Regioregular poly(3-alkylthiophenes) is a kind of conjugated polymers with HT-coupled structures . P3HT(head-to-tail) can be easy to access a low energy and low space obstacle coplanar conformation that leads to highly conjugated polymer , better conductivity and optical properties. In this research, we found out the different way of synthesis led to differences in properties such like regioregular, molecular weight. Above mentioned would influence spectrum of materials and device morphology. We chosen three kind of methods easily to synthesize from papers included FeCl3 Method, Grignard metathesis methods(Methylmagnesium bromide¡BTert-butylmagnesium chloride).
We observed the different synthetic methods we used led to different reaction and color. After the analysis, there are not only differences between regioregular and molecular weight but molecular conformation. We also noted there were some residues that could not be completely removed by ion in the polymerization process. Absorption spectrum of film is shifted showed it has different degrees of phase separation. The literature tell us that the molecular weight greatly influences the device efficiency, because it changes the morphology and that affects the mobility and Regioregular.
In this study, another field of research discusses the impact of ion. It was found after polymerization. The product not clean in the absorption spectrum of performance does not meet the solar cell requirements. After washing, it couldn¡¦t wash away the small amount of residue ion Fe, Mg, Ni, and it¡¦s about 1 ~ 3% in the total material. The experiment shows the various characteristics of different materials leads to change in device efficiency. Among them, the devices have the high molecular weight and good regioregular have the higher efficiency.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0819110-163226 |
| Date | 19 August 2010 |
| Creators | Pan, Jhong-Yu |
| Contributors | Yu-Kai Han, Ko-Shan Ho, Tzong-Liu Wang, Shiao-Wei Kuo, Wen-Yao Huang |
| 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-0819110-163226 |
| Rights | not_available, Copyright information available at source archive |
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