Recent content by LotsEp

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    Graduate What is the biggest challenge to improve white LEDs?

    Here are some of my thoughts: - thermal management of individual LEDs in a RBG system - photon absorption in phosphor coating - exponential decay in intensity - CCT/ CRT?
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    Graduate Which plane of GaN gives an image of dots placed hexagonally

    Along which direction in a wurtzite crystal is that? Sorry I am very new to the field...
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    Graduate Which plane of GaN gives an image of dots placed hexagonally

    I have been given a handout with the question and this photo. The type of electron microscope is not specified either. This is as much information as I have. How much can we deduce from this image?
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    Graduate Which plane of GaN gives an image of dots placed hexagonally

    An electron microscope image of GaN seen in projection shows white dots which correspond to columns of gallium atoms observed in projection. The dots show a hexagonal pattern but there is not a dot in the centre of each hexagonal. No nitrogen atoms are seen in the image. Which plane of this...