Polymer assisted transferring of patterned electrodes for a weak anisotropic charge transport study in monolayer molecular crystals

Zhao, Xiaotong1,2,3; Liu, Jie3,4; Li, Haiyang3; Zhang, Jiajun5; Li, Chunlei3; Dong, Yicai3; Shi, Xiaosong3; Sun, Yanan3; Liu, Ji5; Lei, Ming1,2; Jiang, Lang3

2022-07-01

10.1039/d2tc01660e

Journal of Materials Chemistry C   Impact Factor & Quartile

2050-7526

2050-7534

Monolayer molecular crystals (MMCs) have attracted worldwide research interest due to their unique properties toward their bulk counterparts. The lower contact resistance of MMCs over their bulk counterparts makes them ideal carriers for studying the intrinsic properties of organic semiconductors. Anisotropic charge transport is an important characteristic of organic single crystals and also one of the primary factors induced in device performance fluctuation; however, related studies based on MMCs are still rare. MMC materials with a weak charge transport anisotropic property would be urgently needed and is of great significance for realizing high performance device arrays with low device-to-device variation. The major difficulty regarding anisotropic charge transport study in MMCs lies in the non-destructive preparation of electrodes on MMCs. Here, by taking advantage of the varied adhesion forces between substrates/gold electrodes/polymer films, the prepatterned fan-shaped electrodes could be readily transferred to target MMCs for the anisotropy study. By this non-destructive dry transferring of top electrodes, anisotropic charge transport properties of typical 2,6-bis(4-hexylphenyl) anthracene (C6-DPA) and 1,4-bis((5 '-hexyl-2,2 '-bithiophen-5-yl)ethynyl)benzene (HTEB) MMCs were obtained with an anisotropic ratio of 1.15 and 2.15, respectively. The low anisotropic ratio of C6-DPA would facilitate the future applications in MMC OFET arrays without considering the influence of crystal orientation.

SCI ; EI

English

Others

National Key R&D Program of China[2021YFB3200701] ; National Natural Science Foundation of China["21873108","22075295","U21A20497"] ; Strategic Priority Research Program of Sciences[XDB30000000]

Materials Science ; Physics

Materials Science, Multidisciplinary ; Physics, Applied

WOS:000830400900001

ROYAL SOC CHEMISTRY

20223212540027

Anisotropy ; Carrier transport ; Crystal orientation ; Electrodes ; Molecular crystals ; Molecular orientation ; Single crystals

Electricity: Basic Concepts and Phenomena:701.1 ; Mechanics:931.1 ; Physical Properties of Gases, Liquids and Solids:931.2 ; Crystalline Solids:933.1 ; Crystal Lattice:933.1.1 ; Electronic Structure of Solids:933.3

Web of Science

1.Beijing Univ Posts & Telecommun, State Key Lab Informat Photon & Opt Commun, Beijing 100876, Peoples R China
2.Beijing Univ Posts & Telecommun, Sch Sci, Beijing 100876, Peoples R China
3.Chinese Acad Sci, Inst Chem, Key Lab Organ Solids, Beijing 100190, Peoples R China
4.Tianjin Univ Technol, Sch Chem & Chem Engn, Life & Hlth Res Inst, Tianjin 300384, Peoples R China
5.Southern Univ Sci & Technol, Dept Mech & Energy Engn, Shenzhen 518055, Peoples R China

Zhao, Xiaotong,Liu, Jie,Li, Haiyang,et al. Polymer assisted transferring of patterned electrodes for a weak anisotropic charge transport study in monolayer molecular crystals[J]. Journal of Materials Chemistry C,2022,10:10799-10804.

Zhao, Xiaotong.,Liu, Jie.,Li, Haiyang.,Zhang, Jiajun.,Li, Chunlei.,...&Jiang, Lang.(2022).Polymer assisted transferring of patterned electrodes for a weak anisotropic charge transport study in monolayer molecular crystals.Journal of Materials Chemistry C,10,10799-10804.

Zhao, Xiaotong,et al."Polymer assisted transferring of patterned electrodes for a weak anisotropic charge transport study in monolayer molecular crystals".Journal of Materials Chemistry C 10(2022):10799-10804.