高溶解性チオフェンオリゴマーの塗布製膜性と有機薄膜太陽電池特性(TFT(有機,酸化物),半導体プロセス・デバイス(表面,界面,信頼性),一般)

概要

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We synthesized thiophene octamer and dodecamer substituted with an aryl group at the position 3 of the thiophene rings, and report that those were highly soluble in chloroform enough to make an organic film by spin coating, although non-substituted thiophene oligomers (e.g.:α-sexithiophene) were hardly soluble in organic solvents. Although some steric hindrance exists around the position 3 of the thiophene rings, X-ray crystallographic analysis showed that the oligomers had a stereoregularity, and a carrier mobility of the dodecamer as an FET devices was 0.12cm^2/Vs. In this report, we fabricated bulk heterojunction solar cells using the oligomers, and found that the dodecamer only forms a uniform film and shows photovoltaic property.
2011-07-22