期刊
ACS APPLIED MATERIALS & INTERFACES
卷 3, 期 7, 页码 2275-2280出版社
AMER CHEMICAL SOC
DOI: 10.1021/am200145t
关键词
organic solar cells; diketopyrrolopyrrole; triads; n-type acceptor; intramolecular charge separation
资金
- Office of Science, Office of Basic Energy Sciences, Scientific User Facilities Division, U.S. Department of Energy [DE-AC02-05CH11231]
- Colorado School of Mines (CSM)
We report the characterization of a series of oligothiophene-diketopyrrolopyrrole-fullerene triads and their use as active materials for solution processed organic solar cells (OSCs). By incorporating the diketopyrrolopyrrole (DPP) core with electron rich oligothiophene units and electron withdrawing fullerene units, multifunctional electronic molecules have been prepared; these molecules show high solubility in common organic solvents, excellent photophysical properties with high extinction coefficients (1 x 10(4) to 1 x 10(5) M-1 cm(-1)) and broad absorption spectra coverage (250-800 nm), as well as suitable molecular orbital energy levels (HOMO of approximately -5.1 eV, LUMO of approximately -3.7 eV). Solution-processed thin-film organic field effect transistors (OFETs) from these triads revealed good n-type characteristics with electron mobilities up to 1.5 x 10(-3) cm(2) V-1 s(-1). With these multifunctional triads, single-component OSCs have been fabricated, exhibiting power conversion efficiencies (PCEs) of up to 0.5 % under AM 1.5 G simulated 1 sun solar illumination. Blending these molecules with poly(3-hexylthiophene) (P3HT) afforded bulk heterojunction OSCs with PCEs reaching as high as 2.41%.
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。
推荐
暂无数据