Blue-light emission at room temperature from Ar+-irradiated SrTiO3
Blue-light emission at room temperature from Ar+-irradiated SrTiO3
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DOI：
10.1038/nmat1498
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发表时间：
2005-11-01
期刊：
影响因子：
41.2
通讯作者：
Takano, M
中科院分区：
文献类型：
--
作者：
Kan, DS;Terashima, T;Takano, M
与传统半导体制造的电子设备不同，基于氧化物的电子设备有望具有令人着迷的特性。SrTiO3（STO）是这一电子新领域的关键材料，，，，，，，，，，。本文报道了Ar+辐照金属STO在室温下的蓝光发射。辐照在距晶体表面约20nm深度处引入缺氧。这些缺陷产生导电载流子，并在自困状态下稳定空穴能级。我们提出了一个模型，通过该模型，掺杂的传导电子和隙内态产生辐射过程，导致蓝光发射。利用传统的显微制造技术，可以将发射区域制作成任何尺寸和形状。
Oxide-based electronic devices are expected to have fascinating properties, unlike those made from conventional semiconductors. SrTiO3(STO) is a key material for this new field of electronics,,,,,,,,,,. Here we report on blue-light emission at room temperature from Ar+-irradiated, metallic STO. The irradiation introduces oxygen deficiencies to a depth of ∼20 nm from the crystal surface. These deficiencies generate conduction carriers and stabilize a hole level in a self-trapped state. We propose a model by which the doped conduction electrons and the in-gap state produce a radiative process that results in blue-light emission. The emitting region can be patterned into any size and shape with conventional microscopic fabrication techniques.