Broadband light-trapping enhancement in an ultrathin film a-si absorber using whispering gallery modes and guided wave modes with dielectric surface-textured structures

Gumin Kang; Haesung Park; Dongheok Shin; Seunghwa Baek; Minjung Choi; Dai Hyuk Yu; Kyoungsik Kim; Willie J. Padilla

doi:10.1002/adma.201204596

Broadband light-trapping enhancement in an ultrathin film a-si absorber using whispering gallery modes and guided wave modes with dielectric surface-textured structures

Gumin Kang, Haesung Park, Dongheok Shin, Seunghwa Baek, Minjung Choi, Dai Hyuk Yu, Kyoungsik Kim, Willie J. Padilla

Department of Mechanical Engineering

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

61 Citations (Scopus)

Abstract

An embedded nanosphere dielectric structure on an a-Si ultrathin film improves weighted absorption from 23.8% to 39.9%. The PMMA embedding layer offers a guided wave mode as well as mechanical robustness, in addition to the resonant whispering gallery modes coupling. Broadband light-trapping enhancements are observed by dielectric surface textured structures of hemispheres, nanocones, nanospheres, or embedded nanospheres.

Original language	English
Pages (from-to)	2617-2623
Number of pages	7
Journal	Advanced Materials
Volume	25
Issue number	18
DOIs	https://doi.org/10.1002/adma.201204596
Publication status	Published - 2013 May 14

All Science Journal Classification (ASJC) codes

Materials Science(all)
Mechanics of Materials
Mechanical Engineering

Access to Document

10.1002/adma.201204596

Cite this

@article{0d1d96b4b5284df281f287d2094668d6,

title = "Broadband light-trapping enhancement in an ultrathin film a-si absorber using whispering gallery modes and guided wave modes with dielectric surface-textured structures",

abstract = "An embedded nanosphere dielectric structure on an a-Si ultrathin film improves weighted absorption from 23.8% to 39.9%. The PMMA embedding layer offers a guided wave mode as well as mechanical robustness, in addition to the resonant whispering gallery modes coupling. Broadband light-trapping enhancements are observed by dielectric surface textured structures of hemispheres, nanocones, nanospheres, or embedded nanospheres.",

author = "Gumin Kang and Haesung Park and Dongheok Shin and Seunghwa Baek and Minjung Choi and Yu, {Dai Hyuk} and Kyoungsik Kim and Padilla, {Willie J.}",

year = "2013",

month = may,

day = "14",

doi = "10.1002/adma.201204596",

language = "English",

volume = "25",

pages = "2617--2623",

journal = "Advanced Materials",

issn = "0935-9648",

publisher = "Wiley-VCH Verlag",

number = "18",

}

TY - JOUR

T1 - Broadband light-trapping enhancement in an ultrathin film a-si absorber using whispering gallery modes and guided wave modes with dielectric surface-textured structures

AU - Kang, Gumin

AU - Park, Haesung

AU - Shin, Dongheok

AU - Baek, Seunghwa

AU - Choi, Minjung

AU - Yu, Dai Hyuk

AU - Kim, Kyoungsik

AU - Padilla, Willie J.

PY - 2013/5/14

Y1 - 2013/5/14

N2 - An embedded nanosphere dielectric structure on an a-Si ultrathin film improves weighted absorption from 23.8% to 39.9%. The PMMA embedding layer offers a guided wave mode as well as mechanical robustness, in addition to the resonant whispering gallery modes coupling. Broadband light-trapping enhancements are observed by dielectric surface textured structures of hemispheres, nanocones, nanospheres, or embedded nanospheres.

AB - An embedded nanosphere dielectric structure on an a-Si ultrathin film improves weighted absorption from 23.8% to 39.9%. The PMMA embedding layer offers a guided wave mode as well as mechanical robustness, in addition to the resonant whispering gallery modes coupling. Broadband light-trapping enhancements are observed by dielectric surface textured structures of hemispheres, nanocones, nanospheres, or embedded nanospheres.

UR - http://www.scopus.com/inward/record.url?scp=84877255364&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84877255364&partnerID=8YFLogxK

U2 - 10.1002/adma.201204596

DO - 10.1002/adma.201204596

M3 - Article

C2 - 23529900

AN - SCOPUS:84877255364

SN - 0935-9648

VL - 25

SP - 2617

EP - 2623

JO - Advanced Materials

JF - Advanced Materials

IS - 18

ER -

Broadband light-trapping enhancement in an ultrathin film a-si absorber using whispering gallery modes and guided wave modes with dielectric surface-textured structures

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this