个人信息Personal Information
教授
博士生导师
硕士生导师
主要任职:无
其他任职:精细化工国家重点实验室副主任、大连理工大学-瑞典皇家工学院分子器件联合研究中心主任
性别:男
毕业院校:大连理工大学
学位:博士
所在单位:化工学院
学科:应用化学. 精细化工
办公地点:大连理工大学西部校区化工实验楼E-223
联系方式:0411-84986493
电子邮箱:sunlc@dlut.edu.cn
Efficient and Stable Dye-Sensitized Solar Cells Based on a Tetradentate Copper(II/I) Redox Mediator
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论文类型:期刊论文
发表时间:2018-09-12
发表刊物:ACS APPLIED MATERIALS & INTERFACES
收录刊物:PubMed、SCIE
卷号:10
期号:36
页面范围:30409-30416
ISSN号:1944-8244
关键字:copper redox mediator; dye-sensitized solar cells; ligand engineering; stability; energy conversion
摘要:The identification of an efficient and stable redox mediator is of paramount importance for commercialization of dye-sensitized solar cells (DSCs). Herein, we report a new class of copper complexes containing diamine-dipyridine tetradentate ligands (L1 = N,N'-dibenzyl-N,N'-bis-(pyridin-2-ylmethyl)ethylenediamine; L2 = N,N'-dibenzyl-N,N'-bis (6-methyl-pyridin-2-ylmethyl)ethylenediamine) as redox mediators in DSCs. Devices constructed with [Cu(L2)](2+/+) redox couple afford an impressive power conversion efficiency (PCE) of 9.2% measured under simulated one sun irradiation (100 mW cm(-2), AM 1.5G), which is among the top efficiencies reported thus far for DSCs with copper complex-based redox mediators. Remarkably, the excellent air, photo, and electrochemical stability of the [Cu(L2)](2+/+) complexes renders an outstanding long-term stability of the whole DSC device, maintaining similar to 90% of the initial efficiency over 500 h under continuous full sun irradiation. This work unfolds a new platform for developing highly efficient and stable redox mediators for large-scale application of DSCs.