Based on the solar cell¡¦s four characteristic parameter open-circuit voltage (Voc) makes the discussion.The study of the relation VOC¡¦s paper uses empirical formula. VOC¡¦s formula is ¡§VOC=(1/e)(¡UEDonorHOMO¡W-¡UEAcceptorLUMO¡W)-0.3V¡¨. We can know that VOC related to donor material¡¦s HOMO and acceptor material¡¦s LUMO, if we need a high VOC, it can change the structure of donor material to have higher HOMO value, as well as the acceptor material have lower LUMO value. Our active layer except poly(3-hexylthiophene) (P3HT) and [6,6]-phenyl-C61-Butyric acid methyl ester (PCBM), the third material was blended to discuss their effect on the VOC.
Two kind of different bromined-P3HT (Br-P3HT) were used 40% and 100% bromined-P3HT to blend in active layer. Their Three materials blended under the different weight percent and the basic device configurations in this study was ITO / PEDOT : PSS / P3HT : Br-P3HT : PCBM / Al , efficiency was measured under AM 1.5G 100mW/cm2 illumination.
When blended Br-P3HT(100%) in the active layer, VOC increased from 0.6V to 0.68V and the surface roughness makes short-circuit current and fill factor, increased make lower power conversion efficiency.
When blended Br-P3HT(40%) into the active layer, not only can increase VOC to 0.66V, but influence the short-circuit current and the fill factor. The power conversion efficiency changed from 2.20% to 2.46%.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0818110-112204 |
| Date | 18 August 2010 |
| Creators | Chen, Deng-wei |
| Contributors | Ping-tsung Huang, Yu-Kai Han, Huang wen-Yao, Ko-shan Ho, Chih-chien Lee, Mei-ying Chang |
| Publisher | NSYSU |
| Source Sets | NSYSU Electronic Thesis and Dissertation Archive |
| Language | Cholon |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0818110-112204 |
| Rights | not_available, Copyright information available at source archive |
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