A new molecular architecture for molecular electronics.
A new molecular architecture for molecular electronics.
复制标题
分子电子学的新分子结构。
DOI：
10.1002/anie.201190076
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发表时间：
2011
影响因子：
--
通讯作者：
G. Abstreiter
中科院分区：
文献类型：
--
作者：
A. Cattani;Kung;A. Bora;Anschuma Pathak;M. Krautloher;B. Nickel;J. Schwartz;M. Tornow;G. Abstreiter
我们的目标是整合基础表面科学和
界面合成化学与新器件结构，
基于对器件物理的分析，
分子尺度晶体管及其应用
微电子器件分子电子学的前景
已经基于设计的器件中的有机薄膜，
研究到目前为止。有机薄膜晶体管（OTFT）
在这些器件中通常使用并五苯作为半导体;
基于并五苯的OTFT具有在1
cm2
/Vs和开关比在106和108之间[1]，
非晶硅晶体管的性能。有，
然而，基于并五苯的OTFT的主要缺点，包括
加工问题和晶界限制[2]亚阈值差
性能和大的正阈值电压。在
为了真正实现分子电子学的承诺，
有源器件是分子级的新器件，
必须设计出这样的结构，
结构是关键。我们建议创造新的分子
基于表面附着的有组织生长的
有机半导体纳米器件通过定向
双官能低聚芳烃和有机金属的规则堆积
复杂的连接体。我们的新架构消除了
通过超沉积并五苯或其他有机半导体
合成有序的，真正的分子器件，
设备物理学的概念，采用我们独特的方式来构建
芳烃的有序排列。
Our goal is to integrate fundamental surface science and
interface synthesis chemistry with novel device architecture that
is underpinned by an analysis of device physics to build nextgeneration
molecular scale transistors with application to
microelectronic devices. The promise of molecular electronics
has been based on organic thin films in devices devised and
studied so far. Organic thin film transistors (OTFTs) most
commonly use pentacene as the semiconductor in these devices;
pentacene-based OTFTs have carrier mobilities in the range of 1
cm2
/Vs and on-off ratios between 106 and 108 [1] which may rival
the performance of amorphous silicon transistors. There are,
however, major drawbacks of pentacene-based OTFTs, including
processing issues and grain boundary limitations[2] poor subthreshold
performance and large positive threshold voltages. In
order to truly realize the promise of molecular electronics, where
active devices are of the scale of molecules, new device
architectures must be devised where molecular control of the
structure is key. We propose to create new molecular
architectures based on organized growth of surface-attached
organic semiconductors on nanoscale devices through directed
regular stacking of bifunctional oligoarenes and organometallic
complex linkers. Our new architecture eliminates the need for
superdeposited pentacene or other organic semiconductors by
synthesizing ordered, truly molecular devices based on new
concepts of device physics that employ our unique ways to build
ordered arrays of aromatics.