Boron Subphthalocyanine Chloride as an Electron Acceptor for High-Voltage Fullerene-Free Organic Photovoltaics

被引：97
作者：
Beaumont, Nicola [1 ]
Cho, Sang Wan [2 ]
Sullivan, Paul [1 ]
Newby, David [2 ]
Smith, Kevin E. [2 ]
Jones, Tim S. [1 ]
机构：
[1] Univ Warwick, Dept Chem, Coventry CV4 7AL, W Midlands, England
[2] Boston Univ, Dept Phys, Boston, MA 02215 USA
来源：
ADVANCED FUNCTIONAL MATERIALS | 2012年 / 22卷 / 03期
基金：
英国工程与自然科学研究理事会;
关键词：
organic photovoltaics; photoelectron spectroscopy; tetracene; boron subphthalocyanine; fullerenes; HETEROJUNCTION SOLAR-CELLS; C-60; HETEROJUNCTION; SEMICONDUCTORS; FILMS;
D O I：
10.1002/adfm.201101782
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
High-efficiency fullerene-free single-heterojunction (SHJ) organic photovoltaic (OPV) cells consisting of tetracene (Tc) as a typical donor material and boron subphthalocyanine chloride (SubPc) as an acceptor material are reported. Cells containing SubPc as a direct replacement for C60 exhibit an similar to 60% improvement in open circuit voltage (Voc) achieving a maximum Voc of 1.24 V, which is amongst the highest values acheived to date for SHJ devices. This resulted in an overall improvement of similar to 60% in power conversion efficiency from 1.8%, for Tc/C60 cells, to 2.9% for Tc/SubPc. The OPV device results are complemented by soft Xray photoelectron spectroscopy (PES) measurements of the interfacial energetics of both systems. The results demonstrate that SubPc shows considerable promise as an electron acceptor material for future cell designs.
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收藏
页码：561 / 566
页数：6
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