Excellent light-capture capability of trilobal SiNW for ultra-high JSC in single-nanowire solar cells

Zhongliang Gao; Guilu Lin; Yupeng Zheng; Na Sang; Yingfeng Li; Lei Chen; Meicheng Li

doi:10.1364/PRJ.385867

Journals >Photonics Research >Volume 8 >Issue 6 >Page 995 > Article

Photonics Research
Vol. 8, Issue 6, 995 (2020)

Excellent light-capture capability of trilobal SiNW for ultra-high J_SC in single-nanowire solar cells

Zhongliang Gao¹, Guilu Lin², Yupeng Zheng¹, Na Sang², Yingfeng Li¹, Lei Chen², and Meicheng Li^1、*

Author Affiliations

¹State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, School of Renewable Energy, North China Electric Power University, Beijing 102206, China

²School of Mathematics and Physics, North China Electric Power University, Beijing 102206, China

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DOI: 10.1364/PRJ.385867 Cite this Article Set citation alerts

Zhongliang Gao, Guilu Lin, Yupeng Zheng, Na Sang, Yingfeng Li, Lei Chen, Meicheng Li. Excellent light-capture capability of trilobal SiNW for ultra-high J_SC in single-nanowire solar cells[J]. Photonics Research, 2020, 8(6): 995 Copy Citation Text

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Schematic diagram of trilobal SiNWs. (a) Assembly process, geometric relationship of top view, and (b) 3D view and top view with different equivalent scales.

Fig. 1. Schematic diagram of trilobal SiNWs. (a) Assembly process, geometric relationship of top view, and (b) 3D view and top view with different equivalent scales.

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(a) Absorption efficiency, (b) electric field distribution in yz plane, (c) light-absorption spectral power under AM 1.5 G solar spectrum, and (d) total absorption and obtainable JSC with cylindrical and trilobal SiNWs with the same cross section of 3631 nm2 and height of 0.3 μm.

Fig. 2. (a) Absorption efficiency, (b) electric field distribution in yz plane, (c) light-absorption spectral power under AM 1.5 G solar spectrum, and (d) total absorption and obtainable JSC with cylindrical and trilobal SiNWs with the same cross section of 3631 nm2 and height of 0.3 μm.

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Fig. 3. Absorption efficiency of cylindrical and trilobal SiNWs with different (a) cross sections and (b) heights. The change of the cross section is through changing the diameter of the cylindrical SiNW and the width of the blade of the trilobal SiNW. Total absorption and obtainable JSC of cylindrical and trilobal SiNWs with different (c) cross sections and (b) heights.

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Fig. 4. Absorption efficiency of (a) cylindrical and (b) trilobal SiNWs with different incident angles, (c) diagram of two kinds of SiNWs with different incident angles, and (d) total absorption and obtainable JSC with different incident angles.

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Fig. 5. Absorption efficiency (σabs/σgeom) spectra of trilobal SiNW with different polarization directions; the illustration shows the polarization directions.

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Serial Number	Trilobal SiNW		Cylindrical SiNW
Serial Number	Width^a(nm)	Height (μm)	Diameter^a(nm)	Height (μm)	Cross Section^a( ${nm}^{2}$ )
1	10	0.3	62	0.3	3019
2	15	0.3	68	0.3	3631
3	20	0.3	74	0.3	4300
4	25	0.3	80	0.3	5026
5	15	0.1	68	0.1	3631
6	15	0.3	68	0.3	3631
7	15	0.5	68	0.5	3631
8	15	0.7	68	0.7	3631

Table 1. Geometric Parameters of Trilobal and Cylindrical SiNWs

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Serial Number	Trilobal SiNW		Cylindrical SiNW
Serial Number	Absorption Intensity^a( $W \cdot m^{- 2}$ )	Obtainable $J_{SC}$ ^a( $mA \cdot {cm}^{- 2}$ )	Absorption Intensity^a( $W \cdot m^{- 2}$ )	Obtainable $J_{SC}$ ^a( $mA \cdot {cm}^{- 2}$ )
1	7733	295	6152	252
2	7573	299	5945	242
3	7591	302	5402	219
4	6989	282	5207	210
5	2786	103	2475	96
6	7573	299	5944	242
7	11,846	476	8906	367
8	15,969	647	11,571	481