文献类型：期刊文献

英文题名：A new type of multibenzyloxy-wrapped porphyrin sensitizers for developing efficient dye-sensitized solar cells

作者：Chen, Yingying[1,2];Zeng, Kaiwen[1,2];Li, Chengjie[1,2];Liu, Xiujun[1,2];Xie, Yongshu[1,2]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Key Lab Adv Mat, Shanghai Key Lab Funct Mat Chem, Meilong 130, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Chem & Mol Engn, Inst Fine Chem, Meilong 130, Shanghai 200237, Peoples R China

年份：2020

卷号：24

期号：1-3

起止页码：401

外文期刊名：JOURNAL OF PORPHYRINS AND PHTHALOCYANINES

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000516708800045)】；

基金：This work was financially supported by the NSFC (21772041, 21702062, 21811530005), the Program for Professor of Special Appointment (Eastern Scholar; GZ2016006) at Shanghai Institutions of Higher Learning, Shanghai Pujiang Program (17PJ1401700), and the Fundamental Research Funds for the Central Universities (WK1616004, 222201717003, 222201714013). The authors thank the Research Center of Analysis and Test of East China of Science and Technology for help on the characterization.

语种：英文

外文关键词：dye-sensitized solar cells; porphyrins; dye aggregation; wrapped structures; cosensitization

摘要：Porphyrin dyes have been widely used for the fabrication of efficient dye-sensitized solar cells (DSSCs). However, dye aggregation and charge recombination still exert negative effects on photovoltaic performance, resulting in unsatisfactory power conversion efficiencies (PCEs). Herein, we report a new class of porphyrin sensitizers, XW52 and XW53 employing four benzyloxy groups to wrap the porphyrin cores. As a result, an efficiency of 7.6% was obtained for XW52, with V-oc and J(sc) of 668 mV and 16.63 mA cm(-2), respectively. Compared with XW52, an additional 2,6-dialkoxyphenyl group has been introduced to the N-atom of the phenothiazine donor to furnish XW53 with the aim to further improve the anti-aggregation character and the solubility, and thus the V oc was improved to 674 mV, and a higher efficiency of 7.9% was achieved for XW53. Upon cosensitization with PT-C6, the V-oc and J(sc) were synergistically enhanced to 727 mV and 18.67 mA cm(-2), respectively. As a result, a high efficiency of 9.6% was successfully achieved for the cosensitization system of XW53 + PT-C6. These results provide an effective novel strategy for designing efficient porphyrin dyes by introducing multiple benzyloxy groups to the meso-phenyl groups.