Bio21 Institute and School of Chemistry, University of Melbourne, Victoria 3010, Australia.
Nano Lett. 2012 Feb 8;12(2):949-54. doi: 10.1021/nl204010e. Epub 2012 Jan 24.
Room temperature single-photon emission and quantum characterization is reported for isolated defects in zinc oxide. The defects are observed in thin films of both in-house synthesized and commercial zinc oxide nanoparticles. Emission spectra in the red and infrared, second-order photon correlation functions, lifetime measurements, and photon count rates are presented. Both two- and three-state emitters are identified. Sub-band gap absorption and red emission suggest these defects are the zinc vacancy. These results identify a new source of single photons in a readily available wide band gap semiconductor material which has exceptional electrical, optical, and biocompatibility properties.
本文报道了在氧化锌中孤立缺陷的室温单光子发射和量子特性。这些缺陷在我们自己合成的和商业的氧化锌纳米粒子的薄膜中都有观察到。本文呈现了在红色和红外区域的发射光谱、二阶光子相关函数、寿命测量和光子计数率。鉴定出了两种和三种状态的发射器。亚带隙吸收和红色发射表明这些缺陷是锌空位。这些结果确定了一种新的单光子源，该单光子源来自一种易于获得的宽带隙半导体材料，这种材料具有优异的电学、光学和生物相容性。
