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Do you mean"can you 'roast one'?"?Most semiconductor devices can operate at 100C+.The sensitivity could be altered if you changed the operating temperature significantly but the totally energy absorbed per m squ is a lot less than 1kW on the Earth's surface. Not a serious prob, I think.If you want to "regulate" how much is absorbed, you'd have to use a nice little sunshade or sunnink.Mwaah
That looks like a photo-resistor, so while it would be unlikely to break due to the light being too bright, putting too high a PD across it, or drawing too much current through it might damage it. Both scenarios would be unlikely in practice though.
That light sensor does, indeed, look like a photoresistor and they are fairly robust. Photodiodes are pertty well able to look after themselves too. But if you expose a photomultiplier to anything like normal light levels while it is switched on you will kill it. On the other hand, they do let you count photons one at a time.http://en.wikipedia.org/wiki/Photomultiplier
Look here's one :[attachment=8664]