Question
Download Solution PDFGaAsP से बनी P-N संधि से उत्सर्जित प्रकाश का रंग ______ होता है।
This question was previously asked in
KVS TGT WET (Work Experience Teacher) 8 Jan 2017 Official Paper
Answer (Detailed Solution Below)
Option 1 : लाल या पीला
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Download Solution PDFLED : प्रकाश उत्सर्जक डायोड
विशेष डायोड जो अग्रदिशिक बायस वोल्टता के आधार पर रंग उत्सर्जित करता है.
रंगों के साथ LED :
| अर्धचालक पदार्थ | तरंगदैर्ध्य | रंग |
| GaAs | 850 -950 nm | अवरक्त |
| GaAsP | 630-660 nm | लाल |
| GaAsP:N | 605-620 nm | पीला |
| AlGaP | 550-570 nm | हरा |
| SiC | 430-505 nm | नीला |
अतः सही विकल्प "1" है ।
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