Question: Please answer in 30 mins please (b) In a LED design, a semiconductor Fe2O3 and WO is applied to produce light. From Table 4.1 and

Please answer in 30 mins please

Please answer in 30 mins please (b) In a LED design, a

(b) In a LED design, a semiconductor Fe2O3 and WO is applied to produce light. From Table 4.1 and Table 4.2, perform a search to find out what colour of light is produced Dalam reka bentuk LED, semikonduktor Fe30dan WO, digunakan untuk menghasilkan cahaya. Daripada Jadual 4.1 dan Jadual 4.2. lakukan carian untuk mengetahui warna cahaya yang dihasilkan (7 Marks/ Markah) Table 4.1 Jadual 4.11 Semiconductor Semikonduktor Fe20 CdS WO, TiO (rutile) TiO2 (anatase) Zno SnO2 Band Gap (eV) Sela Jalur (el)/ 23 25 2.8 3.0 3.2 3.2 3.5 Semiconductor Semikonduktor CdSe 2-CAN Cuzo V205 CeO2 Zns Sic Band Gap (eV) Sela Jalur (1) 1.7 2.7 2.2 2.4 2.94 3.6 3.0 inila Table 4.2 Jadual 4.21 Colour Warna) Violet Blue Green Yellow Orange Red Wavelength (nm) Panjang gelombang (nm) 380 - 450 450-495 495-570 570-590 590-620 620 - 750 7

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