Abstract: Multi-chromatic photoluminescent, oxide-capped semiconductor nanocrystals and methods for forming such semiconductor nanocrystals. The method includes exposing one or more oxide-capped semiconductors, preferably type IV semiconductor nanocrystals, to electron beam radiation, wherein the radiation has an energy between 1 and 30 keV, the radiation introducing color centers in the oxide that exhibit photoluminescence in at least the green band of the visible spectrum.

Abstract: In one aspect, a cathodoluminescence (CL) spectroscopic tomography device includes a sample stage to support a sample. An electron beam source scans an electron beam over the sample to yield light emission by the sample. A reflective element directs the light emission by the sample to a light detector. A controller controls operation of the sample stage, the electron beam source, and the light detector. In one aspect, a CL spectroscopic tomography device includes an electron beam source which directs an electron beam at an object to yield an emission by the object. A detector detects the emission. A controller receives information from the detector related to the detected emission. The controller derives a two-dimensional (2D) CL map from the information related to the detected emission, and derives a three-dimensional (3D) CL tomogram from the 2D CL map.

Abstract: Multi-chromatic photoluminescent, oxide-capped semiconductor nanocrystals and methods for forming such semiconductor nanocrystals. The method includes exposing one or more oxide-capped semiconductors, preferably type IV semiconductor nanocrystals, to electron beam radiation, wherein the radiation has an energy between 1 and 30 keV, the radiation introducing color centers in the oxide that exhibit photoluminescence in at least the green band of the visible spectrum.

Abstract: In one aspect, a cathodoluminescence (CL) spectroscopic tomography device includes a sample stage to support a sample. An electron beam source scans an electron beam over the sample to yield light emission by the sample. A reflective element directs the light emission by the sample to a light detector. A controller controls operation of the sample stage, the electron beam source, and the light detector. In one aspect, stage a CL spectroscopic tomography device includes an electron beam source which directs an electron beam at an object to yield an emission by the object. A detector detects the emission. A controller receives information from the detector related to the detected emission. The controller derives a two-dimensional (2D) CL map from the information related to the detected emission, and derives a three-dimensional (3D) CL tomogram from the 2D CL map.