Organic field effect transistors based on graphene and. Nanotechnology is an emerging technology for fabricating nanostructures where at least one dimension is smaller than 100 nm. A dft study on the electronic structures and conducting. Microscopic mechanisms behind the high mobility in rubrene. Electron transport in rubrene singlecrystal transistors satria zulkarnaen bisri,1,a taishi takenobu,1,2,b tetsuo takahashi,1 and yoshihiro iwasa1,3 1institute for materials research, tohoku university, sendai 9808577, japan 2precursory research for embryonic science and technology presto, japan science and technology agency, 35 sanbancho, chiyodaku, tokyo 1020075, japan. Pdf electron transport in rubrene singlecrystal transistors.
Electron transport in rubrene singlecrystal transistors aip publishing. Electron transport in rubrene singlecrystal transistors satria zulkarnaen bisri,1,a taishi takenobu,1,2,b tetsuo takahashi,1 and yoshihiro iwasa1,3 1institute for materials research, tohoku. Pdifcn 2 single crystals were usually fabricated by laminating thin electron transport in rubrene singlecrystal transistors satria zulkarnaen bisri,1,a taishi takenobu,1,2,b tetsuo takahashi,1 and yoshihiro iwasa1,3 1institute for materials research, tohoku university, sendai 9808577, japan 2precursory research for embryonic science and technology presto, japan science and technology agency, 35 sanbancho, chiyodaku, tokyo 1020075, japan. Compared with organic thin film transistors otfts, organic single crystal transistors oscts can be used to study the intrinsic electronic transport properties of organic semiconductor and physical limitations on the performance of organic fieldeffect transistors ofets. This paper explains how singlecrystal organic transistors of channel length down to just 7 nm can be fabricated without damaging the organic material.
Highmobility transistors based on single crystals of. Single crystals of c 60, rubrene, and pentacene have been chosen in our structures, but the same process can be used. In particular, we explore the effect of the free, permanent dipoles in pfpe on the charge carrier accumulation and transport at the rubrenepfpe interface. Electron spin resonance study of organic interfaces in ion gelgated rubrene singlecrystal transistors yuki takahashi 1, masaki tsuji, yohei yomogida 2, taishi takenobu, yoshihiro iwasa3. The actual electronic band structure of a rubrene single crystal. Pdf highmobility transistors based on single crystals of. Perylenediimide molecules with cyano functionalization.
Exploiting free dipoles to induce charge carriers at organic surfaces, the journal of physical chemistry c, 121, 12, 6540, 2017. A highmobility electrontransporting polymer for printed transistors. Although device architecture has yet to be fully optimized, maximum hole electron mobilities of 1. Right rubrene singlecrystal structure, as determined by x ray. Influence of the gate dielectric on the mobility of rubrene singlecrystal fieldeffect transistors a. Singlecrystal organic chargetransfer interfaces probed. Multiple purification process of the single crystals. A schematic of the rubrene ofets studied here is displayed in the inset of fig. The holeelectron mobility ratio obtained is in good agreement with the reported theoretical calculation. As a prototypical organic semiconductor material, rubrene and its derivatives have attracted considerable attention due to their exemplary fieldeffect transistor properties 1 5. Xinglong ren, elliot schmidt, jeff walter, koustav ganguly, chris leighton and c. Clearly observed fiesr signals exhibit extremely narrow linewidths owing to the very high carrier. A significant improvement of electron carrier mobility up to 0. Light quasiparticles dominate electronic transport in.
Note that, during this transfer process, the channel surface of the rubrene single crystal was untouched. Organic singlecrystal fieldeffect transistors sciencedirect. The ones marked may be different from the article in the profile. A rubrene single crystal, for the active material of an organic.
