Physics · Semiconductor Physics
निम्नलिखित में से कौन सा अर्धचालक (semiconductor) एक प्रत्यक्ष बैंड-अंतराल (direct band-gap) सामग्री है जो एलईडी और सेमीकंडक्टर लेजर जैसे ऑप्टोइलेक्ट्रॉनिक अनुप्रयोगों के लिए उपयुक्त है?
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