Abstract
Organic light emitting polymer F8BT blends has been integrated onto the blue LED for the purpose of fabricating color transferring from blue to green. The transparent PMMA would play a big role to prevent the polymer chain from conjugating which may result in the lower conversion efficiency. Encapsulate the LED chip by epoxy would enhance the maximum conversion efficiency from 3% to around 20% and the red shift of peak wavelength may be eased compared with non-encapsulated one owing to the modification of heat and moisture.
© 2011 AOS
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