Spectral and transport properties of small molecule singlecrystal organic semiconductors have been theoretically analyzed focusing on oligoacenes, in particular on the series from naphthalene to rubrene and pentacene, aiming to show that the inclusion of different electronphonon couplings is of paramount importance to interpret accurately the properties of prototype organic semiconductors. Correlation between crystal structure and mobility in organic field. Tcnq family as a paradigm to investigate the fundamental aspects of electronic transport in organic. The best organic semiconductor known is single crystal rubrene c. Highperformance organic singlecrystal transistors on. Using a modified synthetic route for protonated rubrene h rubrene, c42h28, we have obtained multigram quantities of rubrene with deuterium incorporation approaching 100%. Rubrene singlecrystal transistors with perfluoropolyether. Introduction charge transport in organic molecular semiconductors is. Organic fieldeffect transistors using single crystals. Here, organic singlecrystal fieldeffect transistors based on materials related to dtttf. The hole electron mobility ratio obtained is in good agreement with the reported theoretical calculation. Morphology and fluorescence spectra of rubrene single. Charge carrier transport in singlecrystal organic fieldeffect. Furthermore, the highest fieldeffect mobilities of holes 22 cm2 v1 s1 and electrons 5.
A new electrode design for ambipolar injection in organic. Then, a hbn flake on pdms stamp was transferred onto the channel area of the rubrene single crystal using a threeaxis micromanipulator. A highmobility electrontransporting polymer for printed. Singlecrystal rubrene fets investigated in ambient conditions have shown no ntype transport. Kavli institute of nanoscience, delft university of technology, lorentzweg 1, 2628 cj delft, the netherlands.
Electron transport in rubrene singlecrystal transistors by satria zulkarnaen bisri, taishi takenobu, tetsuo takahashi and yoshihiro iwasa no static citation data no static citation data cite. Figure 2a shows the electrical characteristics of a conventional transistor containing a thin, electrostatically bonded rubrene single crystal. Especially, roomtemperature hole mobilities on the order of 15 cm 2 v. Highspeed organic singlecrystal transistors gated with. Structural information on the surface or the interface is especially important, because the transport properties of organic material are closely related to the structure. Podzorov2 1kavli institute of nanoscience delft, delft university of technology, lorentzweg 1, 2628 cj delft, the netherlands 2department of physics and astronomy, rutgers university, piscataway, new jersey 08854, usa. Charge transport in organic crystals is often handled by two simpli. In these devices, source and drain graphite or silver paint contacts were prepared on the. Optical and transport properties of single crystal rubrene. As for most of organic crystals, electronic transport in rubrene is highly anisotropic. Singlecrystal fieldeffect transistors were fabricated for 57, and these derivatives show ambipolar transport as predicted. Daniel frisbie, rubrene singlecrystal transistors with perfluoropolyether liquid dielectric. Pdf we have performed a comprehensive study of chemical synthesis, crystal growth, crystal quality, and electrical transport properties of.
This cited by count includes citations to the following articles in scholar. The microscopic mechanisms behind the very high mobility in rubrene singlecrystal transistors achieved by interface treatments with selfassembled monolayers sams have been clarified by using fieldinduced electron spin resonance fiesr. Strategies for fabricating nanogap singlecrystal organic. Therefore, the research of oscts has attracted much attention in recent years. Electron transport in rubrene singlecrystal transistors. Light quasiparticles dominate electronic transport in molecular crystal fieldeffect transistors.
The effects of different electronphonon couplings on the. We have performed a comprehensive study of chemical synthesis, crystal growth, crystal quality, and electrical transport properties of isotopically substituted rubrene d28 single crystals d rubrene, c42d28. Shortchannel and highmobility p and ntype organic singlecrystal transistors with airgap structures volume 1402 m. The fieldeffect transistor fet has served as a versatile tool for electrical. Influence of the gate dielectric on the mobility of. A significant improvement of electron carrier mobility up. First, as single crystal rubrene displays the best electronic and optoelectronic properties of any osc, with charge carrier mobility reaching up to 20 cm 2 v. Vapor growth of single crystals is generally carried out by the physical vapor transport method.1199 1111 190 811 1433 516 434 414 784 1099 463 162 924 1504 126 192 371 1344 392 856 1367 731 307 1538 1531 1177 397 1499 95 346 348 855 1032 278 1045 918 1097 1417 202 866 66 914 1440 716 1274