Four metallated conjugated oligothiophenes, S-1, S-2, S-3 and S-4, with platinum（II） aryleneethynylenes as the electron-rich building block were synthesized to investigate their physicochemical and photovoltaic prop...Four metallated conjugated oligothiophenes, S-1, S-2, S-3 and S-4, with platinum（II） aryleneethynylenes as the electron-rich building block were synthesized to investigate their physicochemical and photovoltaic properties. These small molecules possess fairly low-lying HOMO energy levels which match with the LUMO energy level of the electron acceptor PC70BM （[6,6]-phenyl-C71-butyric acid methyl ester）. Using the simple process of spin-coating solution fabrication technique, S-I：PC70BM （1：4, w/w） based organic solar cells exhibiting a high Voc of 0.913 V, with a PCE value of 0.88% were developed. In contrast, the OSC device based on S-2：PC70BM （3：7, w/w） displayed a higher PCE of 1.59% with a higher Jsc value of 5.89 mA cm^-2. The device based on S-4：PCToBM （1：4, w/w） exhibited a PCE value of 1.56%, with a Voc of 0.917 V.展开更多
基金the National Natural Science Foundation of China(51373145)Science,Technology and Innovation Committee of Shenzhen Municipality(JCYJ20120829154440583)+8 种基金the Hong Kong Research Grants Council(HKBU202410)Hong Kong Baptist University(FRG2/12-13/083)for financial supportpartially supported by a grant from the Research Grants Council of the Hong Kong Special Administrative Region,China(T23-713/11)the 111 Projectthe Beijing Engineering Research Center of Food Environment and the Public Health from Minzu University of China(B08044 and 10301-01404026)for financial supportsupported by the Partner State Key Laboratory of Environmental and Biological Analysis(SKLP-14-15-P011)the Strategic Development Fund of HKBUW.C.H.Choy would like to acknowledge the General Research Fund(HKU711813 and HKU711612E)from the Research Grants Council of Hong Kong Special Administrative Region,Chinathe grant CAS14601 from CAS-Croucher Funding Scheme for Joint Laboratories
文摘Four metallated conjugated oligothiophenes, S-1, S-2, S-3 and S-4, with platinum（II） aryleneethynylenes as the electron-rich building block were synthesized to investigate their physicochemical and photovoltaic properties. These small molecules possess fairly low-lying HOMO energy levels which match with the LUMO energy level of the electron acceptor PC70BM （[6,6]-phenyl-C71-butyric acid methyl ester）. Using the simple process of spin-coating solution fabrication technique, S-I：PC70BM （1：4, w/w） based organic solar cells exhibiting a high Voc of 0.913 V, with a PCE value of 0.88% were developed. In contrast, the OSC device based on S-2：PC70BM （3：7, w/w） displayed a higher PCE of 1.59% with a higher Jsc value of 5.89 mA cm^-2. The device based on S-4：PCToBM （1：4, w/w） exhibited a PCE value of 1.56%, with a Voc of 0.917 V.
