Band-Like Carrier Transport at the Single-Crystal Contact Interfaces between 2,5-Difluoro-7,7,8,8-tetracyanoquinodimethane and Electron Donors,The Journal of Physical Chemistry Letters

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Band-Like Carrier Transport at the Single-Crystal Contact Interfaces between 2,5-Difluoro-7,7,8,8-tetracyanoquinodimethane and Electron Donors
The Journal of Physical Chemistry Letters ( IF 4.8 ) Pub Date : 2018-01-11 00:00:00 , DOI: 10.1021/acs.jpclett.7b03053
Takuro Shimada ₁ , Yukihiro Takahashi _{1,

2} , Jun Harada _{1,

2} , Hiroyuki Hasegawa ₃ , Tamotsu Inabe _{1,

2}

Affiliation

Some heterojunction interfaces formed with molecular solids show metal-like transport behavior. In order to clarify the requirement, interfaces are fabricated by lamination of single-crystal electron-accepting 2,5-difluoro-7,7,8,8-tetracyanoquinodimethane (F₂TCNQ) and electron-donating molecules with a wide range of ionization potentials. Carrier injection between the acceptor and donor crystals leads to highly conducting interfaces, some of which exhibited band-like charge transport behaviors. Combinations with weak donors also resulted in interfaces with band-like transport properties. Accordingly, band-like conduction was achieved for interfaces where the donor and acceptor crystals do not have well-matched band energies. The results indicate that the wide range of candidates have great potential for modification of the electronic structure of organic crystals. The present method is expected to enable control of the electronic properties of the interface.

中文翻译：

2,5-二氟-7,7,8,8-四氰基喹二甲烷与电子给体之间单晶接触界面处的带状载流子传输

与分子固体形成的某些异质结界面显示出类似金属的传输行为。为了明确要求，通过单晶接受电子的2,5-二氟-7,7,8,8-四氰基喹二甲烷（F _2）的层压来制造界面。TCNQ）和具有广泛电离电势的给电子分子。受体和施主晶体之间的载流子注入导致高导电界面，其中一些界面表现出带状电荷传输行为。与弱供体的结合也导致具有带状传输性质的界面。因此，对于供体和受体晶体不具有良好匹配的带能的界面实现了带状传导。结果表明，广泛的候选物具有修饰有机晶体的电子结构的巨大潜力。期望本方法能够控制界面的电子性质。

更新日期：2018-01-11

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