期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 53, 期 52, 页码 14378-14381出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201409208
关键词
green chemistry; power conversion; molecular solar cells; organic semiconductors; sustainable chemistry
资金
- Institute for Collaborative Biotechnologies from the U.S. Army Research Office [W911NF-09-0001]
- Office of Naval Research [N00014-14-1-0101]
- Office of Science, Office of Basic Energy Sciences, Scientific User Facilities Division, of the U.S. Department of Energy [DE-AC0205CH11231]
- Stanford Synchrotron Radiation Light source
- U.S. Department of Energy
High-efficiency bulk heterojunction (BHJ) organic solar cells with power conversion efficiencies of more than 5% can be fabricated using the green solvent 2-MeTHF. The active layers comprise a blend of a molecular semiconductor donor with intermediate dimensions (X2) and the soluble fullerene derivative [6,6]-phenyl-C-61-butyricacidoctylester (PC61BC8). A switch of the processing solvent from chloroform to 2-MeTHF leads to no negative impacts on the morphology and charge-transport properties of optimally performing BHJ films. Examinations by absorption spectroscopy, atomic force microscopy, and grazing incidence wide-angle X-ray scattering reveal no significant modification of morphology. These results show that green solvents can be excellent alternatives for large-area printing of high-performance organic photovoltaics (OPVs) and thus open new opportunities for sustainable mass production of organic solar cells and other optoelectronic devices.
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