Substituting the postproduction treatment for bulk-heterojunction solar cells using chemical additives
✍ Scribed by Almantas Pivrikas; Philipp Stadler; Helmut Neugebauer; Niyazi Serdar Sariciftci
- Publisher
- Elsevier Science
- Year
- 2008
- Tongue
- English
- Weight
- 565 KB
- Volume
- 9
- Category
- Article
- ISSN
- 1566-1199
No coin nor oath required. For personal study only.
✦ Synopsis
Postproduction treatment of poly (3-alkylthiophene) based bulk-heterojunction solar cells is an important and required procedure in order to fabricate organic solar cells with highest power conversion efficiencies. Postproduction treatment, by means of annealing solar cells at elevated temperatures during which an external voltage is simultaneously applied, is not very suitable for large scale production schemes due to the need for well controlled environment and involvement of flexible substrates. A faster and easier method for improving the efficiency, like a simple addition of chemicals, would be highly desirable. We have studied the effect of alkyl thiol addition into bulk-heterojunction solar cells, based on poly(3-hexylthiophene) and [6,6]-phenyl C 61 -butyric acid methyl ester (PCBM) mixtures as reported first by Santa Barbara group [