A ternary blend of a polymer, fullerene, and insulating self-assembling triptycene molecules for organic photovolatics

Abstract

We show that incorporation of 5 wt% triptycene leads to an improvement in polymer crystallinity, power conversion efficiency (maximum: 9.4%), and long-term stability.

Quantifying the optimal thickness in polymer:fullerene solar cells from the analysis of charge transport dynamics and photoabsorption

“…8a-c. The simulated J-V curves are in good agreement with the experimental data of P3HT:PCBM, [49][50][51][52][53]73 PffBT4T:PCBM, [46][47][48]73 and PCPDTBT:PC 71 BM, 54,55 showing that the calculation results are reasonable. Fig.…”

Supramolecular scaffolds enabling the controlled assembly of functional molecular units

“…16 ). 22 , 125 – 128 These particular triptycenes self-assemble into a “2D hexagonal array + 1D lamellar” structure through nested packing of the triple blades of the triptycene framework ( Fig. 16 ), affording a perfectly oriented macroscopic thin film on various substrates by simple vacuum evaporation or spin coating.…”

Triptycene Derivatives: From Their Synthesis to Their Unique Properties

“…As tripodal molecules, 1,8,13-functionalized triptycenes recently found advanced application in surface modification—in 2015, Seiki et al utilized the triptycene with three C12 side chains to self-assembly a remarkable organic thin film that was free of domain boundaries and structurally ordered up to the centimeter length scale [ 109 ]. The order and precise alignment of the molecular units of choice, which 1,8,13-functionalized triptycene allows for, are advantageous features for the promising field of high-performance organic thin-film materials [ 62 , 110 , 111 , 112 ]. The same 1,8,13 substitution pattern was used in models of molecular-level magnetic anisotropy [ 113 ], close nonbonded H–H contacts [ 114 ], and through-space Me–Ar interactions [ 115 ].…”