A bottom-up technique using an aqueous solution method was adopted to fabricate a bio-mimicked antireflection (AR) coating for a CuInGaSe2 (CIGS) solar cell. On controlling the morphology of the solution-grown zinc oxide (ZnO) nanostructure the average reflectance of the CIGS solar cell employing the bio-mimicked AR coating decreased from 6.14% to 1.46%, and the efficiency of the solar cell increased from 10% to 11.5%. The mechanism by which the solar cell′s efficiency was enhanced is thought to be the effect of the gradual increase in the refractive index between air and the top electrode due to the insertion of the ZnO nanostructure.
Bibliographical noteFunding Information:
This research was supported by SNT funded by the Ministry of Knowledge Economy of Korea ( 2008NPV12J0431202009 ) and by the WCU (World Class University) program through the National Research Foundation of Korea funded by the Ministry of Education, Science, and Technology ( R32–20031 ).
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Renewable Energy, Sustainability and the Environment
- Surfaces, Coatings and Films