3,8-Dialkoxynaphthodithiophene based copolymers for efficient polymer solar cells

Wetting, Solubility and Chemical Characteristics of Plasma-Polymerized 1-Isopropyl-4-Methyl-1,4-Cyclohexadiene Thin Films

“…The 10-W pp-GT thin films also showed the largest variations for both spreading and absorption. However, smaller effects were observed for 75-W films, where the evaporation phenomenon was detected, but was almost negligible (ΔA = −0.01 mm 2 ). An indication of this is also provided in Figure 6, where the experimental heights of the water droplet are displayed.…”

“…Organic thin film materials have many potential and implemented applications, from biocompatible and antifouling coatings in medical devices to protective coatings, waveguides and component materials in optoelectronic devices, such as flexible organic electroluminescent devices (OLED), organic photovoltaics (OPV) and organic thin film transistors (OTFT) [1][2][3][4][5][6]. The motivation for using organic materials stems from their chemical versatility, low cost, low temperature fabrication and ability for reel-to-reel printing, as well as mechanical flexibility [1].…”

Polymer design for solar cell – Current trend and future scenario

“…Further, another donor molecule, 3,8-dialkoxynaphthodithiophene (NDT) was copolymerised with thienothiophene or fluorinated thienothiophene to afford P107 and P108, respectively. Presence of alkoxy side chain increased the processibility and hence improved the performance of both the polymers with better PCEs [106]. Copolymerisation of the naphtho[1,2-b:5,6-b 0 ]dithiophene (NDT) with another acceptor thieno [3,4-b]thiophene and fluorinated thieno [3,4-b]thiophene was done to afford (P109) and (P110), respectively to compare the electron withdrawing capability of the acceptors.…”

Naphthodithiophenes: Emerging Building Blocks for Organic Electronics

“…In particular, P5 presents its versatility as a high‐performance p‐type semiconducting material; P5 ‐based OFETs showed hole mobility as high as 0.54 cm 2 V −1 s −1 , and its BHJ solar cells with PC 61 BM afforded a PCE close to 5% (Table ). These superior characteristics demonstrated by the early NDT‐based D–A polymers prompted researchers to develop new analogues with different A units, such as thieno[3,4‐ b ]thiophene (TT), 2,5‐dihydropyrrolo[3,4‐ c ]pyrrole‐1,4‐dione (diketopyrrolopyrrole, DPP), TzTz, quinoxaline (QX), and benzo[ c ][1,2,5]oxadiazole (BOz) (Figure ) …”

“…Compared with the NDT3‐based polymers, NDT1‐based polymers have been less studied so far. However, Lee and co‐workers developed polymers with the 5,10‐dialkyloxy NDT1 unit combined with the TT units ( P2 and P3 ) following their initial work on P1 . Introduction of TT units into the polymer backbone effectively lowered E HOMO , especially for fluorine‐substituted TT ( P3 ) compared to P1 possessing the TPD unit (Table ).…”