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A planar LED is fabricated from GaAs is having a optical power emitted is 0.018% of optical power generated internally which is 0.018% of optical power generated internally which is 0.6 P. Determine external power efficiency.

A planar LED is fabricated from GaAs is having a optical power emitted is 0.018% of optical power generated internally which is 0.018% of optical power generated internally which is 0.6 P. Determine external power efficiency. Correct Answer 0.9%

Optical power generated externally is given by ηcp = (0.018Pint/2Pint)*100 Where, Pint = power emitted ηcp = external power efficiency.

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