Tuning of Electrical Conductivity by Photoirradiation and Electric Fields
Tuning of Electrical Conductivity by Photoirradiation and Electric Fields
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DOI：
10.1021/jp4126123
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发表时间：
2014-02
影响因子：
3.7
通讯作者：
Toshifumi Iimori;N. Ohta
中科院分区：
文献类型：
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作者：
Toshifumi Iimori;N. Ohta
由于潜在的光电材料的发现前景，利用光、电场等外界刺激来控制电导率是材料科学的主要研究课题之一。晶体材料的光激发可以通过电子激发态的非辐射弛豫过程引起电子态的变化和振动运动的激发。因此，晶体材料的物相和物性随光照射的变化是可以预料的。电场的应用也已知能够控制载流子浓度并改变材料中的电子态。此外，由于协同效应，这些外部刺激的同时应用有望促进前所未有的光电功能的揭示。作为探索利用外界刺激进行控制的靶点，显示出金属导电性的晶体分子电荷转移络合物具有很强的导电性。
Control of electrical conductivity by using external stimuli such as photoirradiation and electric fields is one of the major subjects in materials science because of prospects for the discovery of potential optoelectronic materials. Photoexcitation of crystalline materials can lead to the change of the electronic states and the excitation of vibrational motions via the nonradiative relaxation process from the electronically excited states. Thus, the change of phases and physical properties of crystalline materials is expected with photoirradiation. The application of electric fields is also known to be able to control carrier concentration and modify electronic states in materials. Moreover, the concurrent application of these external stimuli is expected to advance for unprecedented optoelectronic functions to be revealed due to synergy effects. As a target in the exploration of the control using external stimuli, the crystalline molecular charge-transfer complex which shows metallic conductivity, that ...