https://scholars.lib.ntu.edu.tw/handle/123456789/349314
標題: | Three-dimensional nanoscale imaging of polymer bulk-heterojunction by scanning electrical potential microscopy and C60 + cluster ion slicing | 作者: | Yu, B.-Y. Lin, W.-C. Huang, J.-H. Chu, C.-W. Lin, Y.-C. Kuo, C.-H. Lee, S.-H. Wong, K.-T. Ho, K.-C. Shyue, J.-J. KUO-CHUAN HO KEN-TSUNG WONG |
公開日期: | 2009 | 卷: | 81 | 期: | 21 | 起(迄)頁: | 8936-8941 | 來源出版物: | Analytical Chemistry | 摘要: | Solution-processable fullerene and copolymer bulk-heterojunctions are widely used as the active layer of solar cells. It is known that the controlled phase-separation in the film provides a pathway for carrier transportation and is crucial to efficiency. In this work, scanning electrical potential microscopy (SEPM) is used to examine the surface distribution of [6,6]phenyl-C61-butyric acid methyl ester and poly(3-hexylthiophene), which form the bulk-heterojunction. Because the two components have different energies in the highest occupied molecular orbital (HOMO), the differences in contact potential yield strong contrast in SEPM. A cluster ion beam (C60+) is used to remove the surface in order to determine the structure below, and SEPM is used to analyze the newly exposed surface. With the SEPM images acquired from different depth through the material stacked, a 3D volume image is obtained. It is demonstrated that using SEPM with cluster ion slicing is an effective tool for studying the 3D nanostructures of soft materials. © 2009 American Chemical Society. |
URI: | http://www.scopus.com/inward/record.url?eid=2-s2.0-70350639291&partnerID=MN8TOARS http://scholars.lib.ntu.edu.tw/handle/123456789/349314 |
DOI: | 10.1021/ac901588t | SDG/關鍵字: | Active Layer; Bulk heterojunction; Bulk-heterojunctions; Butyric acids; Carrier transportation; Cluster ion beams; Cluster ions; Contact potential; Effective tool; Electrical potential; Highest occupied molecular orbital; Methyl esters; Nano-scale imaging; Poly (3-hexylthiophene); Polymer bulk; Processable; Soft material; Strong contrast; Surface distributions; Two-component; Volume image; Esters; Fatty acids; Fullerenes; Heterojunctions; Ions; Molecular orbitals; Phase separation; Photovoltaic cells; Surfaces; Three dimensional; [6,6]phenyl c61 butyric acid methyl ester; nanomaterial; poly(3 hexylthiophene); polymer; unclassified drug; article; chemical structure; electric potential; energy; image analysis; nanoanalysis; nanoimaging; orbit; phase separation; scanning electrical potential microscopy; surface property; three dimensional imaging |
顯示於: | 化學系 |
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