Question
Download Solution PDFPN जंक्शन डायोड जो ____ सक्रिय झाल्यावर त्याला a/an _______ म्हणतात.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFयोग्य उत्तर पर्याय 4 आहे.
प्रकाश उत्सर्जक डायोड (LED)
- हा एक PN जंक्शन डायोड आहे जो जेव्हा अग्रेषित-पक्षपाती असतो तेव्हा प्रकाश उत्सर्जित करतो.
- जेव्हा प्रकाश-उत्सर्जक डायोडमधून फॉरवर्ड विद्युतप्रवाह जातो तेव्हा वाहक (इलेक्ट्रॉन आणि छिद्र) हलतात.
- p-प्रकार प्रदेशातील छिद्रे n-प्रकार प्रदेशात जातात आणि n-प्रकार प्रदेशातील इलेक्ट्रॉन p-प्रकार प्रदेशात जातात.
- इंजेक्ट केलेले वाहक पुन्हा एकत्र होतात, आणि पुनर्संयोजनापूर्वी आणि नंतर ऊर्जा फरक प्रकाश म्हणून सोडला जातो.
- अर्धवाहकाचे बँड गॅप ओलांडण्यासाठी इलेक्ट्रॉनला लागणार्‍या ऊर्जेवरून प्रकाशाचा रंग ठरवला जातो.
Last updated on Jul 19, 2025
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