Octahexyltetrabenzotriazaporphyrin: A Discotic Liquid Crystalline Donor for High-performance Small-molecule Solar Cells
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Phase-transition, optical, and photoconductive properties of a discotic liquid crystalline donor, nonperipherally substituted octahexyltetrabenzotriazaporphyrin (C6TBTAPH<sub>2</sub>), was characterized for high-performance solution-processed bulk heterojunction (BHJ) organic solar cells (OSCs). C6TBTAPH<sub>2</sub> exhibited high hole and electron mobilities at room temperature, exceeding 0.18 cm<sup>2</sup> V<sup>−1</sup> s<sup>−1</sup>, and strong absorption at both B-band and Q-band. A high power conversion efficiency of 4.9% under AM 1.5G irradiation (100 mW cm<sup>−2</sup>) was achieved for BHJ OSCs utilizing phase-separated nanomaterials comprising C6TBTAPH<sub>2</sub> and 1-(3-methoxycarbonyl)propyl-1-phenyl-(6,6)C<sub>71</sub>.
- Chemistry Letters
Chemistry Letters 43(11), 1761-1763, 2014
The Chemical Society of Japan