155166-89-5Relevant articles and documents
Improving photovoltaic properties of the linear A-Ar-A type small molecules with rhodanine by extending arylene core
Liu, Bin,Duan, Linrui,Chen, Jianhua,Duan, Xiongwei,Lei, Ting,Cai, Yufeng,Wang, Qiong,Tan, Hua,Yang, Renqiang,Zhu, Weiguo
, p. 42 - 49 (2017)
In order to efficiently tune photovoltaic performance, a series of linear A-Ar-A type small molecules (SMs) of (DRCN3T)2Ar were designed and synthesized, which contain the same terminal of 2-(1,1-dicyanomethylene) rhodanine (DRCN) and π-bridged space of 5-vinyl-trithiophene (3T), but different central arylene (Ar) unit, respectively. Significantly extending film absorption and increasing hole mobility were obtained in these SMs with enlarging Ar units from phenylene (Ph), naphthylene (Nap) to anthrylene (Ant). As a result, photovoltaic properties were remarkably improved in these SM/PC71BM based solution-processing organic solar cells (OSCs) by enlarging Ar units in (DRCN3T)2Ar. The highest power conversion efficiency of 5.15% with a short-circuit current density of 11.34 mA cm?2 was obtained in the (DRCN3T)2Ant based device, which is three times of that in the (DRCN3T)2Ph-based device. Our work further indicates that properly extending Ar core could be beneficial to improve photovoltaic properties for the A-Ar-A type SMs.
Acceptor-donor-acceptor small molecules containing benzo [1,2-b:4,5-b′]dithiophene and rhodanine units for solution processed organic solar cells
Fan, Qunping,Li, Min,Yang, Pingao,Liu, Yu,Xiao, Manjun,Wang, Xiangdong,Tan, Hua,Wang, Yafei,Yang, Renqiang,Zhu, Weiguo
, p. 13 - 19 (2015)
Two novel solution-processed acceptor-donor-acceptor (A-D-A) structured organic molecules with 5,8-disubstituted benzo[1,2-b:4,5-b′]dithiophene (BDT or BDTT) as central and donor units, 2-(1,1-dicyanomethylene)rhodanine (DCRD) as acceptor unit and terminal group, and trithiophene (T3) as π-bridges, D(T3-DCRD)-BDT and D(T3-DCRD)-BDTT, are designed and synthesized for the application as donor materials in organic solar cells (OSCs). Both compounds exhibit broad absorption covering the wavelength range 300-750 nm and the relatively lower HOMO energy levels from -5.39 to -5.46 eV. D(T3-DCRD)-BDTT demonstrates strong absorbance and higher hole mobility than that of D(T3-DCRD)-BDT. The power conversion efficiency (PCE) values of the OSCs based on the compounds/PC61BM (1:1, w/w) are 1.10% for D(T3-DCRD)-BDT and 1.94% for D(T3-DCRD)-BDTT, under the illumination of AM. 1.5G, 100 mW/cm-2. Furthermore, the high open-circuit voltage (Voc) values are 0.93 V for D(T3-DCRD)-BDT and 0.96 V for D(T3-DCRD)-BDTT, respectively. It indicates that incorporating DCRD as an acceptor unit into D-A-D-type small molecule has proven to be promising candidates for high efficiency solution processed OSCs.
ORGANIC DYE FOR A DYE SENSITIZED SOLAR CELL
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Page/Page column 28-29, (2017/12/15)
An organic dye for a Dye Sensitized Solar Cell (DSSC) which comprises at least one electron acceptor unit and at least one ττ-conjugated unit. Said organic dye is particularly useful in a dye sensitized photoelectric conversion element which, in turn, may be used in a dye sensitized solar cell (DSSC).
ORGANIC DYE FOR A DYE-SENSITIZED SOLAR CELL
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Paragraph 0131; 0133, (2016/10/04)
Organic dye for a dye-sensitized solar cell (DSSC) comprising at least one electron-acceptor unit and at least one π-conjugated unit. Said organic dye is particularly useful in a dye-sensitized photoelectric transformation element which, in its turn, can be used in a dye-sensitized solar cell (DSSC).