Comparative experimental and simulative investigations of radial p-n junction Si microwire array solar cells

Eunsongyi Lee; Yoonjung Kim; Minji Gwon; Dong Wook Kim; Seong Ho Baek; Jae Hyun Kim

doi:10.1016/j.solmat.2012.04.023

Comparative experimental and simulative investigations of radial p-n junction Si microwire array solar cells

Eunsongyi Lee, Yoonjung Kim, Minji Gwon, Dong Wook Kim, Seong Ho Baek, Jae Hyun Kim

Department of Physics

Research output: Contribution to journal › Article › peer-review

22 Scopus citations

Abstract

We carried out experimental and simulative investigations of the electrical and optical characteristics of radial p-n junction Si microwire (MW) array solar cells (diameter: 4 μm, height: 12 μm, and period: 12 μm) prepared by electroless etching (EE) methods. Due to its unique geometry, the MW array had an enlarged junction area, enabling efficient carrier collection and optical reflectance in the wavelength range from 400 to 1000 nm, which is lower than that of its planar counterpart. Despite these advantages, the energy conversion efficiency (CE) of the MW array solar cell (3.2%) was lower than that of a planar solar cell (4.2%). This comparative study clearly reveals the inherent potential of MW-based solar cells and the importance of extrinsic trap state control to realize low-cost, high-efficiency devices.

Original language	English
Pages (from-to)	93-97
Number of pages	5
Journal	Solar Energy Materials and Solar Cells
Volume	103
DOIs	https://doi.org/10.1016/j.solmat.2012.04.023
State	Published - 2012

Bibliographical note

Funding Information:
This work was supported by the Pioneer Research Center Program ( 2010-0002231 ) and the Quantum Metamaterials Research Center ( 2009-0063324 ) through the National Research Foundation of Korea Grant funded by the Ministry of Education, Science and Technology. E.L. and D.-W.K were also supported by the New and Renewable Energy Technology Development Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant ( KETEP-20113030010110 ) funded by the Korean Government Ministry of Knowledge Economy.

Keywords

Electroless etching
Radial p-n junction
Silicon microwire
Solar cells

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10.1016/j.solmat.2012.04.023

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title = "Comparative experimental and simulative investigations of radial p-n junction Si microwire array solar cells",

abstract = "We carried out experimental and simulative investigations of the electrical and optical characteristics of radial p-n junction Si microwire (MW) array solar cells (diameter: 4 μm, height: 12 μm, and period: 12 μm) prepared by electroless etching (EE) methods. Due to its unique geometry, the MW array had an enlarged junction area, enabling efficient carrier collection and optical reflectance in the wavelength range from 400 to 1000 nm, which is lower than that of its planar counterpart. Despite these advantages, the energy conversion efficiency (CE) of the MW array solar cell (3.2%) was lower than that of a planar solar cell (4.2%). This comparative study clearly reveals the inherent potential of MW-based solar cells and the importance of extrinsic trap state control to realize low-cost, high-efficiency devices.",

keywords = "Electroless etching, Radial p-n junction, Silicon microwire, Solar cells",

author = "Eunsongyi Lee and Yoonjung Kim and Minji Gwon and Kim, {Dong Wook} and Baek, {Seong Ho} and Kim, {Jae Hyun}",

note = "Funding Information: This work was supported by the Pioneer Research Center Program ( 2010-0002231 ) and the Quantum Metamaterials Research Center ( 2009-0063324 ) through the National Research Foundation of Korea Grant funded by the Ministry of Education, Science and Technology. E.L. and D.-W.K were also supported by the New and Renewable Energy Technology Development Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant ( KETEP-20113030010110 ) funded by the Korean Government Ministry of Knowledge Economy.",

year = "2012",

doi = "10.1016/j.solmat.2012.04.023",

language = "English",

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T1 - Comparative experimental and simulative investigations of radial p-n junction Si microwire array solar cells

AU - Lee, Eunsongyi

AU - Kim, Yoonjung

AU - Gwon, Minji

AU - Kim, Dong Wook

AU - Baek, Seong Ho

AU - Kim, Jae Hyun

N1 - Funding Information: This work was supported by the Pioneer Research Center Program ( 2010-0002231 ) and the Quantum Metamaterials Research Center ( 2009-0063324 ) through the National Research Foundation of Korea Grant funded by the Ministry of Education, Science and Technology. E.L. and D.-W.K were also supported by the New and Renewable Energy Technology Development Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant ( KETEP-20113030010110 ) funded by the Korean Government Ministry of Knowledge Economy.

PY - 2012

Y1 - 2012

N2 - We carried out experimental and simulative investigations of the electrical and optical characteristics of radial p-n junction Si microwire (MW) array solar cells (diameter: 4 μm, height: 12 μm, and period: 12 μm) prepared by electroless etching (EE) methods. Due to its unique geometry, the MW array had an enlarged junction area, enabling efficient carrier collection and optical reflectance in the wavelength range from 400 to 1000 nm, which is lower than that of its planar counterpart. Despite these advantages, the energy conversion efficiency (CE) of the MW array solar cell (3.2%) was lower than that of a planar solar cell (4.2%). This comparative study clearly reveals the inherent potential of MW-based solar cells and the importance of extrinsic trap state control to realize low-cost, high-efficiency devices.

AB - We carried out experimental and simulative investigations of the electrical and optical characteristics of radial p-n junction Si microwire (MW) array solar cells (diameter: 4 μm, height: 12 μm, and period: 12 μm) prepared by electroless etching (EE) methods. Due to its unique geometry, the MW array had an enlarged junction area, enabling efficient carrier collection and optical reflectance in the wavelength range from 400 to 1000 nm, which is lower than that of its planar counterpart. Despite these advantages, the energy conversion efficiency (CE) of the MW array solar cell (3.2%) was lower than that of a planar solar cell (4.2%). This comparative study clearly reveals the inherent potential of MW-based solar cells and the importance of extrinsic trap state control to realize low-cost, high-efficiency devices.

KW - Electroless etching

KW - Radial p-n junction

KW - Silicon microwire

KW - Solar cells

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DO - 10.1016/j.solmat.2012.04.023

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SN - 0927-0248

VL - 103

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JO - Solar Energy Materials and Solar Cells

JF - Solar Energy Materials and Solar Cells

ER -

Comparative experimental and simulative investigations of radial p-n junction Si microwire array solar cells

Abstract

Bibliographical note

Keywords

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