光电导性
富勒烯
材料科学
旋涂
共轭体系
复合材料
聚合物
吸收(声学)
烷基
分子
溶剂
涂层
化学工程
光电子学
化学
有机化学
工程类
作者
Jeff Peet,Cesare Soci,Robert C. Coffin,Thuc‐Quyen Nguyen,Alexander Mikhailovsky,D. Moses,Guillermo C. Bazan
摘要
The authors poly(3-hexylthiophene)/[6,6]-phenyl C61-butyric acid methyl ester present a technique for modifying the internal structure of bulk heterojunction films which yields significantly improved photoconductivity. This method comprises the addition of alkyl thiol molecules to the polymer/fullerene solution prior to spin coating. Based on the steady-state and transient photoconductivity measurements, the photoresponsivity is an order of magnitude greater than that in films spun from pristine solvent; additionally, the carrier mobility measurements indicate significant increase in the hole mobility, consistent with the enhanced structural order inferred from x-ray diffraction and optical absorption measurements.
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