Why an elemental semiconductor cannot be used to make visible LEDs? Share with your friends Share 0 Tanay Gupta answered this Bcs LED is made from heavily doped semiconductor to work in biased conditions -14 View Full Answer Kj answered this Because the energy released by combination of holes and electrons in elemental semiconductors does not lie in the visible spectrum. 11 Harsimar Saggu answered this because their energy gap lies in infrared region 6 Shubh answered this becoz for visible leds there must be minimum of 1.8 ev is required and elemental semiconductor does not lie in this region 3
