Transport properties of single-component organic conductors, TED derivatives†,Molecular Systems Design & Engineering

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Transport properties of single-component organic conductors, TED derivatives†
Molecular Systems Design & Engineering ( IF 3.2 ) Pub Date : 2017-10-11 00:00:00 , DOI: 10.1039/c7me00029d
Yuka Kobayashi _{1,

2,

3,

4} , Jean-Baptiste Vaney _{2,

4,

5,

6} , Takao Mori _{2,

4,

5,

6} , Yoshitaka Matsushita _{2,

3,

4,

7} , Takeshi Terauchi _{1,

2,

3,

4} , Yoshihiko Takeda _{2,

4,

8,

9} , Shinjiro Yagyu _{2,

4,

5,

6}

Affiliation

Narrow-gap semiconductors with high conductivity and mobility are an important class of materials for various applications, especially for thermoelectric and optical device applications. Herein, we designed and synthesized novel organic narrow-gap semiconductors, which are modified forms of the main skeleton of a single-component pure organic metal, tetrathiafulvalene-extended dicarboxylate (TED). Molecular design of the TED derivatives with substituent groups on the skeleton led to highly-conducting semiconductors even when powder crystalline samples were used. Their thermopower is greater than that of metallic TED without a substituent group, demonstrating the successful tuning of carrier concentration in the TED system by molecular design. Near-/middle-infrared (IR) diffuse reflectance measurements revealed each band gap, and optical parameters extracted from the spectra evaluated the carrier concentration and mobility of the TED derivatives with fitting calculations on the basis of a Drude–Lorentz dielectric function.

中文翻译：

单组分有机导体，TED衍生物的传输性能†

具有高电导率和迁移率的窄间隙半导体是一类重要的材料，适用于各种应用，尤其是对于热电和光学设备应用。在这里，我们设计和合成了新颖的有机窄隙半导体，它们是单组分纯有机金属四硫富瓦烯-延伸的二羧酸盐（TED）的主要骨架的修饰形式。即使使用粉末晶体样品，在骨架上带有取代基的TED衍生物的分子设计也导致了高导电半导体。它们的热功率大于没有取代基的金属TED的热功率，表明通过分子设计成功地调节了TED系统中载流子的浓度。近/中红外（IR）漫反射率测量显示每个带隙，

更新日期：2017-10-11

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