Field Effect Studies on Rubrene and Impurities of Rubrene

Abstract

Rubrene single crystals have been grown by a vapor-phase process. Two additional compounds that contaminate rubrene have been identified and their structures determined. Single crystals of rubrene show excellent crystallinity and very small rocking curve width. Field effect transistors based on pure rubrene single crystals with colloidal graphite electrodes and Parylene as a dielectric demonstrate a maximal mobility of 13 cm 2 /Vs with strong anisotropy. The mobility increases very slightly with cooling, but decreases significantly at low temperatures.

Density functional theory study on electron and hole transport properties of organic pentacene derivatives with electron‐withdrawing substituent

“…[1][2][3][4] They have been widely investigated by various experimental and theoretical methods. [5][6][7][8][9] Their tremendous potential in the electronics process field arises from the advantages they bring in terms of cost and technological flexibility. Organic field effect transistor, organic light emitting diode, and organic solar cell are designed and applied based on charge transport properties of organic semiconductors.…”

“…The anisotropic mobility is an intrinsic characteristic of the material and could be effectively explored to develop high-mobility semiconductor. [3,8,15] More and more technical and academic studies of organic semiconductor materials have been carried out to develop high mobility electronic devices. [16][17][18][19] Bao and his coworkers have fabricated the high-performance single-crystal field-effect transistors with the synthesized organic semiconductors [1,2,20] and Shuai and his coworkers have systematically developed the theoretical models to simulate the charge transport in the organic conjugated systems.…”

Bulk electrical properties of rubrene single crystals: Measurements and analysis

“…Rubrene, a tetraphenyl derivative of tetracene, has shown to form high quality single crystals that present high mobility 1,2 due to a very low density of defects and impurity related traps 2 and to cofacial -stacking interaction in the b direction resulting in a very efficient electronic coupling. 3 This kind of organic solid is useful not only for device applications, but also for exploring the intrinsic properties of organic materials and investigating the upper limit of mobility in organic systems, since their characteristics are not affected by the imperfections of the film structure.…”

Self-assembly of Rubrene on Copper Surfaces

“…33,39 A hole mobility as high as 2.5 cm 2 /Vs has recently been achieved in rubrene thin film transistors. 40 The excellent charge transport properties of rubrene have motivated several fundamental studies of rubrene single crystals, [27][28][29][30][31][32][33][34][35][36][37][38][39][40][41][42] thin films, [43][44][45][46][47] and self-assembled structures. 28,[48][49][50] Rubrene is a nonplanar and flexible molecule consisting of a tetracene backbone with two pairs of phenyl substituents symmetrically attached on either side of the backbone ( Figure 1).…”