Abstract
The morphology of conjugated polymers has critical influences on electronic and optical properties of optoelectronic devices. Even though lots of techniques and methods are suggested to control the morphology of polymers, very few studies have been performed inducing high charge transport along out-of-plane direction. In this study, the self-assembly of homo- and blended conjugated polymers which are confined in nanostructures is utilized. The resulting structures lead to high charge mobility along vertical direction for both homo- and blended conjugated polymers. Both semicrystalline and amorphous polymers show highly increased population of face-on crystallite despite intrinsic crystallinity of polymers. They result in more than two orders of magnitude enhanced charge mobility along vertical direction revealed by nanoscale conductive scanning force microscopy and macroscale IV characteristic measurements. Moreover, blends of semicrystalline and amorphous polymers, which are known to show inferior optical and electrical properties due to their structural incompatibility, are formed into harmonious states by this approach. Assembly of blends of semicrystalline and amorphous polymers under nanoconfinement shows charge mobility in out-of-plane direction of 0.73 cm2 V-1 s-1 with wide range of absorption wavelength from 300 to 750 nm demonstrating the synergistic effects of two different polymers.
Highlights
The morphology of conjugated polymers has critical influences on electronic and limited applications because of relatively large optical bandgaps and moderate and optical properties of optoelectronic devices
Amorphous polymers show highly increased population of face-on crystallite despite intrinsic crystallinity of polymers. They result in more than two orders of magnitude enhanced charge mobility along vertical direction revealed by nanoscale conductive scanning force microscopy and macroscale benzothiadiazole)] (PCDTBT), showed remarkable device performance through their broad absorption wavelength
Development of organic electronics was led by synthesizing additives,[14] UV irradiation,[15,16] solution aging[17] to induce new materials having various electrical, optical, and structural polymer aggregates in solution states or thermal,[18] solvent[19]
Summary
The morphology of conjugated polymers has critical influences on electronic and limited applications because of relatively large optical bandgaps and moderate and optical properties of optoelectronic devices. Polythiophens,[1,2,3,4,5,6,7] most In addition to such conventional approaches, meniscus-guided widely studied materials, have shown enormous possibilities deposition[20,21,22,23,24] of polymers showed a high degree of morphoand various application due to their ease of processing and logical control based on directed assembly and evaporation conrelatively higher charge mobility based on their semicrystalline trol of polymers in solution states.
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