A broadband and omnidirectional light-harvesting scheme employing nanospheres on Si solar cells

Guan Jhong Lin, Hsin Ping Wang, Der Hsien Lien, Po Han Fu, Hung Chih Chang, Cheng Han Ho, Chin An Lin, Kun Yu Lai, Jr Hau He*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

38 Scopus citations


The optimized nanospheres (NSs) are simulated and then employed as light-harvesting nanostructures on Si solar cells (SCs). Uniformly distributed monolayers of NSs effectively suppress the reflection over the broadband region at the incident angles up to 85°, greatly improving the optical absorption of the SCs. The calculation results indicating significant reflection elimination and strong forward scattering agree with those obtained by experimental measurements, where the devices with NSs exhibit improved external quantum efficiencies by 13% at 800. nm and conversion efficiency by 21.6%. This simple, controllable and scalable fabrication of broadband and omnidirectional light-harvesting nanostructures is desired from the standpoint of practical applicability in SCs.

Original languageEnglish (US)
Pages (from-to)36-43
Number of pages8
JournalNano Energy
StatePublished - May 2014
Externally publishedYes

Bibliographical note

Funding Information:
This work was supported by National Science Council of Taiwan (102–2628-M-002–006-MY3 and 101–2221-E-002–115-MY2) and National Taiwan University (103R7823).


  • Light harvesting
  • Nanospheres
  • Omnidirectionality
  • Scattering
  • Solar cells

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • General Materials Science
  • Electrical and Electronic Engineering


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