| AVS 55th International Symposium & Exhibition | |
| Plasma Science and Technology | Tuesday Sessions |
| Session PS-TuP |
| Session: | Plasma Science Poster Session |
| Presenter: | H. Chae, Sungkyunkwan University, Republic of Korea |
| Authors: | H. Chae, Sungkyunkwan University, Republic of Korea C. Pang, Sungkyunkwan University, Republic of Korea K. Park, Sungkyunkwan University, Republic of Korea D. Jung, Sungkyunkwan University, Republic of Korea H. Kim, Sungkyunkwan University, Republic of Korea |
| Correspondent: | Click to Email |
Plastic organic solar cells are getting attention due to its possible advantages in flexibility and processing costs. In this presentation, brief review of issues of plastic solar cells will be discussed with possible solutions. Our approaches to improve efficiency of plastic solar cells with plasma processing of electrodes will be discussed in details. One of the approaches is to improve the efficiency of polymer solar cells by patterning indium tin oxide (ITO) electrode layer. Light absorbance was enhanced with ITO layer patterning for the improvement of power conversion efficiency of polymer solar cells. The line-and-space pattern of polystyrene layer is formed on the top of 100nm thick indium tin oxide layer by capillary force lithography process and the patterning. And surface roughening of the ITO layer were completed with O2 and Ar plasma etching with various step heights of 20nm to 60nm. We have shown that the patterning of the ITO can increase the efficiency of the plastic solar cells. Another approach to be discussed is plasma surface modification of the solar cell electrodes. Plasma processing of the ITO surface with fluorocarbon plasmas and oxygen plasma increased the efficiency of the plastic solar cells by removing organic contaminants in the ITO surface and by surface oxidation.