar cell’s best efficiency is 34.7% under unconcentrated sunlight. Further improvement is feasible if the parameters of the spectral splitting structure are optimized by the incorporation of non-intuitive optimization algorithms. Lastly, light trapping strategies can also be considered to enhance the efficiency of the solar cells.

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Parameters	${In}_{49} {Ga}_{51} P$	Reference	GaAs	Reference
E	11.8	[25]	13.1	[26]
$n_{i}$ ( ${cm}^{- 3}$ )	$6.43 \times 10^{3}$	–	$4.56 \times 10^{5}$	–
$N_{A}$ ( ${cm}^{- 3}$ )	$10^{17}$	–	$10^{17}$	–
$N_{D}$ ( ${cm}^{- 3}$ )	$2 \times 10^{17}$	–	$2 \times 10^{17}$	–
$E_{g}$ (eV)	1.85	[27]	1.424	[26]
$N_{C}$ ( ${cm}^{- 3}$ )	$1.9 \times 10^{18}$	–	$4.7 \times 10^{17}$	[26]
$N_{V}$ ( ${cm}^{- 3}$ )	$2.3 \times 10^{20}$	–	$7 \times 10^{17}$	[26]
$m_{e}^{*}$ (g)	$2.59 \times 10^{- 35}$	[25]	–	–
$m_{e}^{*}$ (g)	$6.34 \times 10^{- 34}$	[25]	–	–

Parameters	InGaP Solar Cell + Splitter + ARC Layer	GaAs Solar Cell + Splitter + ARC Layer
$V_{OC}$ (V)	1.41	0.95
$J_{SC}$ ( $mA / {cm}^{2}$ )	12.51	22.84
$P_{\max}$ ( $mW / {cm}^{2}$ )	15.86	18.86
FF	0.90	0.87
Efficiency (%)	15.9	18.9
Total efficiency (%)	34.7

Parameters	${In}_{49} {Ga}_{51} P$	Reference	GaAs	Reference
E	11.8	[25]	13.1	[26]
$n_{i}$ ( ${cm}^{- 3}$ )	$6.43 \times 10^{3}$	–	$4.56 \times 10^{5}$	–
$N_{A}$ ( ${cm}^{- 3}$ )	$10^{17}$	–	$10^{17}$	–
$N_{D}$ ( ${cm}^{- 3}$ )	$2 \times 10^{17}$	–	$2 \times 10^{17}$	–
$E_{g}$ (eV)	1.85	[27]	1.424	[26]
$N_{C}$ ( ${cm}^{- 3}$ )	$1.9 \times 10^{18}$	–	$4.7 \times 10^{17}$	[26]
$N_{V}$ ( ${cm}^{- 3}$ )	$2.3 \times 10^{20}$	–	$7 \times 10^{17}$	[26]
$m_{e}^{*}$ (g)	$2.59 \times 10^{- 35}$	[25]	–	–
$m_{e}^{*}$ (g)	$6.34 \times 10^{- 34}$	[25]	–	–

Parameters	InGaP Solar Cell + Splitter + ARC Layer	GaAs Solar Cell + Splitter + ARC Layer
$V_{OC}$ (V)	1.41	0.95
$J_{SC}$ ( $mA / {cm}^{2}$ )	12.51	22.84
$P_{\max}$ ( $mW / {cm}^{2}$ )	15.86	18.86
FF	0.90	0.87
Efficiency (%)	15.9	18.9
Total efficiency (%)	34.7

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Applied Optics