Fabrication of highly transparent self-cleaning protection films for photovoltaic systems

Seong Hwan Lee, Kang Soo Han, Ju Hyeon Shin, Seon Yong Hwang, Heon Lee

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

A moth-eye anti-reflective structure was fabricated by hot-embossing and UV nanoimprint lithography on a solar cell protective film to suppress the reflection of incident light. Moreover, a superhydrophobic surface was developed by reducing the surface energy by forming a hydrophobic self-assembled monolayer coating on an anti-reflective structured resin surface. Therefore, the transmittance of incident light was increased by the anti-reflective structure. As a result, the solar cell efficiency was enhanced and the total accumulated electrical energy generated by a solar cell with a nano-patterned polymeric film was increased. The efficiency of each solar cell was evaluated by an analysis of its I-V characteristics using a solar simulator, and the external quantum efficiency according to the wavelength of incident light was analyzed by using an incident photon-to-current conversion efficiency system. Finally, the enhancement of the generated power was confirmed by a field test and a power charging experiment.

Original languageEnglish
Pages (from-to)1056-1062
Number of pages7
JournalProgress in Photovoltaics: Research and Applications
Volume21
Issue number5
DOIs
Publication statusPublished - 2013 Aug 1

Fingerprint

cleaning
Cleaning
Solar cells
solar cells
Fabrication
fabrication
moths
solar simulators
Nanoimprint lithography
embossing
polymeric films
field tests
Protective coatings
Self assembled monolayers
electric power
Quantum efficiency
Interfacial energy
Polymer films
resins
Conversion efficiency

Keywords

  • anti-reflection
  • external quantum efficiency
  • hot-embossing
  • moth-eye pattern
  • nano-pattern
  • solar cell
  • superhydrophobicity
  • UV nanoimprint

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Fabrication of highly transparent self-cleaning protection films for photovoltaic systems. / Lee, Seong Hwan; Han, Kang Soo; Shin, Ju Hyeon; Hwang, Seon Yong; Lee, Heon.

In: Progress in Photovoltaics: Research and Applications, Vol. 21, No. 5, 01.08.2013, p. 1056-1062.

Research output: Contribution to journalArticle

Lee, Seong Hwan ; Han, Kang Soo ; Shin, Ju Hyeon ; Hwang, Seon Yong ; Lee, Heon. / Fabrication of highly transparent self-cleaning protection films for photovoltaic systems. In: Progress in Photovoltaics: Research and Applications. 2013 ; Vol. 21, No. 5. pp. 1056-1062.
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