Organic π-conjugated compounds have drawn much attention owing to their potential applications in organic thin-film optoelectronics. Over the last 20 years, tremendous progress has been achieved in the design and fabrication of these compounds. In this regard, charge-transporting properties of organic thin films have found to be crucial in the device performances. It is well-known that charge transport is limited by grain boundaries in the films as well as molecular arrangements within the grains. Therefore, a new method that enhances electrical communication between the grains as well as modulating the arrangements within the grains is necessary to improve device performances.
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