1046864-83-8Relevant articles and documents
Inversion of dominant polarity in ambipolar polydiketopyrrolopyrrole with thermally removable groups
Lee, Junghoon,Han, A-Reum,Hong, Jayeon,Seo, Jung Hwa,Oh, Joon Hak,Yang, Changduk
, p. 4128 - 4138 (2012)
A narrow bandgap polymeric semiconductor, BOC-PTDPP, comprising alkyl substituted diketopyrrolopyrrole (DPP) and tert-butoxycarbonyl (t-BOC)-protected DPP, is synthesized and used in organic field-effect transistors (OFETs). The polymer films are prepared by solution deposition and thermal annealing of precursors featuring thermally labile t-BOC groups. The effects of the thermal cleavage on the molecular packing structure in the polymer thin films are investigated using thermogravimetric analysis (TGA), UV-vis spectroscopy, atomic force microscopy (AFM), Fourier transform infrared (FT-IR) spectroscopy, and X-ray diffraction (XRD) analysis. Upon utilization of solution-shearing process, integrating the ambipolar BOC-PTDPP into transistors shows p-channel dominant characteristics, resulting in hole and electron mobilities as high as 1.32 × 10-2 cm2 V-1 s-1 and 2.63 × 10-3 cm2 V-1 s-1, which are about one order of magnitude higher than those of the drop-cast films. Very intriguingly, the dominant polarity of charge carriers changes from positive to negative after the thermal cleavage of t-BOC groups at 200 °C. The solution-sheared films upon subsequent thermal treatment show superior electron mobility (μe = 4.60 × 10-2 cm2 V -1 s-1), while the hole mobility decreases by one order of magnitude (μh = 4.30 × 10-3 cm2 V-1 s-1). The inverter constructed with the combination of two identical ambipolar OFETs exhibits a gain of ~10. Reported here for the first time is a viable approach to selectively tune dominant polarity of charge carriers in solution-processed ambipolar OFETs, which highlights the electronically tunable ambipolarity of thermocleavable polymer by simple thermal treatment. A narrow bandgap polymeric semiconductor, BOC-PTDPP, comprising alkyl substituted diketopyrrolopyrrole (DPP) and tert-butoxycarbonyl (t-BOC)-protected DPP, is synthesized and used in organic field-effect transistors (OFETs). The dominant polarity of charge carriers changes from positive to negative after the thermal cleavage of t-BOC groups at 200 °C. Copyright
Molecular design directs self-assembly of DPP polycatenars into 2D and 3D complex nanostructures
Chang, Qing,Cheng, Xiaohong,Du, Xuyang,Ge, Tao,Liu, Xinhao,Ma, Tao
, (2022/02/05)
Novel diketopyrrolopyrrole (DPP) based polycatenars characterized with a long π-conjugated rigid calamitic core, different side groups (t-Boc, H or PEO) at the lactam N atoms of the central DPP core and terminal hydrophobic paraffinic chains were prepared
ORGANIC SOLAR CELL AND METHOD FOR MANUFACTURING SAME
-
Paragraph 0150; 0151; 0152; 0153, (2016/12/16)
The present specification relates to an organic solar cell and a method for preparing the same. Specifically, an organic solar cell according to the present specification may be prepared by a solution process, and may include a photoactive layer which has a strong binding force due to a hydrogen bond and is excellent in crystallinity. Accordingly, the organic solar cell according to the present specification may exhibit characteristics which are excellent in driving voltage, current, service life, and the like.