(d) EL intensity versus time relation when a voltage applied to NW gate is switched between 0 and +4V for a fixed bias of -6V. NW smart pixels, (a) Schematic of an integrated crossed NW FET and LED and the equivalent circuit, (b) Shows SEM image of a representative device, (c) Plots of current and emission intensity of the nanoLED as a function of voltage apphed to the NW gate at a fixed bias of -6V. The CCD chip has 1024 x 1024 pixels each of which stores an electrical charge proportional to the number of. The screen is coupled to a tapered fiber optics bundle which is then coupled to a one inch by one inch square CCD chip. The SMART detector consists of a flat 6-cm circular phosphorescent screen that converts x-ray photons to visible light photons. A charge coupled device (CCD) is used as the area detector on the Siemens SMART single crystal diffractometer system. The crystal must be oriented in many different settings with respect to the incident beam but the detector needs to be positioned at only a few positions to collect all of the data. An x-ray area detector can be used to collect the intensities of many reflections at a time.
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