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 language | English |
|---|---|
| Pages (from-to) | 1056-1062 |
| Number of pages | 7 |
| Journal | Progress in Photovoltaics: Research and Applications |
| Volume | 21 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 2013 Aug |
Keywords
- UV nanoimprint
- anti-reflection
- external quantum efficiency
- hot-embossing
- moth-eye pattern
- nano-pattern
- solar cell
- superhydrophobicity
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Renewable Energy, Sustainability and the Environment
- Condensed Matter Physics
- Electrical and Electronic Engineering
