An ordered array based on vapor-processed phthalocyanine nanoribbons

Abstract

The ordered arrays of CuPc/F₁₆CuPc nanoribbons have been formed by two different methods, an in situ vapor growth method and a pushing transfer method based on vapor grown bundle-like nanoribbons. Low deposition temperatures and low vapor concentrations are critical for the growth of small-size nanoribbons. During the growth process, the external moment of the small-size nanoribbons gradually increases, which helps to bend and adhere the slim nanoribbons to the substrate surface, thus leading to the formation of in situ grown CuPc/F₁₆CuPc single-crystal nanoribbon arrays. On the other hand, based on the commonly observed bundle-like nanoribbons in a high-temperature deposition region, well ordered nanoribbon arrays can be formed by a pushing transfer process. These results show the promising potential for large-scale and high-efficiency fabrication of organic nanowire/nanoribbon transistors.