4.4 Article

Synthesis of Selenium Based DII-A-DI-A-DII Type Small Molecular e-Donors Employing Stille Coupling and Their Thermal, Electrochemical and Photovoltaic Properties

期刊

CHEMISTRYSELECT
卷 5, 期 44, 页码 13800-13806

出版社

WILEY-V C H VERLAG GMBH
DOI: 10.1002/slct.202003216

关键词

benzoselenadiazole; DFT; D-II-A-D-I-A-D-II type Architecture; Small Molecule Donors; OBHJSCs; TD-DFT

资金

  1. CSIR [21(1026)/16/EMR-II]
  2. DST
  3. UGC-SRF
  4. AcSIR

向作者/读者索取更多资源

High power conversion efficiency (PCE) organic solar cells (OSC) with planar D-II-A-D-I-A-D-II structured organic molecule with alkylthiophene-bezodithiophene (SBDT) a midway donor unit D-I with varied number of fluorine atoms like benzoselenadiazole (SBTSe and SFBTSe) a acceptor unit and alkyl-bithiophene a end group and donor unit D-II, SFBTSe and SBTSe, were designed and synthesized for the appliance as donor moieties in OSC. It showed an intense absorption in visible expanse (582, 577 nm) and frontier orbital levels of HOMO (-5.49 and-5.50 eV), and LUMO level of (-3.57 and-3.59 eV), for SBTSe and SFBTSe respectively. The acceptor units were assigned using the results obtained from experiments and DFT/TD-DFT simulations. This study reveals that all the acceptors are not identical in influencing the energy levels. Besides acceptors, molecular framework also plays a significant role in this regard. In addition, we have found that the acceptor's performance depends on its electron withdrawing ability. This manuscript provides a better understanding about the acceptor's property relationship and vital insights on the design of novel terminal acceptor units with greater number of hetero-functionalities to developing the PCE of the OSC.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.4
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据