Solar Cell Using Hourglass-Shaped Silicon Nanowires for Increased Light-Trapping Path

Myunghae Seo; Sol Yoon; Hyeonsu Cho; Seungho Lee; Kihyun Kim; Byoung Don Kong; Meyya Meyyappan; Chang Ki Baek

doi:10.1109/JPHOTOV.2020.2964329

Solar Cell Using Hourglass-Shaped Silicon Nanowires for Increased Light-Trapping Path

Myunghae Seo
, Sol Yoon
, Hyeonsu Cho
, Seungho Lee
, Kihyun Kim
, Byoung Don Kong
, Meyya Meyyappan
, Chang Ki Baek^*

^*Corresponding author for this work

Division of Electronic Engineering

Pohang University of Science and Technology
NASA Ames Research Center

Research output: Contribution to journal › Journal article › peer-review

18 Scopus citations

Abstract

Silicon nanowires (SiNWs) are promising structures with excellent photovoltaic properties for low-cost, high-efficiency solar cells and have the potential to overcome the limits of bulk silicon solar cells. There is still a need to enhance light absorption in SiNWs without increasing the surface area. Here, we introduce a novel design, hourglass-shaped silicon nanowire (HG-SiNW) to significantly increase the light-Trapping path. Electrical and optical measurements show the superiority of HG-SiNW as an antireflective layer. In addition, whispering gallery mode identified by optical simulations accounts for the greatly improved absorption at the broadband solar spectrum. The HG-SiNW solar cells show an increase in short-circuit current (J_SC) and 1.85 times higher efficiency with only simple diameter variations.

Original language	English
Article number	8964577
Pages (from-to)	475-479
Number of pages	5
Journal	IEEE Journal of Photovoltaics
Volume	10
Issue number	2
DOIs	https://doi.org/10.1109/JPHOTOV.2020.2964329
State	Published - 2020.03

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

Antireflection
light absorption
photovoltaics (PVs)
silicon (Si) nanostructures
whispering gallery mode (WGM)

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10.1109/JPHOTOV.2020.2964329

Cite this

@article{716ad1c397a643ba9c0edaed58144918,

title = "Solar Cell Using Hourglass-Shaped Silicon Nanowires for Increased Light-Trapping Path",

abstract = "Silicon nanowires (SiNWs) are promising structures with excellent photovoltaic properties for low-cost, high-efficiency solar cells and have the potential to overcome the limits of bulk silicon solar cells. There is still a need to enhance light absorption in SiNWs without increasing the surface area. Here, we introduce a novel design, hourglass-shaped silicon nanowire (HG-SiNW) to significantly increase the light-Trapping path. Electrical and optical measurements show the superiority of HG-SiNW as an antireflective layer. In addition, whispering gallery mode identified by optical simulations accounts for the greatly improved absorption at the broadband solar spectrum. The HG-SiNW solar cells show an increase in short-circuit current (JSC) and 1.85 times higher efficiency with only simple diameter variations.",

keywords = "Antireflection, light absorption, photovoltaics (PVs), silicon (Si) nanostructures, whispering gallery mode (WGM)",

author = "Myunghae Seo and Sol Yoon and Hyeonsu Cho and Seungho Lee and Kihyun Kim and Kong, \{Byoung Don\} and Meyya Meyyappan and Baek, \{Chang Ki\}",

note = "Publisher Copyright: {\textcopyright} 2011-2012 IEEE.",

year = "2020",

month = mar,

doi = "10.1109/JPHOTOV.2020.2964329",

language = "English",

volume = "10",

pages = "475--479",

journal = "IEEE Journal of Photovoltaics",

issn = "2156-3381",

number = "2",

}

TY - JOUR

T1 - Solar Cell Using Hourglass-Shaped Silicon Nanowires for Increased Light-Trapping Path

AU - Seo, Myunghae

AU - Yoon, Sol

AU - Cho, Hyeonsu

AU - Lee, Seungho

AU - Kim, Kihyun

AU - Kong, Byoung Don

AU - Meyyappan, Meyya

AU - Baek, Chang Ki

PY - 2020/3

Y1 - 2020/3

N2 - Silicon nanowires (SiNWs) are promising structures with excellent photovoltaic properties for low-cost, high-efficiency solar cells and have the potential to overcome the limits of bulk silicon solar cells. There is still a need to enhance light absorption in SiNWs without increasing the surface area. Here, we introduce a novel design, hourglass-shaped silicon nanowire (HG-SiNW) to significantly increase the light-Trapping path. Electrical and optical measurements show the superiority of HG-SiNW as an antireflective layer. In addition, whispering gallery mode identified by optical simulations accounts for the greatly improved absorption at the broadband solar spectrum. The HG-SiNW solar cells show an increase in short-circuit current (JSC) and 1.85 times higher efficiency with only simple diameter variations.

AB - Silicon nanowires (SiNWs) are promising structures with excellent photovoltaic properties for low-cost, high-efficiency solar cells and have the potential to overcome the limits of bulk silicon solar cells. There is still a need to enhance light absorption in SiNWs without increasing the surface area. Here, we introduce a novel design, hourglass-shaped silicon nanowire (HG-SiNW) to significantly increase the light-Trapping path. Electrical and optical measurements show the superiority of HG-SiNW as an antireflective layer. In addition, whispering gallery mode identified by optical simulations accounts for the greatly improved absorption at the broadband solar spectrum. The HG-SiNW solar cells show an increase in short-circuit current (JSC) and 1.85 times higher efficiency with only simple diameter variations.

KW - Antireflection

KW - light absorption

KW - photovoltaics (PVs)

KW - silicon (Si) nanostructures

KW - whispering gallery mode (WGM)

UR - https://www.scopus.com/pages/publications/85080910833

U2 - 10.1109/JPHOTOV.2020.2964329

DO - 10.1109/JPHOTOV.2020.2964329

M3 - Journal article

AN - SCOPUS:85080910833

SN - 2156-3381

VL - 10

SP - 475

EP - 479

JO - IEEE Journal of Photovoltaics

JF - IEEE Journal of Photovoltaics

IS - 2

M1 - 8964577

ER -

Solar Cell Using Hourglass-Shaped Silicon Nanowires for Increased Light-Trapping Path

Abstract

UN SDGs

Keywords

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