Maximum detectable wavelength of a photoresistor

[Rula]

to increase maximum detectable wavelength of a photoresistor which is equal to
planck's constant/ semiconductor energy gap , we need to decrease the energy gap only

planck's constant cannot be increased or decreased, right?

 

[Dr Lots-o'watts]

Planck's constant can be considered just as constant as pi is.

 

[Rula]

thanks for your help ,

Best Regards