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Indexed by:期刊论文
Date of Publication:2014-05-28
Journal:JOURNAL OF MATERIALS CHEMISTRY C
Included Journals:SCIE、EI、Scopus
Volume:2
Issue:20
Page Number:4019-4026
ISSN No.:2050-7526
Abstract:Four novel D-pi-A-pi-D-type small molecules (SMs) were synthesized and their pi-linkage effects were investigated. Among them, SM2 with vinylene as the pi-linkage exhibited better molecular coplanarity, reaching a relatively higher power conversion efficiency (PCE) of 3.76%. SM3 and SM4 with acetylene and acrylonitrile as pi-linkages exhibited relatively higher open-circuit voltages (V-OC) of 0.93 V and 0.90 V, respectively, owing to their deep-lying HOMO levels. These results gave an important guide for developing new materials in solution-processed small molecule solar cells.
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