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Home > Science > Physics   »   LDR made

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Old May 12, 2008, 08:54 AM
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LDR made
Is LDR as a semiconductor device?

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Old May 12, 2008, 09:01 AM   #2  
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Yup, semiconductors are perfect for this kind of application.
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Old May 12, 2008, 09:07 AM   #3  
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Is that made Intrinsic semiconductors or extrinsic (Impure) semiconductor?
I thing Intrinsic semiconductors.
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Old May 12, 2008, 09:36 AM   #4  
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Either will do the job. Extrinsic semiconductors will generally have a lower bandgap, and so will respond to light of a lower energy. Whereas intrinsic semiconductors will not respond until the photons reach a specific energy to excite electrons across the bandgap.
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Old May 12, 2008, 10:09 AM   #5  
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Thanks
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