Preparation of Single‐Crystalline Heterojunctions for Organic Electronics

Wu, Junhao; Li, Qinfen; Xue, Guobiao; Chen, Hongzheng; Li, Hanying

doi:10.1002/adma.201606101

Cited by 86 publications

(74 citation statements)

References 149 publications

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“…In addition to their intensive applications based on their host−guest chemistry, macrocycles have also been used as building blocks to construct solid materials including porous organic polymers (POPs), metal–organic frameworks (MOFs), and crystalline organic materials (COMs) . Particular attention should be paid to COMs, a class of organic materials featuring facile preparation, high crystallinity, structural diversity, chemical stability, solution‐processability, etc .…”

Section: Introductionmentioning

confidence: 99%

“…Different from MOFs that are composed of both inorganic (metal ions) and organic species (organic ligands) through coordination, COMs refer to a kind of crystalline materials composed of pure organics connected by either covalent or noncovalent bonds . For COMs connected by noncovalent bonds, the typical materials are organic molecular crystals with intriguing properties such as semiconductor, porosity, etc. Owing to the inefficient packing of organic building blocks in the crystal state, some molecular crystals display extrinsic porosity, which are often termed as hydrogen‐bonded organic frameworks (HOFs) or supramolecular organic frameworks (SOFs) .…”

Section: Introductionmentioning

confidence: 99%

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Supramolecular‐Macrocycle‐Based Crystalline Organic Materials

et al. 2019

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macrocycles. They have been also employed to modify the surface properties of metal nanoparticles via noncovalent host−guest interactions, [31] covering their applications in drug delivery, [32] highly sensitive sensors, [33] selective catalysis, [34] and so on.In addition to their intensive applications based on their host−guest chemistry, macrocycles have also been used as building blocks to construct solid materials including porous organic polymers (POPs), [35,36] metal-organic frameworks (MOFs), [37][38][39][40][41][42][43] and crystalline organic materials (COMs). [44][45][46][47][48][49][50][51][52][53][54][55][56][57] Particular attention should be paid to COMs, a class of organic materials featuring facile preparation, high crystallinity, structural diversity, chemical stability, solution-processability, etc. [58][59][60][61][62][63][64][65][66][67][68][69][70] Different from MOFs that are composed of both inorganic (metal ions) and organic species (organic ligands) through coordination, COMs refer to a kind of crystalline materials composed of pure organics connected by either covalent or noncovalent bonds. [71][72][73] For COMs connected by noncovalent bonds, the typical materials are organic molecular crystals with intriguing properties such as semiconductor, [53] porosity, [68] etc. Owing to the inefficient packing of organic building blocks in the crystal state, some molecular crystals display extrinsic porosity, which are often termed as hydrogen-bonded organic frameworks (HOFs) [74,75] or supramolecular organic frameworks (SOFs). [76][77][78][79][80] For COMs connected by covalent bonds, typical materials are crystalline covalent organic frameworks (COFs), which were firstly reported in 2005 by Yaghi and co-workers [44] Benefitting from rigid chemical bonds and building blocks, COFs show permanent and well-ordered porosity. [45][46][47][48] Supramolecular-macrocycle-based COMs, a class of COMs with macrocycles as the main building blocks, have drawn particular attention in recent years. According to their components, supramolecular-macrocycle-based COMs can be classified into two main categories, the ones composed of pure macrocycles and the others consisting of macrocycles and other simple organic building blocks. Owing to their prefabricated cavities of a certain type, some of macrocycle-based COMs exhibit intrinsic microporosity for guest adsorption in the solid state. On the other hand, the extrinsic porosity of some macrocyclebased COMs may form due to the inefficient packing of these rigid macrocyclic molecules in the crystalline state. In certain circumstances, both intrinsic and extrinsic microporosity can be created in a single lattice of a certain COM, thus leading to Supramolecular macrocycles are well known as guest receptors in supramolecular chemistry, especially host−guest chemistry. In addition to their wide applications in host−guest chemistry and related areas, macrocycles have also been employed to construct crystalline organic materials (COMs) owing to their particular structur...

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Supramolecular‐Macrocycle‐Based Crystalline Organic Materials

et al. 2019

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“…Theo rganic p-n heterojunction, which consists of the assembly of p-type and n-type semiconductors,i so ne of the most important units in modern electronics and microelectronics. [60] It can realize the function of ad iode or rectifier, and ambipolar transport properties can be observed in organic single-crystal p-n heterojunction field-effect transistors. [61] Additionally,p hotovoltaic effects can be achieved in organic p-n heterojunctions.…”

Section: Organic Single-crystal P-n Heterojunctionsmentioning

confidence: 99%

The Emergence of Organic Single‐Crystal Electronics

2019

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Organic semiconducting single crystals are perfect for both fundamental and application‐oriented research due to the advantages of free grain boundaries, few defects, and minimal traps and impurities, as well as their low‐temperature processability, high flexibility, and low cost. Carrier mobilities of greater than 10 cm2 V−1 s−1 in some organic single crystals indicate a promising application in electronic devices. The progress made, including the molecular structures and fabrication technologies of organic single crystals, is introduced and organic single‐crystal electronic devices, including field‐effect transistors, phototransistors, p‐n heterojunctions, and circuits, are summarized. Organic two‐dimensional single crystals, cocrystals, and large single crystals, together with some potential applications, are introduced. A state‐of‐the‐art overview of organic single‐crystal electronics, with their challenges and prospects, is also provided.

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“…Micro/nanomaterials based on organic molecules have attracted increasing attentions owing to their unique optical and electronic properties, good processability, high reaction activity, and photoluminescence (PL) efficiency, which could lead to new applications in micro/nanoscale devices . However, although important roles the organic functional molecules have played in various optoelectronic devices, most of the relevant works have been focused on inorganic materials .…”

mentioning

confidence: 99%

Organic Functional Molecule‐Based Single‐Crystalline Nanowires for Optical Waveguides and Their Patterned Crystals

Zhang

Gao

et al. 2020

Advanced Optical Materials

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The deterministic manufacturing and patterning of high‐quality organic single crystal semiconductors are core opportunities and challenges for large‐scale integrated functional devices with high efficiency and high performance. As for the solution patterning for the fabrication of the organic semiconductors, various methods are reported to efficiently control the position, alignment, and size of organic structures. Nevertheless, the poor control of the dewetting dynamics of organic solution leads to the low crystallinity and disordered crystallographic orientation of as‐fabricated organic architectures, which can limit their device performance. Herein, by use of the micropillar‐structured template with asymmetric wettability, the patterned organic 1D single crystals with precise position and geometry, flat morphology, and high alignment can be constructed. Moreover, the nanowire arrays are demonstrated with active optical waveguiding. In addition, the other patterned architectures of circle, triangle, square, pentagon, and hexagon shapes can also be constituted by regulating the surface geometry of substrates. This work not only facilitates the fundamental understanding on the patterning and crystallization of organic architectures, but also contributes greatly to the development of large‐scale assembly technology for patterning micro/nanostructures.

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Preparation of Single‐Crystalline Heterojunctions for Organic Electronics

Cited by 86 publications

References 149 publications

Supramolecular‐Macrocycle‐Based Crystalline Organic Materials

Supramolecular‐Macrocycle‐Based Crystalline Organic Materials

The Emergence of Organic Single‐Crystal Electronics

Organic Functional Molecule‐Based Single‐Crystalline Nanowires for Optical Waveguides and Their Patterned Crystals

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