Photocurrent Enhancement from Diketopyrrolopyrrole Polymer Solar Cells through Alkyl-Chain Branching Point Manipulation
نویسندگان
چکیده
منابع مشابه
Enhancing the photocurrent in diketopyrrolopyrrole-based polymer solar cells via energy level control.
A series of diketopyrrolopyrrole (DPP)-based small band gap polymers has been designed and synthesized by Suzuki or Stille polymerization for use in polymer solar cells. The new polymers contain extended aromatic π-conjugated segments alternating with the DPP units and are designed to increase the free energy for charge generation to overcome current limitations in photocurrent generation of DP...
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Organic solar cells made of polymers are an attractive alternative to the conventional solar cells which are commercially used today. The polymer solar cell is cheap to produce, due to the high absorption coefficients which limits the needed thickness of the material and due to the simple manufacturing process, which doesn’t demand high temperatures. However, the efficiencies of polymer solar c...
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Side chain engineering of an n-type polymer provides a means of maintaining solubility while increasing crystallinity and electron mobility, leading to enhanced photocurrent. Bulk heterojunction solar cells composed of a side chain engineered copolymer (PNDIS-30BO) as acceptor and PSEHTT as donor give 10.4 mA cm(-2) photocurrent and 4.4% efficiency.
متن کاملWide band gap diketopyrrolopyrrole-based conjugated polymers incorporating biphenyl units applied in polymer solar cells.
Incorporating biphenyls as co-monomers in electron-deficient diketopyrrolopyrrole (DPP) conjugated polymers enables widening the optical band gap to 1.70 eV. Power conversion efficiencies of 3.7-5.7% and high open-circuit voltages of 0.80-0.93 V are obtained in solar cells based on these wide band gap DPP polymers.
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ژورنال
عنوان ژورنال: Journal of the American Chemical Society
سال: 2013
ISSN: 0002-7863,1520-5126
DOI: 10.1021/ja406934j