Gap Band
Gap Band
How to determine the band gap?
Hi,
A common light-emitting diode is made from a combination of gallium, arsenic, and phosphorus (GaAsP) and emits red light at 650 nm.
What is its band gap?
Could you please show working.
Thanks 
The bandgap is roughly the energy of the photon that the material emits. In this case, the bandgap is
Band Gap = hc/lambda = (6.62E-34)(3E8) / 650E-9
use your calculator. The answer is in joules, to convert to eVs, divide this by 1.6E-19.
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GAP BAND - Party Train
