Coated si microwire array solar cells for better light trapping

Eunsongyi Lee; Minji Gwon; Yunae Cho; Dong Wook Kim

doi:10.1117/12.2023456

Coated si microwire array solar cells for better light trapping

Eunsongyi Lee
, Minji Gwon
, Yunae Cho
, Dong Wook Kim

Department of Physics

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

We investigated optical properties of planar Si wafers and Si microwire (MW) arrays with and without ZnO thin films using the finite-difference time-domain (FDTD) method. Reflectance of the MW array (diameter: 4 μm and period: 12 μm) was smaller than that of the planar wafer in the wavelength range from 400 to 1100 nm, which could be originated from antireflection effects due to low optical density and guided-mode-assisted field enhancement. The reflectance of ZnO (thickness: 50 and 80 nm)-coated MW array was drastically reduced compared with the bare array but somewhat larger than that of the coated planar wafer. This could be attributed to less-confined guided modes in the wires, which was supported by the field distribution simulation results. Our results provide some insights into possible roles of transparent conducting layers on MW arrays for photovoltaic applications.

Original language	English
Title of host publication	Next Generation (Nano) Photonic and Cell Technologies for Solar Energy Conversion IV
DOIs	https://doi.org/10.1117/12.2023456
State	Published - 2013
Event	Next Generation (Nano) Photonic and Cell Technologies for Solar Energy Conversion IV - San Diego, CA, United States Duration: 25 Aug 2013 → 27 Aug 2013

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	8824
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Conference

Conference	Next Generation (Nano) Photonic and Cell Technologies for Solar Energy Conversion IV
Country/Territory	United States
City	San Diego, CA
Period	25/08/13 → 27/08/13

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Antireflection
Silicon microwire
Solar cell

Access to Document

10.1117/12.2023456

Cite this

@inproceedings{1d7f1cae805c41a49edd118534d736f4,

title = "Coated si microwire array solar cells for better light trapping",

abstract = "We investigated optical properties of planar Si wafers and Si microwire (MW) arrays with and without ZnO thin films using the finite-difference time-domain (FDTD) method. Reflectance of the MW array (diameter: 4 μm and period: 12 μm) was smaller than that of the planar wafer in the wavelength range from 400 to 1100 nm, which could be originated from antireflection effects due to low optical density and guided-mode-assisted field enhancement. The reflectance of ZnO (thickness: 50 and 80 nm)-coated MW array was drastically reduced compared with the bare array but somewhat larger than that of the coated planar wafer. This could be attributed to less-confined guided modes in the wires, which was supported by the field distribution simulation results. Our results provide some insights into possible roles of transparent conducting layers on MW arrays for photovoltaic applications.",

keywords = "Antireflection, Silicon microwire, Solar cell",

author = "Eunsongyi Lee and Minji Gwon and Yunae Cho and Kim, \{Dong Wook\}",

year = "2013",

doi = "10.1117/12.2023456",

language = "English",

isbn = "9780819496744",

series = "Proceedings of SPIE - The International Society for Optical Engineering",

booktitle = "Next Generation (Nano) Photonic and Cell Technologies for Solar Energy Conversion IV",

note = "Next Generation (Nano) Photonic and Cell Technologies for Solar Energy Conversion IV ; Conference date: 25-08-2013 Through 27-08-2013",

}

Lee, E, Gwon, M, Cho, Y & Kim, DW 2013, Coated si microwire array solar cells for better light trapping. in Next Generation (Nano) Photonic and Cell Technologies for Solar Energy Conversion IV., 882411, Proceedings of SPIE - The International Society for Optical Engineering, vol. 8824, Next Generation (Nano) Photonic and Cell Technologies for Solar Energy Conversion IV, San Diego, CA, United States, 25/08/13. https://doi.org/10.1117/12.2023456

Coated si microwire array solar cells for better light trapping. / Lee, Eunsongyi; Gwon, Minji; Cho, Yunae et al.
Next Generation (Nano) Photonic and Cell Technologies for Solar Energy Conversion IV. 2013. 882411 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 8824).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Coated si microwire array solar cells for better light trapping

AU - Lee, Eunsongyi

AU - Gwon, Minji

AU - Cho, Yunae

AU - Kim, Dong Wook

PY - 2013

Y1 - 2013

N2 - We investigated optical properties of planar Si wafers and Si microwire (MW) arrays with and without ZnO thin films using the finite-difference time-domain (FDTD) method. Reflectance of the MW array (diameter: 4 μm and period: 12 μm) was smaller than that of the planar wafer in the wavelength range from 400 to 1100 nm, which could be originated from antireflection effects due to low optical density and guided-mode-assisted field enhancement. The reflectance of ZnO (thickness: 50 and 80 nm)-coated MW array was drastically reduced compared with the bare array but somewhat larger than that of the coated planar wafer. This could be attributed to less-confined guided modes in the wires, which was supported by the field distribution simulation results. Our results provide some insights into possible roles of transparent conducting layers on MW arrays for photovoltaic applications.

AB - We investigated optical properties of planar Si wafers and Si microwire (MW) arrays with and without ZnO thin films using the finite-difference time-domain (FDTD) method. Reflectance of the MW array (diameter: 4 μm and period: 12 μm) was smaller than that of the planar wafer in the wavelength range from 400 to 1100 nm, which could be originated from antireflection effects due to low optical density and guided-mode-assisted field enhancement. The reflectance of ZnO (thickness: 50 and 80 nm)-coated MW array was drastically reduced compared with the bare array but somewhat larger than that of the coated planar wafer. This could be attributed to less-confined guided modes in the wires, which was supported by the field distribution simulation results. Our results provide some insights into possible roles of transparent conducting layers on MW arrays for photovoltaic applications.

KW - Antireflection

KW - Silicon microwire

KW - Solar cell

UR - https://www.scopus.com/pages/publications/84886651717

U2 - 10.1117/12.2023456

DO - 10.1117/12.2023456

M3 - Conference contribution

AN - SCOPUS:84886651717

SN - 9780819496744

T3 - Proceedings of SPIE - The International Society for Optical Engineering

BT - Next Generation (Nano) Photonic and Cell Technologies for Solar Energy Conversion IV

T2 - Next Generation (Nano) Photonic and Cell Technologies for Solar Energy Conversion IV

Y2 - 25 August 2013 through 27 August 2013

ER -

Coated si microwire array solar cells for better light trapping

Abstract

Publication series

Conference

UN SDGs

Keywords

Access to Document

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Cite this